
Welby
- County:
- Adams County
- County Seat:
- No
- Area (mi²):
- 3.704
- State:
- Colorado
Welby is a CDP located in Adams County, Colorado. Welby has a 2025 population of 16,647. Welby is currently growing at a rate of 0.73% annually and its population has increased by 8.29% since the most recent census, which recorded a population of 15,372 in 2020.
The average household income in Welby is $89,034 with a poverty rate of 9.43%. The median age in Welby is 33.9 years: 33 years for males, and 34.3 years for females.