ZIP Codes of Teton County, MT

Population & People
Population & People
Total Population
6,424
Household Income
Household Income
Median Income
$67,320
Housing
Housing
Total Housing Units
2,945
Business & Economy
Business & Economy
Total Businesses
228
Employment
Employment
Employment Rate
59.02%
Education
Education
Bachelor's Degree+
26.56%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 6 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:6 ZIP Codes (5 Standard, 1 PO Box, 0 Unique) [See All]
Area Code:406
Timezone:Mountain (GMT -07:00)
Local Time:2:12:54 PM
Population:6,424 [See All]
FIPS:30099
Land Area:2,151 sq mi
Water Area:18 sq mi
Coordinates:47.8544, -112.0791
Quick Link:
https://www.zip-codes.com/county/mt-teton.asp
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Montana's #32 most populous county
6,424 residents across 6 ZIPs — #32 of 56 Montana counties.

Standout ZIPs in this County


Most Populous
Choteau · 2,938 people
45.7% of county total
Highest Income
Power · $82,895 median
1.2× county average
Largest Land Area
Choteau · 1,094.0 sq mi
Spans the most ground
Fastest Growth
Choteau · 19.3% (10-yr)
2,462 → 2,938 residents
Most Educated
Fairfield · 27.8% bachelor's+
367 of 1,320 adults 25+

Things worth knowing about Teton County


6,424 residents live across 6 ZIPs covering 2,151 sq mi, served by 6 distinct USPS-recognized cities.

Population moved from 6,008 to 6,424 from 2014 to 2024 — a +6.9% change. 3 ZIPs gained residents, 3 lost.

The county's wealthiest ZIP 59468 (Power, $82,895 median) and poorest ZIP 59467 (Pendroy, $61,250) are 44.9 miles apart — a 1.4× income gap across local geography.

Median home values vary 2.0× across this county — from $161,100 in 59433 (Dutton) to $324,100 in 59436 (Fairfield).

Density varies across the county — from 1 people/sq mi in 59467 (Pendroy) to 7 in 59436 (Fairfield).

Educational attainment ranges from 9.6% bachelor's+ in 59467 (Pendroy) to 34.0% in 59433 (Dutton) — the breadth of educational profiles across the area.

Within Montana, this is the #32 most populous of 56 counties and ranks #27 for median household income with the #23 fastest decade growth .

Weighted by population, the typical household earns about $73,362 across the county — reflecting what a typical resident sees, not a simple ZIP average.

26.6% of adults age 25+ hold a bachelor's degree or higher (1,180 of 4,443 reporting).

5 Standard delivery, 1 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Teton County


Big & sparse

A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.

Total area
2,151
square miles
Avg density
3.0
people per sq mi
Population
6,424
across 6 ZIPs
Choteau
1,094.0 sq mi
2,938 residents
Dutton
333.3 sq mi
421 residents
Fairfield
294.0 sq mi
2,039 residents

All ZIP Codes in Teton County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
59422ChoteauStandard2,938$67,5001,094.019.3%
59436FairfieldStandard2,039$80,652294.07.3%
59468PowerStandard858$82,895246.422.7%
59433DuttonStandard421$66,000333.3-31.9%
59467PendroyPO Box124$61,250136.5-31.5%
59419BynumStandard44$45,62546.7-70.1%

Adjacent & Nearby Counties