Firth, ID ZIP Code

ZIP code, county, time zone and coordinates of Firth, Idaho

The ZIP code of Firth, ID is 83218. It is in Bingham County.

Mailing address format for Firth

John Smith
123 Main St
FIRTH ID 83218
USA

USPS prefers capital letters without punctuation. Check the exact ZIP+4 for a street address on the USPS website.

ZIP code	Population	Area
83218	—	0.5 sq mi	Main

ZIP Code Tabulation Areas (ZCTA), U.S. Census Bureau. A ZCTA can cover parts of more than one town.

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What is the ZIP code for Firth, ID?

The main ZIP code for Firth, ID is 83218.

How many ZIP codes does Firth have?

Firth has 1 ZIP code.

What county is Firth, ID in?

Firth is in Bingham County, Idaho.

What time zone is Firth in?

Firth is in the America/Boise time zone (MST, UTC-07:00 right now).

What are the coordinates of Firth?

Latitude 43.30577, longitude -112.18344.

Last updated: November 14, 2026