ZIP Codes of Dawson County, MT

Population & People
Population & People
Total Population
8,790
Household Income
Household Income
Median Income
$77,925
Housing
Housing
Total Housing Units
4,358
Business & Economy
Business & Economy
Total Businesses
292
Employment
Employment
Employment Rate
61.17%
Education
Education
Bachelor's Degree+
21.67%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 4 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:4 ZIP Codes (4 Standard, 0 PO Box, 0 Unique) [See All]
Area Code:406
Timezone:Mountain (GMT -07:00)
Local Time:2:12:52 PM
Population:8,790 [See All]
FIPS:30021
Land Area:2,290 sq mi
Water Area:9 sq mi
Coordinates:47.3648, -105.0092
Quick Link:
https://www.zip-codes.com/county/mt-dawson.asp
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Montana's #26 most populous county
8,790 residents across 4 ZIPs — #26 of 56 Montana counties.

Standout ZIPs in this County


Most Populous
Glendive · 8,133 people
92.5% of county total
Highest Income
Lindsay · $88,594 median
1.1× county average
Largest Land Area
Glendive · 984.0 sq mi
Spans the most ground
Fastest Growth
Glendive · -4.7% (10-yr)
8,535 → 8,133 residents
Most Educated
Glendive · 21.7% bachelor's+
1,233 of 5,691 adults 25+

Things worth knowing about Dawson County


8,790 residents live across 4 ZIPs covering 2,290 sq mi, served by 4 distinct USPS-recognized cities.

Population moved from 9,188 to 8,790 from 2014 to 2024 — a -4.3% change. 1 ZIPs gained residents, 3 lost.

The county's wealthiest ZIP 59339 (Lindsay, $88,594 median) and poorest ZIP 59315 (Bloomfield, $68,750) are 24.6 miles apart — a 1.3× income gap across local geography.

Median home values vary 1.7× across this county — from $130,400 in 59259 (Richey) to $227,600 in 59339 (Lindsay).

Density varies 20× across the county — from 0 people/sq mi in 59315 (Bloomfield) to 8 in 59330 (Glendive).

Educational attainment ranges from 15.2% bachelor's+ in 59339 (Lindsay) to 24.9% in 59259 (Richey) — the breadth of educational profiles across the area.

Within Montana, this is the #26 most populous of 56 counties and ranks #11 for median household income .

Weighted by population, the typical household earns about $71,843 across the county — reflecting what a typical resident sees, not a simple ZIP average.

21.7% of adults age 25+ hold a bachelor's degree or higher (1,327 of 6,123 reporting).

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

Stories about Dawson 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
2,290
square miles
Avg density
3.8
people per sq mi
Population
8,790
across 4 ZIPs
Glendive
984.0 sq mi
8,133 residents
Richey
643.8 sq mi
345 residents
Lindsay
409.5 sq mi
208 residents

Single-ZIP anchor

One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.

Glendive

All ZIP Codes in Dawson County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
59330GlendiveStandard8,133$70,964984.0-4.7%
59259RicheyStandard345$83,393643.8-9.0%
59339LindsayStandard208$88,594409.530.0%
59315BloomfieldStandard104$68,750253.0-8.8%

Adjacent & Nearby Counties