Golden Valley County area

Golden Valley County, Montana covers 1,175.4 square miles: 1,174.4 square miles of land and 1.012 square miles of water. Its county seat is Ryegate. An estimated 844 people lived there in 2025.

Official Census measurements · GEOID 300372026 Gazetteer · retrieved September 27, 2026
Land area1,174.4 mi²
Water area1.012 mi²
Population (2025)844
People per mi²0.72

County outline

Generalized outline of Golden Valley County, Montana
2025 Census cartographic boundary, fitted to this frame. County maps are not at a common scale. The 2026 area measurements below come from the separate Gazetteer release. Map source and limitations.

Where Golden Valley County is located

Golden Valley County highlighted on a map of all U.S. county equivalents. About the maps

Area breakdown

Land accounts for 99.9% of Golden Valley County’s measured area and water for 0.1%. Its combined area converts to 3,044.4 square kilometers or approximately 752,278 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land1,174.4233,041.742751,630.7
Water1.0122.621647.7
Total1,175.4353,044.363752,278.4

How Golden Valley County compares

By original Census land area, Golden Valley County ranks #52 of 56 in Montana and #523 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 0.497 times the Montana county-equivalent median of 2,363.3 square miles. It accounts for 0.8% of the combined county land area in the state.

See the complete Montana ranking · What counts as a county equivalent?

Population and density of Golden Valley County

The Census Bureau estimates that 844 people lived in Golden Valley County on July 1, 2025. That ranks #3,193 of 3,222 county equivalents nationally and #54 of 56 in Montana. Since the April 1, 2020 estimates base of 826, the population has grown by 18 (+2.2%), compared with +5.6% for Montana as a whole.

With 1,174.4 square miles of land, that is 0.72 people per square mile (0.28 per km²), placing Golden Valley County #3,179 nationally for density and #50 in Montana. The median county equivalent has 47 people per square mile; the Montana median is 2.8. Put another way, there are about 891 acres of land per resident.

Estimated population, 2020–2025 · line scaled to this county’s own range
July 1202020212022202320242025
Estimate822820842864844844
Change—−2+22+22−200

U.S. Census Bureau, Vintage 2025 population estimates. Estimates are revised each year and are not decennial census counts. Density divides the whole population by the whole county’s land area, so it describes an average, not how settlement is distributed within the county. Population sources and methods.

Cities and towns in Golden Valley County

2 incorporated places lie at least partly in Golden Valley County. Together they are home to 369 people (43.7%); the other 475 (56.3%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Ryegate town, with 228 residents in the county. By land, Lavina town is the largest at 1.011 mi².

Incorporated placePopulation 2025Since 2020Land mi²
Ryegate townCounty seat228+2.2%0.754
Lavina town141+2.2%1.011

Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Golden Valley County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.

Metropolitan area

Golden Valley County is not part of any metropolitan or micropolitan statistical area in the Office of Management and Budget’s July 2023 delineation; 1,306 other county equivalents are also outside one. These areas are built around an urban core of at least 10,000 people plus the counties tied to it by commuting, so counties outside them are generally rural.

ZIP codes

3 ZIP Code Tabulation Areas have land in Golden Valley County; 2 of them have most of their land inside the county, and the others mainly cover neighboring areas.

590465907459078

ZIP Code Tabulation Areas are the Census Bureau’s approximations of USPS ZIP Code service areas, from the 2020 Census relationship files. Lighter codes have less than half of their land in this county. Post-office-box and single-address ZIP Codes have no tabulation area.

Counties bordering Golden Valley County

Golden Valley County shares a land border with 6 county equivalents. Each of them has more land than Golden Valley County. The largest neighbor is Fergus County (4,339.3 mi²) and the smallest is Wheatland County (1,422.5 mi²). Together with its neighbors, Golden Valley County forms a block of 15,090.7 mi² of land, of which it holds 7.8%.

Map of Golden Valley County and the 6 county equivalents that border it Musselshell County, Montana: 1,869 mi² landWheatland County, Montana: 1,422.5 mi² landStillwater County, Montana: 1,796.5 mi² landFergus County, Montana: 4,339.3 mi² landSweet Grass County, Montana: 1,855.5 mi² landYellowstone County, Montana: 2,633.4 mi² land
Golden Valley County (dark) and its bordering county equivalents. Select a neighbor to open its profile. Drawn from the 2025 Census cartographic boundaries in an equal-area projection. How borders are determined.
Bordering county equivalentLand mi²Size vs. Golden ValleyCompare
Fergus County4,339.33.7× largerCompare
Yellowstone County2,633.42.2× largerCompare
Musselshell County1,8691.6× largerCompare
Sweet Grass County1,855.51.6× largerCompare
Stillwater County1,796.51.5× largerCompare
Wheatland County1,422.51.2× largerCompare

How big is Golden Valley County compared with U.S. states?

