ZIP Codes of Stillwater County, MT

Population & People
Population & People
Total Population
9,273
Household Income
Household Income
Median Income
$82,388
Housing
Housing
Total Housing Units
4,762
Business & Economy
Business & Economy
Total Businesses
267
Employment
Employment
Employment Rate
59.60%
Education
Education
Bachelor's Degree+
32.34%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 7 ZIPs in this county.
Data Last Updated: July 1, 2026
ZIP Codes:7 ZIP Codes (7 Standard, 0 PO Box, 0 Unique) [See All]
Area Code:406
Timezone:Mountain (GMT -07:00)
Local Time:11:54:13 PM
Population:9,273 [See All]
FIPS:30095
CBSA:Billings, MT
Land Area:1,670 sq mi
Water Area:10 sq mi
Coordinates:45.5959, -109.4291
Quick Link:
https://www.zip-codes.com/county/mt-stillwater.asp
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Montana's #24 most populous county
9,273 residents across 7 ZIPs — #24 of 56 Montana counties.

Standout ZIPs in this County


Most Populous
Columbus · 4,438 people
47.9% of county total
Highest Income
Park City · $99,432 median
1.2× county average
Largest Land Area
Reed Point · 394.9 sq mi
Spans the most ground
Fastest Growth
Columbus · 8.5% (10-yr)
4,089 → 4,438 residents
Most Educated
Absarokee · 37.4% bachelor's+
387 of 1,035 adults 25+

Things worth knowing about Stillwater County


9,273 residents live across 7 ZIPs covering 1,670 sq mi, served by 7 distinct USPS-recognized cities.

Population moved from 9,076 to 9,273 from 2014 to 2024 — a +2.2% change. 3 ZIPs gained residents, 4 lost.

The county's wealthiest ZIP 59063 (Park City, $99,432 median) and poorest ZIP 59069 (Reed Point, $72,500) are 28.6 miles apart — a 1.4× income gap across local geography.

Median home values vary 1.5× across this county — from $359,000 in 59001 (Absarokee) to $551,900 in 59028 (Fishtail).

Density varies 53× across the county — from 1 people/sq mi in 59067 (Rapelje) to 30 in 59063 (Park City).

Educational attainment ranges from 17.2% bachelor's+ in 59069 (Reed Point) to 38.5% in 59061 (Nye) — the breadth of educational profiles across the area.

Within Montana, this is the #24 most populous of 56 counties and ranks #8 for median household income .

Weighted by population, the typical household earns about $86,399 across the county — reflecting what a typical resident sees, not a simple ZIP average.

32.3% of adults age 25+ hold a bachelor's degree or higher (2,192 of 6,777 reporting).

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

Stories about Stillwater 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
1,670
square miles
Avg density
5.6
people per sq mi
Population
9,273
across 7 ZIPs
Reed Point
394.9 sq mi
458 residents
Columbus
349.6 sq mi
4,438 residents
Rapelje
269.6 sq mi
152 residents

All ZIP Codes in Stillwater County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
59019ColumbusStandard4,438$84,591349.68.5%
59063Park CityStandard2,070$99,43268.80.4%
59001AbsarokeeStandard1,409$82,692169.4-3.2%
59028FishtailStandard496$72,969207.6-1.4%
59069Reed PointStandard458$72,500394.9-4.0%
59061NyeStandard250$92,031210.243.7%
59067RapeljeStandard152$72,500269.6-51.9%

Adjacent & Nearby Counties