118 guides · country formats · QA checklists
Address Guides & Blog
Practical address guides for developers, designers, shoppers, and anyone filling out a form. Each article has a worked example, the mistakes to avoid, and a tool that does the job.
Country guides
38 guidesUnited States Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct United States address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesCanada Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Canada address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesUnited Kingdom Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct United Kingdom address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesAustralia Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Australia address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesGermany Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Germany address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesFrance Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct France address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesJapan Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Japan address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesChina Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct China address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesHong Kong Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Hong Kong address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesTaiwan Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Taiwan address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesSingapore Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Singapore address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesSouth Korea Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct South Korea address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesIndia Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct India address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesBrazil Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Brazil address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesMexico Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Mexico address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesItaly Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Italy address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesSpain Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Spain address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesNetherlands Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Netherlands address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesSweden Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Sweden address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesNorway Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Norway address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesDenmark Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Denmark address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesFinland Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Finland address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesSwitzerland Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Switzerland address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesAustria Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Austria address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesBelgium Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Belgium address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesIreland Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Ireland address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesNew Zealand Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct New Zealand address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesUnited Arab Emirates Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct United Arab Emirates address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesSaudi Arabia Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Saudi Arabia address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesIsrael Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Israel address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesRussia Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Russia address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesMalaysia Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Malaysia address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesThailand Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Thailand address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesPhilippines Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Philippines address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesArgentina Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Argentina address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesTurkey Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Turkey address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesVietnam Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Vietnam address example, and a generator with copy and CSV/JSON export.
· 5 min readCountry guidesNigeria Address Format (2026) — Fields & Examples
The field order, postal-code rules, a correct Nigeria address example, and a generator with copy and CSV/JSON export.
· 5 min readUS state guides
50 guidesAlabama Address Format (2026) — How to Write a Alabama Address
How to write a Alabama address: street, city, state code, and ZIP, with a Alabama example, city links, and a pre-filtered generator.
· 4 min readUS state guidesAlaska Address Format (2026) — How to Write a Alaska Address
How to write a Alaska address: street, city, state code, and ZIP, with a Alaska example, city links, and a pre-filtered generator.
· 4 min readUS state guidesArizona Address Format (2026) — How to Write a Arizona Address
How to write a Arizona address: street, city, state code, and ZIP, with a Arizona example, city links, and a pre-filtered generator.
· 4 min readUS state guidesArkansas Address Format (2026) — How to Write a Arkansas Address
How to write a Arkansas address: street, city, state code, and ZIP, with a Arkansas example, city links, and a pre-filtered generator.
· 4 min readUS state guidesCalifornia Address Format (2026) — How to Write a California Address
How to write a California address: street, city, state code, and ZIP, with a California example, city links, and a pre-filtered generator.
· 4 min readUS state guidesColorado Address Format (2026) — How to Write a Colorado Address
How to write a Colorado address: street, city, state code, and ZIP, with a Colorado example, city links, and a pre-filtered generator.
· 4 min readUS state guidesConnecticut Address Format (2026) — How to Write a Connecticut Address
How to write a Connecticut address: street, city, state code, and ZIP, with a Connecticut example, city links, and a pre-filtered generator.
· 4 min readUS state guidesDelaware Address Format (2026) — How to Write a Delaware Address
How to write a Delaware address: street, city, state code, and ZIP, with a Delaware example, city links, and a pre-filtered generator.
· 4 min readUS state guidesFlorida Address Format (2026) — How to Write a Florida Address
How to write a Florida address: street, city, state code, and ZIP, with a Florida example, city links, and a pre-filtered generator.
· 4 min readUS state guidesGeorgia Address Format (2026) — How to Write a Georgia Address
How to write a Georgia address: street, city, state code, and ZIP, with a Georgia example, city links, and a pre-filtered generator.
· 4 min readUS state guidesHawaii Address Format (2026) — How to Write a Hawaii Address
How to write a Hawaii address: street, city, state code, and ZIP, with a Hawaii example, city links, and a pre-filtered generator.
· 4 min readUS state guidesIdaho Address Format (2026) — How to Write a Idaho Address
How to write a Idaho address: street, city, state code, and ZIP, with a Idaho example, city links, and a pre-filtered generator.
· 4 min readUS state guidesIllinois Address Format (2026) — How to Write a Illinois Address
How to write a Illinois address: street, city, state code, and ZIP, with a Illinois example, city links, and a pre-filtered generator.
· 4 min readUS state guidesIndiana Address Format (2026) — How to Write a Indiana Address
How to write a Indiana address: street, city, state code, and ZIP, with a Indiana example, city links, and a pre-filtered generator.