Golden Valley County has more land than 1 of the 50 states. It is about 1.1 times the land area of Rhode Island (1,033.9 mi²), while Delaware, the next larger state, has 1.7 times as much land (1,948.6 mi²). Montana’s county land could hold about 124 areas the size of Golden Valley County.

Land area: Golden Valley County and the closest-sized states
Rhode Island1,033.9 mi²
Golden Valley County1,174.4 mi²
Delaware1,948.6 mi²

Another way to picture it: the same land area would fill a square about 34.3 miles (55.2 km) on each side. Real county shapes are rarely square, so this is a scale reference rather than a width or driving distance.

State figures are the sums of each state’s county-equivalent land measurements in the same Census release, so states and counties are compared on the same basis. Published state totals can differ slightly because of rounding. Compare all states · Counties bigger than entire states.

What stands out about Golden Valley County?

Golden Valley County has more land than 2,699 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
Golden Valley County1,174.4 mi²
Montana median2,363.3 mi²
National median604.5 mi²

A median is the middle county-equivalent measurement, not the average of the largest and smallest. All three bars use the same linear scale. Very small areas may appear as a thin sliver; the labels retain their values.

Does including water change its rank?

Using land plus water places Golden Valley County at #605 nationally by total area, 82 places farther from the top than its land rank. Other county equivalents gain more area when their water measurements are included.

Its water share is 0.1%, compared with a national county-equivalent median of 1.2% — 1.1 percentage points lower. This describes the statistical geography’s land/water mix, not flood exposure or developable land.

Closest positions in the national land ranking

These entries sit immediately beside Golden Valley County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#522Reagan County, Texas1,175.3Compare
#523Golden Valley County, Montana1,174.4This county
#524Vermilion Parish, Louisiana1,172.1Compare

Calculated from the same Census release as the area table. Total-area order uses original ALAND + AWATER; water shares and chart labels use published square miles. Calculation details.

Representative coordinates

The Census internal point is 46.380624, -109.174586. It represents a location inside the geography; it is not necessarily the centroid or the address of a courthouse.

Source and precision

U.S. Census Bureau, 2026 Gazetteer Files, Counties. Original ALAND: 3,041,740,568 m²; AWATER: 2,621,792 m². Rankings use ALAND; exact ties use ascending GEOID. Tables preserve Census-published square miles to three decimals, with conversions based on those values.

Download the official county source ZIP ↗ · Methodology

Common questions

How big is Golden Valley County?

Golden Valley County, Montana has 1,174.4 square miles (3,041.7 km²) of land and 1.012 square miles of water, for a total area of 1,175.4 square miles. It ranks #523 of 3,222 U.S. county equivalents by land area.

Is Golden Valley County the largest county in Montana?

No. Golden Valley County ranks #52 of 56 in Montana by land area. The largest is Beaverhead County, with 5,542.7 square miles of land.

What counties border Golden Valley County?

Golden Valley County shares a land border with Musselshell County, Wheatland County, Stillwater County, Fergus County, Sweet Grass County, and Yellowstone County.

What is the population of Golden Valley County?

The Census Bureau estimates Golden Valley County had 844 residents on July 1, 2025, ranking #3,193 of 3,222 county equivalents. That is 0.72 people per square mile of land.

What is the county seat of Golden Valley County?

The county seat of Golden Valley County is Ryegate.

What cities and towns are in Golden Valley County?

Golden Valley County has 2 incorporated places. The most populous are Ryegate town and Lavina town; 475 residents live outside any incorporated place.

Is Golden Valley County part of a metropolitan area?

No. Golden Valley County is outside every metropolitan and micropolitan statistical area in the July 2023 OMB delineation.

How many ZIP codes are in Golden Valley County?

3 ZIP Code Tabulation Areas have land in Golden Valley County, and 2 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.

How does Golden Valley County compare with U.S. states?

It has more land than 1 of the 50 states, including Rhode Island (1,033.9 square miles of land).

How many acres of land are in Golden Valley County?

The land measurement converts to approximately 751,631 acres. Including water, total area is approximately 752,278 acres. One square mile equals 640 acres.

Why might another source show a different area?

Check whether it reports land or total area, its Census vintage, and its rounding. Our guide explains how to reconcile county area figures.

Can this establish a property boundary?

No. Statistical measurements and generalized maps do not establish property lines. Consult the relevant local surveying or land-records authority.

Cite this county

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