80540 ZIP Code

Questions about 80540

What city is ZIP code 80540 in?+

80540 is associated with Lyons, Colorado in the bundled dataset. ZIP areas can cross city and county lines, so use the city and county fields together.

What county is 80540 in?+

Boulder. County boundaries and postal areas are not the same thing; a ZIP can serve addresses in more than one county.

What timezone is 80540 in?+

America/Denver. This is the IANA timezone name for the city associated with the ZIP.

Is 80540 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.