Colorado County Map With Cities
By Marko Visic · Updated Oct 5, 2026
Colorado has 64 counties, covering 103,637 square miles of land. The Census Bureau estimates its population at 6,012,561 as of July 1, 2025. The largest county by land area is Las Animas County; the most populous is El Paso County; the least populous is Hinsdale County.
Tap or click any county for details. Need a printable version? Blank Colorado map (PDF/PNG/SVG).
All 64 Colorado counties
| County | FIPS code | Population (July 1, 2025) ▼ | Change since April 2020 | Land area (sq mi) | People per sq mi | Median household income (2020–2024) |
|---|---|---|---|---|---|---|
| El Paso County | 08041 | 757,040 | +3.5% | 2,126 | 356 | $90,363 |
| Denver County | 08031 | 740,613 | +3.5% | 153 | 4,838 | $94,718 |
| Arapahoe County | 08005 | 673,820 | +2.9% | 798 | 845 | $101,087 |
| Jefferson County | 08059 | 580,451 | -0.4% | 764 | 759 | $110,656 |
| Adams County | 08001 | 554,668 | +6.8% | 1,167 | 475 | $94,571 |
| Douglas County | 08035 | 399,396 | +11.6% | 840 | 475 | $149,594 |
| Weld County | 08123 | 378,426 | +15.0% | 3,985 | 95 | $97,097 |
| Larimer County | 08069 | 377,292 | +5.1% | 2,596 | 145 | $93,765 |
| Boulder County | 08013 | 328,560 | -0.7% | 726 | 452 | $103,994 |
| Pueblo County | 08101 | 169,277 | +0.7% | 2,387 | 71 | $64,010 |
| Mesa County | 08077 | 162,845 | +4.6% | 3,329 | 49 | $73,658 |
| Broomfield County | 08014 | 79,174 | +6.8% | 33 | 2,402 | $123,874 |
| Garfield County | 08045 | 63,474 | +2.9% | 2,947 | 22 | $91,131 |
| La Plata County | 08067 | 56,898 | +2.3% | 1,690 | 34 | $86,056 |
| Eagle County | 08037 | 54,291 | -2.6% | 1,684 | 32 | $104,096 |
| Fremont County | 08043 | 50,039 | +2.3% | 1,534 | 33 | $62,664 |
| Montrose County | 08085 | 44,591 | +4.5% | 2,241 | 20 | $72,120 |
| Delta County | 08029 | 32,178 | +3.1% | 1,142 | 28 | $57,774 |
| Summit County | 08117 | 31,517 | +0.7% | 608 | 52 | $109,773 |
| Elbert County | 08039 | 30,534 | +17.2% | 1,851 | 16 | $132,685 |
| Morgan County | 08087 | 30,306 | +4.1% | 1,280 | 24 | $73,278 |
| Montezuma County | 08083 | 26,678 | +3.2% | 2,029 | 13 | $65,244 |
| Routt County | 08107 | 25,329 | +2.0% | 2,362 | 11 | $106,489 |
| Teller County | 08119 | 24,756 | +0.2% | 557 | 44 | $85,361 |
| Chaffee County | 08015 | 20,831 | +7.0% | 1,013 | 21 | $84,132 |
| Logan County | 08075 | 20,654 | -4.1% | 1,839 | 11 | $51,829 |
| Park County | 08093 | 18,314 | +5.3% | 2,194 | 8 | $103,670 |
| Otero County | 08089 | 17,683 | -5.4% | 1,262 | 14 | $54,037 |
| Gunnison County | 08051 | 17,439 | +3.1% | 3,239 | 5 | $84,527 |
| Alamosa County | 08003 | 16,688 | +1.9% | 723 | 23 | $55,397 |
| Pitkin County | 08097 | 16,625 | -4.2% | 971 | 17 | $102,645 |
| Grand County | 08049 | 16,496 | +5.0% | 1,847 | 9 | $88,612 |
| Las Animas County | 08071 | 14,391 | -1.1% | 4,773 | 3 | $52,074 |
| Archuleta County | 08007 | 14,306 | +7.1% | 1,350 | 11 | $83,065 |
| Moffat County | 08081 | 13,122 | -1.3% | 4,743 | 3 | $73,849 |
| Prowers County | 08099 | 11,884 | -0.9% | 1,638 | 7 | $53,508 |
| Rio Grande County | 08105 | 11,087 | -3.9% | 912 | 12 | $64,411 |
| Yuma County | 08125 | 9,896 | -0.9% | 2,364 | 4 | $60,545 |
| Clear Creek County | 08019 | 8,994 | -4.0% | 395 | 23 | $94,577 |
| San Miguel County | 08113 | 7,753 | -3.9% | 1,287 | 6 | $79,024 |
| Lake County | 08065 | 7,552 | +1.6% | 377 | 20 | $96,575 |