· 4 min readUS state guidesIowa Address Format (2026) — How to Write a Iowa Address
How to write a Iowa address: street, city, state code, and ZIP, with a Iowa example, city links, and a pre-filtered generator.
· 4 min readUS state guidesKansas Address Format (2026) — How to Write a Kansas Address
How to write a Kansas address: street, city, state code, and ZIP, with a Kansas example, city links, and a pre-filtered generator.
· 4 min readUS state guidesKentucky Address Format (2026) — How to Write a Kentucky Address
How to write a Kentucky address: street, city, state code, and ZIP, with a Kentucky example, city links, and a pre-filtered generator.
· 4 min readUS state guidesLouisiana Address Format (2026) — How to Write a Louisiana Address
How to write a Louisiana address: street, city, state code, and ZIP, with a Louisiana example, city links, and a pre-filtered generator.
· 4 min readUS state guidesMaine Address Format (2026) — How to Write a Maine Address
How to write a Maine address: street, city, state code, and ZIP, with a Maine example, city links, and a pre-filtered generator.
· 4 min readUS state guidesMaryland Address Format (2026) — How to Write a Maryland Address
How to write a Maryland address: street, city, state code, and ZIP, with a Maryland example, city links, and a pre-filtered generator.
· 4 min readUS state guidesMassachusetts Address Format (2026) — How to Write a Massachusetts Address
How to write a Massachusetts address: street, city, state code, and ZIP, with a Massachusetts example, city links, and a pre-filtered generator.
· 4 min readUS state guidesMichigan Address Format (2026) — How to Write a Michigan Address
How to write a Michigan address: street, city, state code, and ZIP, with a Michigan example, city links, and a pre-filtered generator.
· 4 min readUS state guidesMinnesota Address Format (2026) — How to Write a Minnesota Address
How to write a Minnesota address: street, city, state code, and ZIP, with a Minnesota example, city links, and a pre-filtered generator.
· 4 min readUS state guidesMississippi Address Format (2026) — How to Write a Mississippi Address
How to write a Mississippi address: street, city, state code, and ZIP, with a Mississippi example, city links, and a pre-filtered generator.
· 4 min readUS state guidesMissouri Address Format (2026) — How to Write a Missouri Address
How to write a Missouri address: street, city, state code, and ZIP, with a Missouri example, city links, and a pre-filtered generator.
· 4 min readUS state guidesMontana Address Format (2026) — How to Write a Montana Address
How to write a Montana address: street, city, state code, and ZIP, with a Montana example, city links, and a pre-filtered generator.
· 4 min readUS state guidesNebraska Address Format (2026) — How to Write a Nebraska Address
How to write a Nebraska address: street, city, state code, and ZIP, with a Nebraska example, city links, and a pre-filtered generator.
· 4 min readUS state guidesNevada Address Format (2026) — How to Write a Nevada Address
How to write a Nevada address: street, city, state code, and ZIP, with a Nevada example, city links, and a pre-filtered generator.
· 4 min readUS state guidesNew Hampshire Address Format (2026) — How to Write a New Hampshire Address
How to write a New Hampshire address: street, city, state code, and ZIP, with a New Hampshire example, city links, and a pre-filtered generator.
· 4 min readUS state guidesNew Jersey Address Format (2026) — How to Write a New Jersey Address
How to write a New Jersey address: street, city, state code, and ZIP, with a New Jersey example, city links, and a pre-filtered generator.
· 4 min readUS state guidesNew Mexico Address Format (2026) — How to Write a New Mexico Address
How to write a New Mexico address: street, city, state code, and ZIP, with a New Mexico example, city links, and a pre-filtered generator.
· 4 min readUS state guidesNew York Address Format (2026) — How to Write a New York Address
How to write a New York address: street, city, state code, and ZIP, with a New York example, city links, and a pre-filtered generator.
· 4 min readUS state guidesNorth Carolina Address Format (2026) — How to Write a North Carolina Address
How to write a North Carolina address: street, city, state code, and ZIP, with a North Carolina example, city links, and a pre-filtered generator.
· 4 min readUS state guidesNorth Dakota Address Format (2026) — How to Write a North Dakota Address
How to write a North Dakota address: street, city, state code, and ZIP, with a North Dakota example, city links, and a pre-filtered generator.
· 4 min readUS state guidesOhio Address Format (2026) — How to Write a Ohio Address
How to write a Ohio address: street, city, state code, and ZIP, with a Ohio example, city links, and a pre-filtered generator.
