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/MT/CARTER

Carter ZIP code, Montana

The ZIP code for Carter, MT is 59420, and its area code is 406.

USPS city name
1 ZIP code
Population
60
Area code
406
State
Montana

ZIP codes addressed as Carter

ZIP codes with the USPS city name Carter
ZIP City Type Population Median income Median home
59420 Carter , MT Standard 164 $88,438 $117,100

Map of Carter ZIP codes

59420

The ZIP codes of Carter, MT, 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 Carter

The nearest larger towns are Fort Benton (1,474 people, 13 mi), Highwood (205 people, 14 mi) and Malmstrom AFB (4,302 people, 22 mi).

Towns near Carter
TownPopulationDistance
Malmstrom AFB 4,302 22.1 mi
Great Falls 60,329 25.6 mi

More nearby: every ZIP code in Chouteau County · Montana ZIP codes

Cite this page

zipcodes.pro. “Carter, MT ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/mt/carter

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