| Conejos County | 08021 | 7,529 | +0.9% | 1,287 | 6 | $50,978 |
| Kit Carson County | 08063 | 7,069 | -0.2% | 2,161 | 3 | $70,259 |
| Huerfano County | 08055 | 7,011 | +2.9% | 1,591 | 4 | $52,526 |
| Saguache County | 08109 | 6,732 | +5.6% | 3,169 | 2 | $50,082 |
| Rio Blanco County | 08103 | 6,683 | +2.4% | 3,221 | 2 | $65,473 |
| Gilpin County | 08047 | 6,073 | +4.7% | 150 | 40 | $95,361 |
| Bent County | 08011 | 5,716 | +1.3% | 1,513 | 4 | $50,179 |
| Crowley County | 08025 | 5,677 | -4.2% | 787 | 7 | $48,826 |
| Lincoln County | 08073 | 5,645 | -0.6% | 2,578 | 2 | $62,861 |
| Custer County | 08027 | 5,590 | +18.8% | 739 | 8 | $72,674 |
| Ouray County | 08091 | 5,265 | +7.9% | 541 | 10 | $91,020 |
| Washington County | 08121 | 4,732 | -1.7% | 2,518 | 2 | $67,167 |
| Phillips County | 08095 | 4,420 | -2.5% | 688 | 6 | $64,674 |
| Costilla County | 08023 | 3,679 | +5.3% | 1,228 | 3 | $36,861 |
| Baca County | 08009 | 3,347 | -4.5% | 2,555 | 1 | $46,215 |
| Dolores County | 08033 | 2,466 | +6.1% | 1,067 | 2 | $64,907 |
| Sedgwick County | 08115 | 2,247 | -6.5% | 548 | 4 | $52,386 |
| Cheyenne County | 08017 | 1,713 | -2.1% | 1,778 | 1 | $70,865 |
| Kiowa County | 08061 | 1,412 | -2.4% | 1,768 | 1 | $58,618 |
| Jackson County | 08057 | 1,211 | -12.2% | 1,614 | 1 | $47,667 |
| Mineral County | 08079 | 910 | +5.2% | 876 | 1 | $56,250 |
| San Juan County | 08111 | 813 | +15.5% | 388 | 2 | $77,824 |
| Hinsdale County | 08053 | 753 | -4.0% | 1,117 | 1 | $75,972 |
FIPS code: the Census Bureau’s five-digit county ID, a two-digit state code plus a three-digit county code. It is not a ZIP code.
How many counties does Colorado have?
Colorado has 64 counties covering 103,637 square miles. The state was admitted to the Union in 1876 as the 38th state.
The largest county by land area is Las Animas County at 4,773 square miles, home to 14,391 residents. The most populous is El Paso County with 757,040 residents — a density of 356 people per square mile. At the other end of the scale, Hinsdale County has 753 residents.
Denver is both the state capital and the largest city in Colorado.
Related resources
Download a printable outline of Colorado’s county boundaries from our blank map of Colorado page — available in SVG, PNG, and PDF.
Use the What County Am I In? tool to detect which Colorado county a GPS location or address falls in, or the Address to County Lookup for batch input.
For demographic radius analysis, the Find ZIP Codes in Radius and Population Within Radius tools let you draw a circle around any Colorado address and see every ZIP code and the total population inside.
Two SimpleMapLab studies cover Colorado specifically: the 100-mile radius around Denver measures how much of the state lives within 100 miles of its capitol, and the loneliest town in Colorado ranks the state’s most isolated inhabited place. The county-counts blog post puts Colorado’s 64 counties in national context.
Frequently asked questions
- County Population Totals, Vintage 2025: estimates for July 1, 2025, released March 2026
- Gazetteer Files, 2026: county land and water area
- American Community Survey 5-Year Estimates, 2020–2024: median household income (table B19013)
- County boundaries on the map: US Atlas TopoJSON build of the US Census Bureau’s TIGER/Line shapefiles. All figures are US Census Bureau data in the public domain.