Colorado County Map with Cities — All 64 Counties
All 64 of Colorado's counties, mapped from official U.S. Census boundaries with population, income, and unemployment for every one. Color the map by any measure, tap a county for its data, or download a print-ready copy.
Colorado CountiesFIPS 08
Albers Equal Area ConicDatum WGS 84Census PEP V2025 · Census SAIPE 2024 · BLS LAUS September 2026, preliminary · Census TIGER 2026
CountyAtlasEdition
Color counties by
Tap any county for its population, income, and more.
Colorado at a glance
- Scale. Colorado is divided into 64 counties across 103,637 sq mi of land, an average of 1,619 sq mi each. calculated from Census TIGER 2026
- People. Its counties are home to 6,012,561 residents. That averages 93,946 each, or 58 per square mile statewide. calculated from Census PEP V2025 · Census TIGER 2026
- Water. Another 458 sq mi is water, or 0.4% of the state’s area. Larimer County has the most. calculated from Census TIGER 2026
Colorado’s 64 counties, by the numbers
The table lists every county’s population, median household income, unemployment, density, and land area. Sort it by any column to find yours or rank them. A few patterns stand out:
- Concentrated. Half of Colorado’s 6,012,561 residents live in just 5 of 64 counties, and the 5 largest hold 55.0% of the total. calculated from Census PEP V2025
- Income tracks poverty. The gap from richest to poorest runs 3.5×, and the 10 highest-income counties average 6.8% in poverty against 22.4% for the 10 lowest. calculated from Census SAIPE 2024
- The median county. Half of Colorado’s counties have fewer than 15,444 residents, and half report a median household income below $73,324. calculated from Census PEP V2025 · Census SAIPE 2024
- Lopsided density. Only 11 of 64 counties are denser than Colorado’s statewide average of 58 people per square mile. calculated from Census PEP V2025 · Census TIGER 2026
| Adams County | 554,668 | $100,686 | 4.6% | 475/sq mi | 1,167 sq mi | Brighton |
| Alamosa County | 16,688 | $54,737 | 5.1% | 23/sq mi | 723 sq mi | Alamosa |
| Arapahoe County | 673,820 | $103,442 | 4.3% | 845/sq mi | 798 sq mi | Littleton |
| Archuleta County | 14,306 | $77,215 | 4.0% | 11/sq mi | 1,350 sq mi | Pagosa Springs |
| Baca County | 3,347 | $51,533 | 3.3% | 1/sq mi | 2,555 sq mi | Springfield |
| Bent County | 5,716 | $46,898 | 4.9% | 4/sq mi | 1,513 sq mi | Las Animas |
| Boulder County | 328,560 | $103,293 | 4.4% | 452/sq mi | 726 sq mi | Boulder |
| Broomfield County | 79,174 | $124,435 | 4.2% | 2,401/sq mi | 33 sq mi | No separate seat. Broomfield is a consolidated city and county. |
| Chaffee County | 20,831 | $89,591 | 3.9% | 21/sq mi | 1,013 sq mi | Salida |
| Cheyenne County | 1,713 | $70,475 | 2.7% | 1/sq mi | 1,778 sq mi | Cheyenne Wells |
| Clear Creek County | 8,994 | $94,796 | 3.9% | 23/sq mi | 395 sq mi | Georgetown |
| Conejos County | 7,529 | $53,781 | 4.2% | 6/sq mi | 1,287 sq mi | Conejos |
| Costilla County | 3,679 | $43,575 | 7.3% | 3/sq mi | 1,228 sq mi | San Luis |
| Crowley County | 5,677 | $44,379 | 4.2% | 7/sq mi | 787 sq mi | Ordway |
| Custer County | 5,590 | $71,090 | 4.1% | 8/sq mi | 739 sq mi | Westcliffe |
| Delta County | 32,178 | $60,514 | 5.9% | 28/sq mi | 1,142 sq mi | Delta |
| Denver County | 740,613 | $92,395 | 4.4% | 4,838/sq mi | 153 sq mi | Denver |
| Dolores County | 2,466 | $61,951 | 4.9% | 2/sq mi | 1,067 sq mi | Dove Creek |
| Douglas County | 399,396 | $152,657 | 4.0% | 475/sq mi | 840 sq mi | Castle Rock |
| Eagle County | 54,291 | $111,517 | 3.4% | 32/sq mi | 1,684 sq mi | Eagle |
| El Paso County | 757,040 | $90,778 | 4.6% | 356/sq mi | 2,126 sq mi | Colorado Springs |
| Elbert County | 30,534 | $128,776 | 3.9% | 16/sq mi | 1,851 sq mi | Kiowa |
