ZIP Codes of Golden Valley County, MT

Population & People
Population & People
Total Population
990
Household Income
Household Income
Median Income
$61,896
Housing
Housing
Total Housing Units
553
Business & Economy
Business & Economy
Total Businesses
14
Employment
Employment
Employment Rate
51.56%
Education
Education
Bachelor's Degree+
21.77%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 2 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:2 ZIP Codes (2 Standard, 0 PO Box, 0 Unique) [See All]
Area Code:406
Timezone:Mountain (GMT -07:00)
Local Time:2:12:53 PM
Population:990 [See All]
FIPS:30037
Land Area:1,314 sq mi
Water Area:1 sq mi
Coordinates:46.4011, -109.1279
Quick Link:
https://www.zip-codes.com/county/mt-golden-valley.asp
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Boom county
Grew 31.8% in 10 years — #49 nationwide.

Standout ZIPs in this County


Most Populous
Lavina · 577 people
58.3% of county total
Highest Income
Lavina · $74,000 median
1.2× county average
Largest Land Area
Lavina · 670.8 sq mi
Spans the most ground
Fastest Growth
— growth not calculable
Most Educated
— no education data

Things worth knowing about Golden Valley County


990 residents live across 2 ZIPs covering 1,314 sq mi, served by 2 distinct USPS-recognized cities.

Population moved from 751 to 990 from 2014 to 2024 — a +31.8% change. 2 ZIPs gained residents, 0 lost.

The county's wealthiest ZIP 59046 (Lavina, $74,000 median) and poorest ZIP 59074 (Ryegate, $49,792) are 13.1 miles apart — a 1.5× income gap across local geography.

Median home values vary 1.3× across this county — from $168,800 in 59074 (Ryegate) to $211,400 in 59046 (Lavina).

Density varies across the county — from 1 people/sq mi in 59074 (Ryegate) to 1 in 59046 (Lavina).

Educational attainment ranges from 13.7% bachelor's+ in 59074 (Ryegate) to 28.9% in 59046 (Lavina) — the breadth of educational profiles across the area.

Within Montana, this is the #55 most populous of 56 counties and ranks #40 for median household income with the #2 fastest decade growth .

On the national stage, Golden Valley County is and #49 for decade growth .

Weighted by population, the typical household earns about $63,901 across the county — reflecting what a typical resident sees, not a simple ZIP average.

21.8% of adults age 25+ hold a bachelor's degree or higher (167 of 767 reporting).

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

Stories about Golden Valley 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
1,314
square miles
Avg density
0.8
people per sq mi
Population
990
across 2 ZIPs
Lavina
670.8 sq mi
577 residents
Ryegate
643.3 sq mi
413 residents

All ZIP Codes in Golden Valley County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
59046LavinaStandard577$74,000670.845.0%
59074RyegateStandard413$49,792643.317.0%

Adjacent & Nearby Counties