Mesa County, Colorado

County seat: Grand Junction · Population 162,845 (2025) · 3,329 sq mi

Mesa County is the 11th most populous of Colorado's 64 counties, with 162,845 people (2025 estimate). Its county seat is Grand Junction. It is part of the Region 11: Northern Western Slope region, one of the 14 Planning and Management Regions of Colorado. The map shows its 5 cities and towns and the 7 neighboring counties.

Map of Mesa County, Colorado with cities, towns and the county boundary
Mesa County, Colorado with its cities and towns, unincorporated communities (CDPs) and neighboring counties. Boundaries: U.S. Census Bureau, 2025. Free to use with attribution (CC BY 4.0).

Mesa County facts

County seat
Grand Junction
Population (2025 estimate)
162,845 +4.6% since 2020
Land area
3,329 sq mi 4th largest of 64
Water area
12 sq mi
Population density
49 per sq mi
Established
1883
Largest city
Grand Junction 71,827
Median household income
$73,658
Cities and towns
5 plus 5 CDPs
ZIP codes
19
Time zone
Mountain
FIPS code
08077

Cities and towns in Mesa County

Mesa County has 5 incorporated cities, towns and villages. Populations count the people living inside Mesa County; cities that cross a county line also list the other counties.

NameTypePopulation 2025Also in
Grand Junction (county seat)City71,827
FruitaCity14,003
PalisadeTown2,599
De BequeTown476
CollbranTown355

Unincorporated communities (CDPs)

Census-designated places are communities without their own city government; the county provides their services.

CommunityPopulationAlso in
Clifton19,518
Redlands8,868
Fruitvale8,019
Orchard Mesa6,945
Loma1,350

ZIP codes in Mesa County

19 ZIP codes reach into Mesa County. ZIP codes ignore county lines, so some also cover a neighboring county.

Population of Mesa County, 2020–2025

Mesa County grew by 7,135 people (+4.6%) between April 2020 and July 2025: 1,738 more deaths than births and a net gain of 8,786 people from migration.

Year (July 1)Population
2020156,007
2021157,516
2022158,634
2023159,794
2024161,400
2025162,845

Neighboring counties

Printable Mesa County map

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Sources

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