
Festus
- County:
- Jefferson County
- County Seat:
- No
- Area (mi²):
- 5.905
- State:
- Missouri
Festus is a city located in Jefferson County, Missouri. Festus has a 2025 population of 13,924. Festus is currently growing at a rate of 1.76% annually and its population has increased by 9.46% since the most recent census, which recorded a population of 12,721 in 2020.
The average household income in Festus is $78,051 with a poverty rate of 16.57%. The median age in Festus is 35.4 years: 31.7 years for males, and 37.7 years for females.