Idaho ZIP codes

All 320 ZIPs in Idaho, 83201 to 83877. Tap one on the map or in the list.

320

ZIP codes

1,933,906

people live in them

counties

PO Box & no-area ZIPs

Most people

← All states

All 320 Idaho ZIP codes

Questions people actually ask

How many ZIP codes are in Idaho?

320 ZIP codes are in use in Idaho. 279 cover a delivery area, and 41 are PO Box, single-building or organization ZIPs with no area of their own.

What do Idaho ZIP codes start with?

Idaho ZIP codes start with these three-digit prefixes: 832–838. Each prefix is a mail sorting area run from one processing center.

Which Idaho ZIP code has the most people?

83646 in Meridian has the most residents of any Idaho ZIP, about 76,023 people in the Census Bureau’s ACS 2020–2024 estimates.

Which Idaho county has the most ZIP codes?

Ada County touches 37 ZIP codes, the most of the 44 counties in Idaho. 84 Idaho ZIPs reach into more than one county.

Are these the official USPS ZIP code boundaries?

The map uses Census ZIP Code Tabulation Areas, the standard public stand-in for USPS delivery areas. They match for almost every home. For a mailing address, the USPS ZIP Code lookup has the final word.

Keep exploring

My ZIP codeYour ZIP, lit up on the map, with the numbers behind it.Open What county am I inYour county, lit up with its border and how far the county line is.Open What time zone am I inYour zone, UTC offset and daylight saving, plus every US zone at a glance.Open ZIP code mapEvery US ZIP code with its boundary. Hover, tap, color by data.Open Radius mapDrag a circle and watch every ZIP inside light up. Copy or export.Open ZIP GuessrFive ZIPs a day. Tap where each one is, keep your streak, share your score.Open ZIP codes near meEvery ZIP around you, nearest first, with distance and direction.Open ZIP distanceMiles between two ZIP codes, drawn as a flight path.Open

Updated 2026-11-10 · Where the data comes from

Idaho ZIP codes

All 320 Idaho ZIP codes

ZIP codes by county

Questions people actually ask

Keep exploring