Maryland · Howard

21738 ZIP Code

21738 is associated with Glenwood, Maryland. The page shows the county, timezone, nearby ZIPs and links to the state hub for a nearby city generator.

ZIP details

ZIP code
21738
City
Glenwood
State
Maryland (MD)
County
Howard
Timezone
America/New_York
State sales tax
Varies by state

Questions about 21738

What city is ZIP code 21738 in?+
21738 is associated with Glenwood, Maryland in the bundled dataset. ZIP areas can cross city and county lines, so use the city and county fields together.
What county is 21738 in?+
Howard. County boundaries and postal areas are not the same thing; a ZIP can serve addresses in more than one county.
What timezone is 21738 in?+
America/New_York. This is the IANA timezone name for the city associated with the ZIP.
Is 21738 a real ZIP code?+
It appears in the public city dataset bundled with this site. That confirms the format and city association, not that a specific street, mailbox, or resident exists.