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zipcodes.pro — CITY/MT/JEFFERSON-CITY

Jefferson City ZIP code, Montana

The ZIP code for Jefferson City, MT is 59638, and its area code is 406.

USPS city name
1 ZIP code
Overlapping the city
1 more
Population
533
Area code
406
State
Montana

NANPA lists no telephone rate centre for Jefferson City itself, so these are the area codes of the nearest one, Boulder (13.1 miles). A town on an area-code boundary can differ from its neighbour.

Mail addressed to Jefferson City uses the ZIP code above. 1 more ZIP code covers part of the city but is addressed as somewhere else; they are listed separately below.

Jefferson City in numbers

About 533 people live in Jefferson City, in 204 households. The median household income is $125,682 a year, 73% above the Montana median of $72,509 (US: $80,734). The median age is 55.2; 25.5% of adults 25 and over hold a bachelor's degree or higher (35.2% across Montana); the average commute takes 27 minutes.

Population533Jefferson City533
Households204Jefferson City204
Median age55.2Jefferson City55.2Montana40.4US 38.9
Median household income$125,682Jefferson City$125,682Montana$72,509US $80,734
Bachelor's degree or higher25.5%Jefferson City25.5%Montana35.2%US 35.7%
Mean commute27.3 minJefferson City27.3 minMontana19.1 minUS 26.4 min
Population density23 / sq miJefferson City23 / sq mi

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

ZIP codes addressed as Jefferson City

ZIP codes with the USPS city name Jefferson City
ZIP City Type Population Median income Median home
59638 Jefferson City , MT Standard 769 $126,723 —

Other ZIP codes overlapping Jefferson City

These ZIP codes cover part of Jefferson City but are addressed as somewhere else.

ZIP codes overlapping Jefferson City
ZIP City Type Population Median income Median home
59634 Clancy , MT Standard 5,521 $129,891 $553,900

Map of Jefferson City ZIP codes

59638

The ZIP codes of Jefferson City, 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 Jefferson City

The nearest larger towns are Clancy (1,874 people, 5.1 mi), Boulder (1,284 people, 11 mi) and Montana City (3,092 people, 11 mi).

Towns near Jefferson City
TownPopulationDistance
Montana City 3,092 11.1 mi
Helena 33,639 15.1 mi
Helena Valley Southeast 9,108 18.0 mi
Helena Valley West Central 8,056 19.6 mi
Helena Valley Northeast 4,659 23.1 mi
Helena Valley Northwest 5,183 24.3 mi

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

Cite this page

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

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