· 4 min readUS state guidesOklahoma Address Format (2026) — How to Write a Oklahoma Address
How to write a Oklahoma address: street, city, state code, and ZIP, with a Oklahoma example, city links, and a pre-filtered generator.
· 4 min readUS state guidesOregon Address Format (2026) — How to Write a Oregon Address
How to write a Oregon address: street, city, state code, and ZIP, with a Oregon example, city links, and a pre-filtered generator.
· 4 min readUS state guidesPennsylvania Address Format (2026) — How to Write a Pennsylvania Address
How to write a Pennsylvania address: street, city, state code, and ZIP, with a Pennsylvania example, city links, and a pre-filtered generator.
· 4 min readUS state guidesRhode Island Address Format (2026) — How to Write a Rhode Island Address
How to write a Rhode Island address: street, city, state code, and ZIP, with a Rhode Island example, city links, and a pre-filtered generator.
· 4 min readUS state guidesSouth Carolina Address Format (2026) — How to Write a South Carolina Address
How to write a South Carolina address: street, city, state code, and ZIP, with a South Carolina example, city links, and a pre-filtered generator.
· 4 min readUS state guidesSouth Dakota Address Format (2026) — How to Write a South Dakota Address
How to write a South Dakota address: street, city, state code, and ZIP, with a South Dakota example, city links, and a pre-filtered generator.
· 4 min readUS state guidesTennessee Address Format (2026) — How to Write a Tennessee Address
How to write a Tennessee address: street, city, state code, and ZIP, with a Tennessee example, city links, and a pre-filtered generator.
· 4 min readUS state guidesTexas Address Format (2026) — How to Write a Texas Address
How to write a Texas address: street, city, state code, and ZIP, with a Texas example, city links, and a pre-filtered generator.
· 4 min readUS state guidesUtah Address Format (2026) — How to Write a Utah Address
How to write a Utah address: street, city, state code, and ZIP, with a Utah example, city links, and a pre-filtered generator.
· 4 min readUS state guidesVermont Address Format (2026) — How to Write a Vermont Address
How to write a Vermont address: street, city, state code, and ZIP, with a Vermont example, city links, and a pre-filtered generator.
· 4 min readUS state guidesVirginia Address Format (2026) — How to Write a Virginia Address
How to write a Virginia address: street, city, state code, and ZIP, with a Virginia example, city links, and a pre-filtered generator.
· 4 min readUS state guidesWashington Address Format (2026) — How to Write a Washington Address
How to write a Washington address: street, city, state code, and ZIP, with a Washington example, city links, and a pre-filtered generator.
· 4 min readUS state guidesWest Virginia Address Format (2026) — How to Write a West Virginia Address
How to write a West Virginia address: street, city, state code, and ZIP, with a West Virginia example, city links, and a pre-filtered generator.
· 4 min readUS state guidesWisconsin Address Format (2026) — How to Write a Wisconsin Address
How to write a Wisconsin address: street, city, state code, and ZIP, with a Wisconsin example, city links, and a pre-filtered generator.
· 4 min readUS state guidesWyoming Address Format (2026) — How to Write a Wyoming Address
How to write a Wyoming address: street, city, state code, and ZIP, with a Wyoming example, city links, and a pre-filtered generator.
· 4 min readAddress basics
20 guidesAddress Line 1 vs Line 2 — Field-by-Field QA Checklist
What belongs in address line 1 and line 2, with examples for apartments, suites, buildings, and international forms.
· 6 min readAddress basicsBilling Address vs Shipping Address — What the Difference Is
Why checkout asks for two addresses, when they can be the same, and what to do when a billing address fails verification.
· 6 min readAddress basicsPO Box vs Street Address — Which One a Form Accepts
When a PO box works, when a street address is required, and how to tell the difference before a delivery fails.
· 6 min readAddress basicsWhat Is a Postal Code? ZIP, Postcode, PLZ, and CAP Explained
The names different countries use for a postal code, what the code does, and why the format changes at the border.
· 6 min readAddress basicsZIP Code vs Postal Code — Same Idea, Different Rules
The difference between a ZIP code and a postal code, with examples from the US, Canada, the UK, Germany, and Japan.
· 6 min readAddress basicsHow to Validate an Address Without Guessing
A practical validation checklist: required fields, postal format, country rules, and the difference between format validation and delivery validation.
· 6 min readAddress basicsInternational Address Form Testing Checklist
A QA checklist for country selectors, postal-code rules, state fields, mobile keyboards, and leading zeros.
· 6 min readAddress basicsAddress Format for Ecommerce Checkout — A Practical Guide
How to design a checkout address form that works across countries, with field order, validation, and tax caveats.
