Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/ID/IDAHO-CITY

Idaho City ZIP code, Idaho

The ZIP code for Idaho City, ID is 83631, and its area code is 208.

USPS city name
1 ZIP code
Population
581
Area code
208
State
Idaho

NANPA lists no telephone rate centre for Idaho City itself, so these are the area codes of the nearest one, Garden Valley (15.9 miles). A town on an area-code boundary can differ from its neighbour.

Idaho City in numbers

About 581 people live in Idaho City, in 284 households. The median household income is $44,722 a year, 43% below the Idaho median of $77,800 (US: $80,734). Median gross rent is $780 a month. The median age is 38.5; 16.1% of adults 25 and over hold a bachelor's degree or higher (31.8% across Idaho); the average commute takes 29 minutes.

Population581Idaho City581
Households284Idaho City284
Median age38.5Idaho City38.5Idaho37.3US 38.9
Median household income$44,722Idaho City$44,722Idaho$77,800US $80,734
Median gross rent$780Idaho City$780Idaho$1,238US $1,413
Bachelor's degree or higher16.1%Idaho City16.1%Idaho31.8%US 35.7%
Mean commute29.1 minIdaho City29.1 minIdaho21.6 minUS 26.4 min
Population density872 / sq miIdaho City872 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Idaho City city. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Idaho City

ZIP codes with the USPS city name Idaho City
ZIP City Type Population Median income Median home
83631 Idaho City , ID Standard 1,916 $80,714 $409,800

Map of Idaho City ZIP codes

83631

The ZIP codes of Idaho City, ID, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Idaho City

The nearest larger towns are Robie Creek (1,213 people, 14 mi), Horseshoe Bend (758 people, 19 mi) and Avimor (586 people, 22 mi).

Towns near Idaho City
TownPopulationDistance
Hidden Springs 3,378 22.7 mi
Boise City 237,242 25.4 mi
Garden City 12,654 25.6 mi
Eagle 32,855 29.4 mi

More nearby: every ZIP code in Boise County · Idaho ZIP codes

Cite this page

zipcodes.pro. “Idaho City, ID ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/id/idaho-city

Underlying data is public domain or openly licensed — sources, vintages and licences.