Blank map of Colorado by county
All 64 counties of Colorado, ready to print on Letter, Tabloid, A4 or A3, or to download as PNG and SVG. Free, no sign-up.
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Mapsfera · data US Census Bureau
Colorado on the map
Colorado has 64 counties, the 24th most of any state (tied with one other). The largest is Las Animas, with 4,773 sq mi of land, and the smallest is Broomfield, with 33 sq mi: Las Animas is about 145 times bigger.
The state capital, Denver, is in Denver County. The capital version marks it on the map.
El Paso County is the most populous, with 757,040 people in 2025, or 13% of the state. The least populous is Hinsdale, with 753. Since 2020, Custer has grown the fastest (+18.8%) and Jackson has lost the most (−12.2%).
What each county borders
Jefferson borders the most counties in the state: 9 (Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver, Douglas, Gilpin, and Park).
26 counties touch another state. 8 border Utah: Dolores, Garfield, Mesa, Moffat, Montezuma, Montrose, Rio Blanco, and San Miguel. 7 border New Mexico: Archuleta, Baca, Conejos, Costilla, La Plata, Las Animas, and Montezuma. 6 border Kansas: Baca, Cheyenne, Kiowa, Kit Carson, Prowers, and Yuma. 5 border Wyoming: Jackson, Larimer, Moffat, Routt, and Weld. 5 border Nebraska: Logan, Phillips, Sedgwick, Weld, and Yuma. Only Baca borders Oklahoma.
None has a coastline: Colorado is landlocked.
Number key
Numbers follow alphabetical order, from 1 (Adams) to 64 (Yuma). Broomfield is too small for a number on Letter or A4 but keeps its number in the table; Tabloid and A3 fit more. Area is land area, without lakes or sea, and population is the Census estimate for July 1, 2025; “Borders” counts neighboring counties in the same state.
Show the whole table (64 rows)
| No. | County | Land area | Population (2025) | Borders |
|---|---|---|---|---|
| 1 | Adams | 1,167 sq mi | 554,668 | 7 |
| 2 | Alamosa | 723 sq mi | 16,688 | 5 |
| 3 | Arapahoe | 798 sq mi | 673,820 | 7 |
| 4 | Archuleta | 1,350 sq mi | 14,306 | 5 |
| 5 | Baca | 2,555 sq mi | 3,347 | 3 |
| 6 | Bent | 1,513 sq mi | 5,716 | 5 |
| 7 | Boulder | 726 sq mi | 328,560 | 6 |
| 8 | Broomfield | 33 sq mi | 79,174 | 4 |
| 9 | Chaffee | 1,013 sq mi | 20,831 | 6 |
| 10 | Cheyenne | 1,778 sq mi | 1,713 | 3 |
| 11 | Clear Creek | 395 sq mi | 8,994 | 5 |
| 12 | Conejos | 1,287 sq mi | 7,529 | 4 |
| 13 | Costilla | 1,228 sq mi | 3,679 | 4 |
| 14 | Crowley | 787 sq mi | 5,677 | 4 |
| 15 | Custer | 739 sq mi | 5,590 | 4 |
| 16 | Delta | 1,142 sq mi | 32,178 | 3 |
| 17 | Denver | 153 sq mi | 740,613 | 3 |
| 18 | Dolores | 1,067 sq mi | 2,466 | 3 |
| 19 | Douglas | 841 sq mi | 399,396 | 5 |
| 20 | Eagle | 1,684 sq mi | 54,291 | 6 |
| 21 | El Paso | 2,126 sq mi | 757,040 | 6 |
| 22 | Elbert | 1,850 sq mi | 30,534 | 4 |
| 23 | Fremont | 1,534 sq mi | 50,039 | 7 |
| 24 | Garfield | 2,947 sq mi | 63,474 | 5 |
| 25 | Gilpin | 150 sq mi | 6,073 | 4 |
| 26 | Grand | 1,847 sq mi | 16,496 | 8 |
| 27 | Gunnison | 3,239 sq mi | 17,439 | 8 |
| 28 | Hinsdale | 1,117 sq mi | 753 | 7 |
