Brighton
- County:
- Adams County
- County Seat:
- Yes
- Area (mi²):
- 21.739
- State:
- Colorado
Brighton is a city located in Adams County, Colorado. Brighton has a 2026 population of 43,473. It is also the county seat of Adams County. Brighton is currently growing at a rate of 1.91% annually and its population has increased by 7.89% since the most recent census, which recorded a population of 40,294 in 2020.