County Maps US

Mesa County, Colorado

A county in Colorado, ranked 11 of 64 by population.

CountyFIPS 08077

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

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Population
162,845
+6,838 (+4.4%) since 2020
Land area
3,329
square miles. A further 0.4% of the total area is water
Population density
48.9
people per square mile, computed rather than published
County seat
Grand Junction
Seat of county government.
Established
1883
142 years ago
Largest city
Grand Junction city
Population 71,827.

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 Mesa 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 Mesa County, Colorado 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 800 by 559 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 Mesa County ranks

Position among the 64 counties of Colorado, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn ColoradoNationally
Population162,84511th of 64431st of 3,144
Land area3,329 sq mi4th of 64152nd of 3,144
Population density48.9 per sq mi13th of 641,496th of 3,144
Median household income$73,65832nd of 64939th of 3,143

Full data for Mesa County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population162,845Vintage 2025 Population Estimates
Population in 2020156,007Vintage 2025 Population Estimates
2020 estimates base?155,710Vintage 2025 Population Estimates
Land area3,329 sq mi2025 Gazetteer Files
Water area12.4 sq mi2025 Gazetteer Files
Total area3,341 sq mi2025 Gazetteer Files
Population density?48.9 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$73,658American Community Survey 2020-2024 5-Year Estimates
Median home value$378,600American Community Survey 2020-2024 5-Year Estimates
Median age41.3American Community Survey 2020-2024 5-Year Estimates
Households65,830American Community Survey 2020-2024 5-Year Estimates
Housing units69,969American 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
-161
1,564 births, 1,725 deaths
Net migration
+1,600
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 7 areas bordering Mesa 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
Garfield CountyColorado87 mi63,474
Delta CountyColorado79 mi32,178
Grand CountyUtah60 mi9,790
Montrose CountyColorado49 mi44,591
Pitkin CountyColorado14 mi16,625
Gunnison CountyColorado8.6 mi17,439
San Juan CountyUtaha single point14,542

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

All 64 counties of Colorado

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

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