County Maps US

Ravalli County, Montana

A county in Montana, ranked 7 of 56 by population.

CountyFIPS 30081

Within Montana
Ravalli County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Hamilton, the county seat, located via the 2025 Census Gazetteer.

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Population
48,582
+4,170 (+9.4%) since 2020
Land area
2,391
square miles. A further 0.4% of the total area is water
Population density
20.3
people per square mile, computed rather than published
County seat
Hamilton
Seat of county government.
Established
1893
132 years ago
Largest city
Hamilton city
Population 5,451.

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

Satellite view

Aerial imagery of Ravalli County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Ravalli County, Montana from the USGS National Map, with its boundary outlined
Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 519 by 800 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Ravalli County ranks

Position among the 56 counties of Montana, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn MontanaNationally
Population48,5827th of 561,029th of 3,144
Land area2,391 sq mi27th of 56230th of 3,144
Population density20.3 per sq mi9th of 562,236th of 3,144
Median household income$71,28316th of 561,107th of 3,143

Full data for Ravalli County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population48,582Vintage 2025 Population Estimates
Population in 202044,412Vintage 2025 Population Estimates
2020 estimates base?44,175Vintage 2025 Population Estimates
Land area2,391 sq mi2025 Gazetteer Files
Water area9.4 sq mi2025 Gazetteer Files
Total area2,400 sq mi2025 Gazetteer Files
Population density?20.3 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$71,283American Community Survey 2020-2024 5-Year Estimates
Median home value$476,600American Community Survey 2020-2024 5-Year Estimates
Median age48.7American Community Survey 2020-2024 5-Year Estimates
Households18,661American Community Survey 2020-2024 5-Year Estimates
Housing units21,179American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths
-156
388 births, 544 deaths
Net migration
+709
More people moved in than moved out.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 6 areas bordering Ravalli County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering areaStateShared borderPopulation
Idaho CountyIdaho117 mi17,874
Granite CountyMontana81 mi3,658
Lemhi CountyIdaho53 mi8,474
Beaverhead CountyMontana39 mi10,043
Missoula CountyMontana24 mi123,513
Deer Lodge CountyMontana0.1 mi9,709

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

All 56 counties of Montana

Open the interactive Montana county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.