| Fremont County | 50,039 | $63,195 | 5.8% | 33/sq mi | 1,534 sq mi | Cañon City |
| Garfield County | 63,474 | $91,858 | 3.5% | 22/sq mi | 2,947 sq mi | Glenwood Springs |
| Gilpin County | 6,073 | $96,815 | 3.7% | 40/sq mi | 150 sq mi | Central City |
| Grand County | 16,496 | $91,454 | 3.4% | 9/sq mi | 1,847 sq mi | Hot Sulphur Springs |
| Gunnison County | 17,439 | $79,949 | 3.6% | 5/sq mi | 3,239 sq mi | Gunnison |
| Hinsdale County | 753 | $74,437 | 3.9% | 1/sq mi | 1,117 sq mi | Lake City |
| Huerfano County | 7,011 | $48,817 | 7.0% | 4/sq mi | 1,591 sq mi | Walsenburg |
| Jackson County | 1,211 | $68,455 | 3.4% | 1/sq mi | 1,614 sq mi | Walden |
| Jefferson County | 580,451 | $109,969 | 4.1% | 759/sq mi | 764 sq mi | Golden |
| Kiowa County | 1,412 | $62,052 | 3.5% | 1/sq mi | 1,768 sq mi | Eads |
| Kit Carson County | 7,069 | $62,258 | 2.9% | 3/sq mi | 2,161 sq mi | Burlington |
| La Plata County | 56,898 | $88,759 | 3.9% | 34/sq mi | 1,690 sq mi | Durango |
| Lake County | 7,552 | $76,314 | 3.8% | 20/sq mi | 377 sq mi | Leadville |
| Larimer County | 377,292 | $93,518 | 4.2% | 145/sq mi | 2,596 sq mi | Fort Collins |
| Las Animas County | 14,391 | $51,562 | 6.4% | 3/sq mi | 4,773 sq mi | Trinidad |
| Lincoln County | 5,645 | $60,865 | 5.0% | 2/sq mi | 2,578 sq mi | Hugo |
| Logan County | 20,654 | $64,710 | 3.9% | 11/sq mi | 1,839 sq mi | Sterling |
| Mesa County | 162,845 | $73,997 | 4.4% | 49/sq mi | 3,329 sq mi | Grand Junction |
| Mineral County | 910 | $76,933 | 4.3% | 1/sq mi | 876 sq mi | City of Creede |
| Moffat County | 13,122 | $74,252 | 4.8% | 3/sq mi | 4,743 sq mi | Craig |
| Montezuma County | 26,678 | $66,611 | 5.1% | 13/sq mi | 2,029 sq mi | Cortez |
| Montrose County | 44,591 | $72,338 | 4.4% | 20/sq mi | 2,241 sq mi | Montrose |
| Morgan County | 30,306 | $69,828 | 4.8% | 24/sq mi | 1,280 sq mi | Fort Morgan |
| Otero County | 17,683 | $51,225 | 6.3% | 14/sq mi | 1,262 sq mi | La Junta |
| Ouray County | 5,265 | $98,611 | 4.0% | 10/sq mi | 541 sq mi | Ouray |
| Park County | 18,314 | $98,187 | 4.3% | 8/sq mi | 2,194 sq mi | Fairplay |
| Phillips County | 4,420 | $64,166 | 3.0% | 6/sq mi | 688 sq mi | Holyoke |
| Pitkin County | 16,625 | $119,658 | 3.4% | 17/sq mi | 971 sq mi | Aspen |
| Prowers County | 11,884 | $53,748 | 4.7% | 7/sq mi | 1,638 sq mi | Lamar |
| Pueblo County | 169,277 | $62,186 | 6.1% | 71/sq mi | 2,387 sq mi | Pueblo |
| Rio Blanco County | 6,683 | $72,651 | 4.5% | 2/sq mi | 3,221 sq mi | Meeker |
| Rio Grande County | 11,087 | $59,812 | 4.7% | 12/sq mi | 912 sq mi | Del Norte |
| Routt County | 25,329 | $112,777 | 3.9% | 11/sq mi | 2,362 sq mi | Steamboat Springs |
| Saguache County | 6,732 | $48,755 | 4.6% | 2/sq mi | 3,169 sq mi | Saguache |
| San Juan County | 813 | $65,231 | 3.3% | 2/sq mi | 388 sq mi | Silverton |
| San Miguel County | 7,753 | $108,571 | 3.3% | 6/sq mi | 1,287 sq mi | Telluride |
| Sedgwick County | 2,247 | $51,589 | 3.9% | 4/sq mi | 548 sq mi | Julesburg |
| Summit County | 31,517 | $118,690 | 3.9% | 52/sq mi | 608 sq mi | Breckenridge |
| Teller County | 24,756 | $87,171 | 4.2% | 44/sq mi | 557 sq mi | Cripple Creek |
| Washington County | 4,732 | $64,985 | 3.8% | 2/sq mi | 2,518 sq mi | Akron |
| Weld County | 378,426 | $100,638 | 4.7% | 95/sq mi | 3,985 sq mi | Greeley |
| Yuma County | 9,896 | $60,621 | 2.9% | 4/sq mi | 2,364 sq mi | Wray |
Click a column heading to sort all 64 counties. A suppressed estimate (coefficient of variation ≥ 0.30) shows a marker, never a guess. County seats are from Wikidata (CC0), each validated to a Census place inside its county. Where Wikidata has none, the seat comes from the page cited for that county in the seat file, and where the table names no seat, it says why. See the methodology.
