Colorado city quiz
Name every city and town in Colorado on a blank map. 273 incorporated cities and towns and 209 unincorporated communities, each with its real boundary. Type a name and its borders fill in on a street map that has highways and parks but no place names.
Largest cities in Colorado
| # | City | Population | Land area (sq mi) | People per sq mi |
|---|---|---|---|---|
| 1 | Denver | 740,613 | 153.1 | 4,838 |
| 2 | Colorado Springs | 494,743 | 202.2 | 2,446 |
| 3 | Aurora | 410,053 | 164.1 | 2,498 |
| 4 | Fort Collins | 171,500 | 57.2 | 2,996 |
| 5 | Lakewood | 156,927 | 43.5 | 3,608 |
| 6 | Thornton | 147,766 | 36.6 | 4,032 |
| 7 | Arvada | 122,901 | 39.0 | 3,151 |
| 8 | Westminster | 116,182 | 31.6 | 3,673 |
| 9 | Greeley | 115,073 | 50.6 | 2,274 |
| 10 | Pueblo | 110,404 | 56.6 | 1,950 |
Population: Census Bureau July 2025 estimates. Land area: 2025 Census boundaries.
Largest unincorporated communities
Highlands Ranch (103,444), Security-Widefield (38,639), Dakota Ridge (33,892), Ken Caryl (33,811), and Pueblo West (33,086). Communities count in the quiz unless you switch them off in Options.
Metro quizzes in Colorado
Questions
How many cities are in Colorado?
The Census Bureau’s 2025 boundary files list 273 incorporated places in Colorado: 75 cities and 198 towns. There are also 209 unincorporated communities (census-designated places), which this quiz includes unless you switch them off. That makes 482 places to find in total.
What is the largest city in Colorado?
By population, Denver, with 740,613 people (July 2025 estimate). By land area, Colorado Springs, at 202.2 square miles.
What is the most densely populated city in Colorado?
Among places with at least 10,000 people, Federal Heights is the densest, with about 7,952 people per square mile on 1.77 square miles of land.
What is the smallest town in Colorado?
By population, Carbonate, with 0 people (July 2025 estimate).
How does the Colorado city quiz work?
Type a city, town or community and press Enter. If it is in the quiz, its real boundary fills in green on a blank street map that has highways, parks and water but no place names. A name shared by several places, like Springfield, fills in all of them at once. Hover a found city to see its population, land area and density, ranked within its state.
Is it free?
Yes. Every US quiz is free. Sign in with your email to save progress across devices and appear on the leaderboards.