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Colorado county map

See all 64 counties on one clear, labelled map. Use the alphabetical table below to verify names and compare land area.

Boundary vintage: 2025Source: U.S. Census BureauUpdated September 15, 2026
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Labelled map of Colorado counties AdamsAlamosaArapahoeArchuletaBacaBentBoulderBroomfieldChaffeeCheyenneClear CreekConejosCostillaCrowleyCusterDeltaDenverDoloresDouglasEagleEl PasoElbertFremontGarfieldGilpinGrandGunnisonHinsdaleHuerfanoJacksonJeffersonKiowaKit CarsonLa PlataLakeLarimerLas AnimasLincolnLoganMesaMineralMoffatMontezumaMontroseMorganOteroOurayParkPhillipsPitkinProwersPuebloRio BlancoRio GrandeRouttSaguacheSan JuanSan MiguelSedgwickSummitTellerWashingtonWeldYuma
Boundary data: U.S. Census Bureau 2025 cartographic boundary files. Zoom in for county names, then drag the map or use the arrow keys to move around.
Map scope: This is a county boundary reference map. It does not show roads, parcels, ZIP codes, election precincts, or terrain.

Alphabetical list of Colorado counties

The land-area figures are rounded to the nearest square mile. Water area is shown separately so large lakes or coastal waters do not obscure the comparison.

NameFIPS codeLand areaWater area
Adams County080011,167 sq mi17 sq mi
Alamosa County08003723 sq mi1 sq mi
Arapahoe County08005798 sq mi8 sq mi
Archuleta County080071,350 sq mi5 sq mi
Baca County080092,555 sq mi2 sq mi
Bent County080111,513 sq mi28 sq mi
Boulder County08013726 sq mi14 sq mi
Broomfield County0801433 sq mi1 sq mi
Chaffee County080151,013 sq mi2 sq mi
Cheyenne County080171,778 sq mi3 sq mi
Clear Creek County08019395 sq mi1 sq mi
Conejos County080211,287 sq mi4 sq mi
Costilla County080231,228 sq mi3 sq mi
Crowley County08025787 sq mi13 sq mi
Custer County08027739 sq mi1 sq mi
Delta County080291,142 sq mi6 sq mi
Denver County08031153 sq mi2 sq mi
Dolores County080331,067 sq mi1 sq mi
Douglas County08035841 sq mi3 sq mi
Eagle County080371,684 sq mi7 sq mi
El Paso County080412,126 sq mi3 sq mi
Elbert County080391,850 sq mi0 sq mi
Fremont County080431,534 sq mi1 sq mi
Garfield County080452,947 sq mi8 sq mi
Gilpin County08047150 sq mi0 sq mi
Grand County080491,847 sq mi23 sq mi
Gunnison County080513,239 sq mi20 sq mi
Hinsdale County080531,117 sq mi6 sq mi
Huerfano County080551,591 sq mi2 sq mi
Jackson County080571,614 sq mi7 sq mi
Jefferson County08059764 sq mi10 sq mi
Kiowa County080611,768 sq mi18 sq mi
Kit Carson County080632,161 sq mi1 sq mi
La Plata County080671,690 sq mi10 sq mi
Lake County08065377 sq mi7 sq mi
Larimer County080692,596 sq mi38 sq mi
Las Animas County080714,773 sq mi3 sq mi
Lincoln County080732,578 sq mi9 sq mi
Logan County080751,839 sq mi6 sq mi
Mesa County080773,329 sq mi12 sq mi
Mineral County08079876 sq mi2 sq mi
Moffat County080814,743 sq mi8 sq mi
Montezuma County080832,029 sq mi11 sq mi
Montrose County080852,241 sq mi2 sq mi
Morgan County080871,280 sq mi13 sq mi
Otero County080891,262 sq mi8 sq mi
Ouray County08091541 sq mi2 sq mi
Park County080932,194 sq mi17 sq mi
Phillips County08095688 sq mi0 sq mi
Pitkin County08097971 sq mi2 sq mi
Prowers County080991,638 sq mi6 sq mi
Pueblo County081012,387 sq mi11 sq mi
Rio Blanco County081033,221 sq mi2 sq mi
Rio Grande County08105912 sq mi0 sq mi
Routt County081072,362 sq mi6 sq mi
Saguache County081093,169 sq mi2 sq mi
San Juan County08111388 sq mi1 sq mi
San Miguel County081131,287 sq mi2 sq mi
Sedgwick County08115548 sq mi1 sq mi
Summit County08117608 sq mi11 sq mi
Teller County08119557 sq mi2 sq mi
Washington County081212,518 sq mi6 sq mi
Weld County081233,985 sq mi32 sq mi
Yuma County081252,364 sq mi4 sq mi

Largest Colorado counties by land area

These are the five largest mapped units in Colorado by Census-reported land area:

  1. Las Animas County — 4,773 square miles
  2. Moffat County — 4,743 square miles
  3. Weld County — 3,985 square miles
  4. Mesa County — 3,329 square miles
  5. Gunnison County — 3,239 square miles

How to read and use this map

County lines are administrative boundaries, not postal routes. A mailing address can use a city name associated with a neighboring area, and ZIP codes can cross county lines. When you need to identify a county for an address, confirm it with an official geocoder or local government source.

For classroom or planning use, print directly from this page. If labels become crowded, choose landscape orientation and reduce page margins. The underlying vector lines remain crisp at different sizes.

Frequently asked questions

How many counties are in Colorado?

Colorado has 64 counties in the U.S. Census Bureau’s 2025 cartographic boundary file.

Can I print this Colorado county map?

Yes. Choose Print map and use landscape orientation for the widest map. Because the map is SVG, its boundary lines stay sharp when scaled.

Are these legal survey boundaries?

No. This is a generalized reference map. Property, parcel, election, and legal boundary questions should be checked with the relevant state or local agency.

Map source

U.S. Census Bureau, 2025 Cartographic Boundary File, Counties, 1:20,000,000. Land and water area fields are supplied in the same file and converted from square meters to square miles. Accessed September 15, 2026.