Download & print this Colorado map
Colorado maps, colored by the data
Cities in Colorado
Colorado has 273 incorporated cities and towns. The largest is Denver in Denver County with 718,877 residents. Use the search on the map above to find any city and highlight the county it sits in.
| Denver | Denver County | 718,877 |
| Colorado Springs | El Paso County | 487,887 |
| Aurora | Arapahoe County +2 more (also Adams County, Douglas County) | 394,432 |
| Fort Collins | Larimer County | 170,229 |
| Lakewood | Jefferson County | 156,583 |
| Thornton | Adams County +1 more (also Weld County) | 144,187 |
| Arvada | Jefferson County +1 more (also Adams County) | 122,634 |
| Westminster | Jefferson County +1 more (also Adams County) | 115,484 |
| Pueblo | Pueblo County | 111,561 |
| Greeley | Weld County | 110,806 |
| Centennial | Arapahoe County | 108,201 |
| Boulder | Boulder County | 106,433 |
| Longmont | Boulder County +1 more (also Weld County) | 99,406 |
| Castle Rock (town) | Douglas County | 79,123 |
| Loveland | Larimer County | 78,410 |
| Broomfield | Broomfield County | 76,304 |
| Grand Junction | Mesa County | 68,142 |
| Commerce City | Adams County | 66,445 |
| Parker (town) | Douglas County | 61,783 |
| Littleton | Arapahoe County +2 more (also Jefferson County, Douglas County) | 44,710 |
| Brighton | Adams County +1 more (also Weld County) | 42,059 |
| Northglenn | Adams County +1 more (also Weld County) | 38,014 |
| Windsor (town) | Weld County +1 more (also Larimer County) | 37,914 |
| Englewood | Arapahoe County | 34,129 |
| Erie (town) | Weld County +1 more (also Boulder County) | 33,808 |
| Wheat Ridge | Jefferson County | 32,070 |
| Lafayette | Boulder County | 30,602 |
| Fountain | El Paso County | 29,300 |
| Evans | Weld County | 22,396 |
| Montrose | Montrose County | 21,044 |
| Louisville | Boulder County | 20,786 |
| Golden | Jefferson County | 20,417 |
| Durango | La Plata County | 19,411 |
| Johnstown (town) | Weld County +1 more (also Larimer County) | 18,883 |
| Firestone (town) | Weld County | 18,049 |
| Cañon City | Fremont County | 17,122 |
| Frederick (town) | Weld County | 16,651 |
| Greenwood Village | Arapahoe County | 15,420 |
| Lone Tree | Douglas County | 14,147 |
| Federal Heights | Adams County | 14,125 |
| Fruita | Mesa County | 13,691 |
| Steamboat Springs | Routt County | 13,433 |
| Castle Pines | Douglas County | 13,388 |
| Superior (town) | Boulder County +1 more (also Jefferson County) | 13,305 |
| Sterling | Logan County | 13,172 |
| Berthoud (town) | Weld County +1 more (also Larimer County) | 12,411 |
| Wellington (town) | Larimer County | 11,798 |
| Monument (town) | El Paso County | 11,735 |
| Fort Morgan | Morgan County | 11,605 |
| Rifle | Garfield County | 10,570 |
The table shows the 50 most populous. Search the map above for the other 223.
A city can reach into more than one county. The table names the one its center falls in; “+N more” counts the others, from the Census Bureau’s count of each city by county part Census ACS 2020–2024 place parts.
