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zipcodes.pro — STATE/MT/COUNTY/CARTER

Carter County, MT ZIP codes

Carter County, MT has 4 ZIP codes, in 4 towns: 59324, 59311, 59319 and 59332.

The county seat is Ekalaka.

ZIP codes
4
Towns
4
County seat
Ekalaka
County FIPS
30011
State
Montana
Population
1,308
Median household income
$54,167
Land area
3,340 sq mi

Carter County ZIP codes by town

Ekalaka (county seat)
59324

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

Map of Carter County ZIP codes

59311593195932459332

The ZIP codes of Carter County, 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.

Carter County in numbers

About 1,308 people live in Carter County, in 600 households, the 50th most populous of Montana's 56 counties. The median household income is $54,167 a year, 25% below the Montana median of $72,509 (US: $80,734). The median owner-occupied home is valued at $199,200 (47% below the Montana median), and median gross rent is $824 a month. The median age is 56.9; 20.7% of adults 25 and over hold a bachelor's degree or higher (35.2% across Montana); the average commute takes 20 minutes.

Population1,308Carter1,308
Households600Carter600
Median age56.9Carter56.9Montana40.4US 38.9
Median household income$54,167Carter$54,167Montana$72,509US $80,734
Median home value$199,200Carter$199,200Montana$375,800US $332,700
Median gross rent$824Carter$824Montana$1,081US $1,413
Bachelor's degree or higher20.7%Carter20.7%Montana35.2%US 35.7%
Mean commute19.5 minCarter19.5 minMontana19.1 minUS 26.4 min
Population density0 / sq miCarter0 / sq mi

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

Largest towns in Carter County

Largest towns in Carter County
TownZIP codesPopulation
Ekalaka 1 276
Hammond 1 140
Capitol 1 40
Alzada 1 13

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Carter County.

Not sure you are in Carter County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Carter County, with figures

ZIP codes in Carter County
ZIP City Type Population Median income Median home
59311 Alzada , MT Standard 143 $88,021 —
59319 Capitol , MT Standard 40 — —
59324 Ekalaka , MT Standard 777 $57,188 $176,000
59332 Hammond , MT Standard 140 $32,241 —

Cite this page

zipcodes.pro. “Carter County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/mt/county/carter

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