ZIP Codes of Mineral County, MT

Population & People
Population & People
Total Population
5,729
Household Income
Household Income
Median Income
$66,160
Housing
Housing
Total Housing Units
2,980
Business & Economy
Business & Economy
Total Businesses
163
Employment
Employment
Employment Rate
51.68%
Education
Education
Bachelor's Degree+
27.91%
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 (4 Standard, 2 PO Box, 0 Unique) [See All]
Area Code:406
Timezone:Mountain (GMT -07:00)
Local Time:2:12:53 PM
Population:5,729 [See All]
FIPS:30061
CBSA:Missoula, MT
Land Area:1,413 sq mi
Water Area:5 sq mi
Coordinates:47.2420, -115.1874
Quick Link:
https://www.zip-codes.com/county/mt-mineral.asp
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Among Montana's 5 fastest-growing counties
#5 statewide, up 21.2% from 2014 to 2024.

Standout ZIPs in this County


Most Populous
Superior · 2,501 people
43.7% of county total
Highest Income
Saint Regis · $73,462 median
1.1× county average
Largest Land Area
Superior · 552.8 sq mi
Spans the most ground
Fastest Growth
Alberton · 41.8% (10-yr)
1,293 → 1,834 residents
Most Educated
Alberton · 28.2% bachelor's+
385 of 1,363 adults 25+

Things worth knowing about Mineral County


5,729 residents live across 6 ZIPs covering 1,413 sq mi, served by 6 distinct USPS-recognized cities.

Population moved from 4,727 to 5,729 from 2014 to 2024 — a +21.2% change. 5 ZIPs gained residents, 1 lost.

The county's wealthiest ZIP 59866 (Saint Regis, $73,462 median) and poorest ZIP 59872 (Superior, $55,926) are 16.3 miles apart — a 1.3× income gap across local geography.

Median home values vary 1.2× across this county — from $337,500 in 59830 (De Borgia) to $396,600 in 59872 (Superior).

Density varies across the county — from 1 people/sq mi in 59830 (De Borgia) to 6 in 59866 (Saint Regis).

Educational attainment ranges from 19.9% bachelor's+ in 59872 (Superior) to 70.3% in 59830 (De Borgia) — the breadth of educational profiles across the area.

Within Montana, this is the #33 most populous of 56 counties and ranks #29 for median household income with the #5 fastest decade growth .

Weighted by population, the typical household earns about $64,024 across the county — reflecting what a typical resident sees, not a simple ZIP average.

27.9% of adults age 25+ hold a bachelor's degree or higher (1,207 of 4,325 reporting).

4 Standard delivery, 2 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Mineral 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
1,413
square miles
Avg density
4.1
people per sq mi
Population
5,729
across 6 ZIPs
Superior
552.8 sq mi
2,501 residents
Alberton
442.2 sq mi
1,834 residents
Saint Regis
205.3 sq mi
1,161 residents

All ZIP Codes in Mineral County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
59872SuperiorStandard2,501$55,926552.811.4%
59820AlbertonStandard1,834$69,091442.241.8%
59866Saint RegisStandard1,161$73,462205.314.7%
59830De BorgiaPO Box10287.275.9%
59867SalteseStandard8522.2672.7%
59842HauganPO Box46102.8-57.4%

Adjacent & Nearby Counties