Boulder County, Colorado cities by population
Number of cities: 34
Population: 328,713
Largest city: Boulder
| City | Type | Population |
|---|---|---|
| Boulder | city | 104,930 |
| Longmont | city | 98,789 |
| Lafayette | city | 30,307 |
| Erie | town | 29,367 |
| Louisville | city | 21,091 |
| Superior | town | 13,283 |
| Gunbarrel | CDP | 10,199 |
| Niwot | CDP | 4,216 |
| Coal Creek | CDP | 2,581 |
| Lyons | town | 2,261 |
| Nederland | town | 1,392 |
| Lazy Acres | CDP | 926 |
| Paragon Estates | CDP | 822 |
| Pine Brook Hill | CDP | 734 |
| Allenspark | CDP | 574 |
| Altona | CDP | 557 |
| St. Ann Highlands | CDP | 550 |
| Sugarloaf | CDP | 465 |
| Tall Timber | CDP | 457 |
| Eldora | CDP | 393 |
| Eldorado Springs | CDP | 295 |
| Jamestown | town | 281 |
| Gold Hill | CDP | 272 |
| Sunshine | CDP | 210 |
| Crisman | CDP | 163 |
| Mountain Meadows | CDP | 160 |
| Bonanza Mountain Estates | CDP | 148 |
| Seven Hills | CDP | 137 |
| Bark Ranch | CDP | 116 |
| Valmont | CDP | 93 |
| Glendale | CDP | 86 |
| Ward | town | 70 |
| Hidden Lake | CDP | 30 |
| Leyner | CDP | 0 |
What is the largest city in Boulder County, Colorado?
Boulder is the largest city in Boulder County, Colorado with a population of 104,930.
TOP-5 cities by population in Boulder County, Colorado:
- Boulder
- Longmont
- Lafayette
- Erie
- Louisville