· 6 min readAddress basicsApartment Address Format — Unit, Suite, Floor, and Building
How to write an apartment address on one line and on separate lines, with examples for US and international forms.
· 6 min readAddress basicsAPO and FPO Address Format — What Civilians Get Wrong
How APO/FPO/DPO addresses work, why the city and state fields look unusual, and what not to change.
· 6 min readAddress basicsZIP+4 Codes — When the Extra Four Digits Matter
What ZIP+4 adds, when to ask for it, and why most consumer forms should keep it optional.
· 6 min readAddress basicsRural Route and Highway Contract Addresses
How rural route, HC, and box addresses differ from street addresses, and how to validate them without rejecting valid mail.
· 6 min readAddress basicsAddress Data Privacy — What to Store and What to Drop
A practical privacy checklist for address forms, generated test data, analytics, and server logs.
· 6 min readAddress basicsSynthetic Address Testing — A Safe QA Workflow
How to use synthetic addresses in QA without confusing them with real customer data or delivery validation.
· 6 min readAddress basicsVirtual Address vs PO Box — Which Fits a Small Business
The difference between a virtual mailbox, a PO box, and a registered agent address, and what each one can prove.
· 6 min readAddress basicsProof of Address Documents — What to Prepare
The documents banks and agencies usually accept as proof of address, how recent they must be, and what never to fake.
· 6 min readAddress basicsAddress Form Field Order by Country — A Designer’s Cheat Sheet
Field order for US, Canadian, UK, German, French, Japanese, Korean, and Australian address forms, with examples.
· 6 min readAddress basicsCountry, State, and Province Fields — What to Do When They Don’t Apply
How to handle state, province, region, and prefecture fields for countries that use different administrative names.
· 6 min readAddress basicsAddress Autocomplete Testing — What to Check Before You Ship
A QA checklist for address autocomplete: manual entry, wrong suggestions, keyboard use, and country changes.
· 6 min readAddress basicsTen Address Format Mistakes That Break Forms
The most common address mistakes in checkout, signup, and shipping forms, with a quick fix for each.
· 6 min readTesting & QA
10 guidesFake Address Generator: Build Valid Test Addresses (2026)
A fake address generator builds structurally valid synthetic addresses for form and QA testing. See field-order rules, 38-country coverage, seeding, and limits.
· 6 min readTesting & QAUS Address Format in 2026: Line Order, State Codes, ZIP
The US address format in 2026: what belongs on line 1 and line 2, the city-state-ZIP line, USPS state codes, ZIP+4 rules, and the form bugs each one causes.
· 6 min readTesting & QARandom Address Generator for Testing: 2026 QA Playbook
How to use a random address generator in tests without flaky suites: seeded output, fixture scope per tier, edge-case generation, and shape-only assertions.
· 6 min readTesting & QAMAC Address Lookup in 2026: OUI Prefixes, I/G and U/L Bits
How to read a MAC address correctly: the 48-bit layout, OUI prefixes, the I/G and U/L bits, randomized addresses, EUI-64 link-local conversion, and lookup bugs.
· 6 min readTesting & QAIP Address Generator in 2026: Public, Private, Loopback
IP address generator for synthetic IPv4 and IPv6 fixtures: public, private, loopback, link-local, ULA, and global ranges, plus validation rules.
· 6 min readTesting & QAPostal Code Format by Country: 2026 Regex Reference
Postal code formats for 38 countries with working regexes: numeric and alphanumeric systems, no-postal countries, normalization rules, and a test corpus.
· 6 min readTesting & QAAddress Parser in 2026: Tokenization, Ambiguity, Fallbacks
How to build an address parser that admits uncertainty: a staged pipeline, country-aware field order, ambiguity handling, confidence scores, and golden cases.
· 6 min readTesting & QASynthetic Test Data in 2026: Seeded, Safe, Reproducible
Synthetic test data done properly: seeded generation, reserved ranges, referential integrity, volume, and the identifiers a generator should refuse to invent.
· 6 min readTesting & QAAddress Form Testing in 2026: A 40-Point QA Checklist
A 40-point checklist for address forms: field constraints, validation timing, error copy, country dependency, autofill, accessibility, and a regression pack.
· 6 min readTesting & QAUUID v4 vs v7 in 2026: Bit Layout, Sorting, Index Cost
UUID v4 vs v7 explained by their bits: 122 random bits against a 48-bit millisecond timestamp, sort behaviour, B-tree index cost, privacy, and encoding size.
· 6 min readDeep guides
Longer walkthroughs for the three core address tasks.