Founded on 1902/11/15, Adams County is one of 64 counties in the state of Colorado. Historically, Adams County was split from Arapahoe County. The city of Brighton is the county seat. With FIPS code of 1, Adams County has a population of 522,140 and area of 1,182.29 square miles (3,062 km2).
List of all cities in Adams County, CO alphabetically
| City/Town | Postal Code | Area Code |
| Adams City, CO | 80022 | 303/720 |
| Aurora, CO | 80011 | 303/720 |
| 80019 | 303/720 | |
| 80040 | 303/720 | |
| 80042 | 303/720 | |
| 80045 | 303/720 | |
| Bennett, CO | 80102 | 303/720 |
| Brighton, CO | 80022 | 303/720 |
| 80601 | 303/720 | |
| 80602 | 303/720 | |
| Broomfield, CO | 80234 | 303/720 |
| Buckley Air National Guard Base, CO | 80011 | 303/720 |
| Commerce City, CO | 80022 | 303/720 |
| 80037 | 303/720 | |
| Denver, CO | 80022 | 303/720 |
| 80030 | 303/720 | |
| 80031 | 303/720 | |
| 80221 | 303/720 | |
| 80229 | 303/720 | |
| 80233 | 303/720 | |
| 80234 | 303/720 | |
| 80241 | 303/720 | |
| 80260 | 303/720 | |
| Dupont, CO | 80024 | 303/720 |
| East Lake, CO | 80241 | 303/720 |
| Eastlake, CO | 80241 | 303/720 |
| 80614 | 303/720 | |
| Federal Heights, CO | 80221 | 303/720 |
| 80234 | 303/720 | |
| 80260 | 303/720 | |
| Henderson, CO | 80640 | 303/720 |
| Irondale, CO | 80022 | 303/720 |
| Northglenn, CO | 80221 | 303/720 |
| 80233 | 303/720 | |
| 80234 | 303/720 | |
| 80241 | 303/720 | |
| 80260 | 303/720 | |
| Strasburg, CO | 80136 | 303/720 |
| Thornton, CO | 80221 | 303/720 |
| 80229 | 303/720 | |
| 80233 | 303/720 | |
| 80234 | 303/720 | |
| 80241 | 303/720 | |
| 80260 | 303/720 | |
| 80601 | 303/720 | |
| 80602 | 303/720 | |
| Watkins, CO | 80137 | 303/720 |
| Welby, CO | 80229 | 303/720 |
| Westminster, CO | 80030 | 303/720 |
| 80031 | 303/720 | |
| 80035 | 303/720 | |
| 80036 | 303/720 | |
| 80221 | 303/720 | |
| 80234 | 303/720 | |
| 80241 | 303/720 | |
| 80260 | 303/720 |
Map of Cities in Adams County, CO