| 29 | Huerfano | 1,591 sq mi | 7,011 | 6 |
| 30 | Jackson | 1,614 sq mi | 1,211 | 3 |
| 31 | Jefferson | 764 sq mi | 580,451 | 9 |
| 32 | Kiowa | 1,768 sq mi | 1,412 | 6 |
| 33 | Kit Carson | 2,161 sq mi | 7,069 | 4 |
| 34 | La Plata | 1,690 sq mi | 56,898 | 4 |
| 35 | Lake | 377 sq mi | 7,552 | 5 |
| 36 | Larimer | 2,596 sq mi | 377,292 | 4 |
| 37 | Las Animas | 4,773 sq mi | 14,391 | 6 |
| 38 | Lincoln | 2,578 sq mi | 5,645 | 8 |
| 39 | Logan | 1,839 sq mi | 20,654 | 6 |
| 40 | Mesa | 3,329 sq mi | 162,845 | 5 |
| 41 | Mineral | 876 sq mi | 910 | 4 |
| 42 | Moffat | 4,743 sq mi | 13,122 | 2 |
| 43 | Montezuma | 2,029 sq mi | 26,678 | 2 |
| 44 | Montrose | 2,241 sq mi | 44,591 | 5 |
| 45 | Morgan | 1,281 sq mi | 30,306 | 4 |
| 46 | Otero | 1,262 sq mi | 17,683 | 5 |
| 47 | Ouray | 541 sq mi | 5,265 | 5 |
| 48 | Park | 2,194 sq mi | 18,314 | 7 |
| 49 | Phillips | 688 sq mi | 4,420 | 3 |
| 50 | Pitkin | 971 sq mi | 16,625 | 6 |
| 51 | Prowers | 1,638 sq mi | 11,884 | 3 |
| 52 | Pueblo | 2,387 sq mi | 169,277 | 7 |
| 53 | Rio Blanco | 3,221 sq mi | 6,683 | 3 |
| 54 | Rio Grande | 912 sq mi | 11,087 | 5 |
| 55 | Routt | 2,362 sq mi | 25,329 | 6 |
| 56 | Saguache | 3,169 sq mi | 6,732 | 9 |
| 57 | San Juan | 388 sq mi | 813 | 5 |
| 58 | San Miguel | 1,287 sq mi | 7,753 | 4 |
| 59 | Sedgwick | 548 sq mi | 2,247 | 2 |
| 60 | Summit | 608 sq mi | 31,517 | 5 |
| 61 | Teller | 557 sq mi | 24,756 | 4 |
| 62 | Washington | 2,518 sq mi | 4,732 | 7 |
| 63 | Weld | 3,985 sq mi | 378,426 | 6 |
| 64 | Yuma | 2,364 sq mi | 9,896 | 4 |
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Frequently asked questions
How many counties does Colorado have?
64 counties. That’s the 24th most of any state.
What is the largest county in Colorado?
Las Animas, with 4,773 sq mi of land. The smallest is Broomfield, with 33 sq mi.
What is the most populous county in Colorado?
El Paso County, with an estimated 757,040 people in 2025, or 13% of the state.
What county is Denver in?
The state capital, Denver, is in Denver County.
Can I use it in class?
Yes, it’s free. Print it, copy it and hand it out as many times as you like. If you post it on a blog or a class website, credit “Mapsfera · data US Census Bureau”.
How do I print it on US Letter paper?
Choose Letter in “Paper size” and click “Download PDF”. In the print window, pick Letter paper and 100% scale (“Actual size”). For a bigger map, choose Tabloid (11 × 17 in) or A3.
What order are the numbers in?
Alphabetical, from 1 to the last one. That makes the key easy to follow when you grade, and it’s the same key the worksheet’s answer page uses.
Sources
- Boundaries: U.S. Census Bureau, Cartographic Boundary Files 2025, counties at 1:500,000 (public domain)
- Land and water area: U.S. Census Bureau (TIGER/Line and 2025 Gazetteer); population: Vintage 2025 estimates (July 1, 2025)
- State capital: Natural Earth, Populated Places (public domain); which counties it spans, Census places
- Neighbors, coastline and borders: calculated from those boundaries (and checked against the Census county adjacency file)