Which Colorado county is the richest, largest, most crowded? The answers
- Colorado’s highest median household income is in Douglas County ($152,657); the lowest is in Costilla County ($43,575). Census SAIPE 2024
- Colorado’s most populous county is El Paso County (757,040); the least populous is Hinsdale County (753), a 1,005× spread. calculated from Census PEP V2025
- Colorado’s largest county by land area is Las Animas County (4,773 sq mi); the smallest is Broomfield County (33 sq mi). Census TIGER 2026
- Colorado’s highest population density is in Denver County (4,838/sq mi); the lowest is in Hinsdale County (1/sq mi). calculated from Census PEP V2025 · Census TIGER 2026
- Colorado’s highest poverty rate is in Crowley County (39.0%); the lowest is in Douglas County (4.3%). Census SAIPE 2024
- In Colorado, unemployment is highest in Costilla County (7.3%) and lowest in Cheyenne County (2.7%), for September 2026 (preliminary). BLS LAUS September 2026, preliminary
- Colorado’s highest median age is in Custer County (58.2); the lowest is in Alamosa County (33.2). Census ACS 2020–2024
- Colorado’s highest share of adults 25 and over with a bachelor’s degree or higher is in San Miguel County (64.9%); the lowest is in Crowley County (12.4%). Census ACS 2020–2024
Every figure is a current official estimate from the source named, never a crowd-sourced or copied value. Suppressed estimates (coefficient of variation ≥ 0.30) are omitted, never guessed. See the full methodology.
Colorado counties: common questions
How many counties are in Colorado?
Colorado has 64 counties covering 103,637 sq mi and about 6.0M residents. Every one is on the map and in the table above.
What is the largest county in Colorado?
It depends on the measure. By land area it’s Las Animas County (4,773 sq mi); by population it’s El Paso County (757,040 residents).
What county is Denver in?
Denver, population 718,877, is in Denver County. Use the search on the map to find any Colorado city’s county.
What is the richest county in Colorado?
By median household income, Douglas County is the richest at $152,657; the poorest is Costilla County at $43,575. Census SAIPE 2024
What is the most populous county in Colorado?
El Paso County, with 757,040 residents, about 12.6% of Colorado’s people. That is 1,005× the least populous, Hinsdale County (753).
Sources & vintages
- Source: U.S. Census Bureau, Population Estimates, Vintage 2025 (July 1, 2025) — retrieved Nov 2026
- Source: U.S. Census Bureau, Small Area Income and Poverty Estimates (SAIPE), 2024 — retrieved Nov 2026
- Source: U.S. Census Bureau, American Community Survey 5-year estimates 2020–2024, B01002 median age — retrieved Nov 2026
- Source: U.S. Census Bureau, American Community Survey 5-year estimates 2020–2024, S1501 educational attainment — retrieved Nov 2026
- Source: U.S. Bureau of Labor Statistics, Local Area Unemployment Statistics (LAUS), September 2026, preliminary — retrieved Nov 2026
- Source: U.S. Census Bureau, TIGERweb county boundaries, January 1, 2026 vintage — retrieved Nov 2026
- Source: U.S. Census Bureau, TIGERweb incorporated places, January 1, 2026 vintage — retrieved Nov 2026
- Source: U.S. Census Bureau, American Community Survey 5-year estimates 2020–2024, B01003 total population by place — retrieved Nov 2026
- Source: Wikidata, county seats (P36), query of 2026-11-11 — retrieved Nov 2026
- Source: County, state and Census sources, seats and no-seat reasons for 92 county-equivalents (3 rows cite the Virginia Association of Counties) — retrieved Nov 2026
- Calculated: population density = population ÷ land area (people per sq mi) (method)
- Calculated: state totals = sum over the state’s counties (population, land area, water area) (method)
- Calculated: averages per county = state total ÷ number of counties (method)
- Calculated: population shares = county (or top-5) population ÷ state total × 100; “half the residents” = fewest largest counties whose populations sum to ≥ 50% of the total (method)
- Calculated: medians across counties = middle value of the county values (mean of the two middle values for an even count) (method)
- Calculated: spreads = highest county value ÷ lowest county value (method)
- Calculated: income tiers vs poverty = mean poverty rate of the N highest- and N lowest-income counties, N = min(10, ⌊counties ÷ 2⌋), only for states with ≥ 6 counties (method)
- Calculated: rankings and superlatives = highest / lowest county value; suppressed values excluded (method)
- Calculated: water share = water area ÷ (land area + water area) × 100 (method)
- Calculated: square miles = TIGER AREALAND or AREAWATER (m²) ÷ 2,589,988.11, rounded to 2 dp (method)
Data current through .