
Havana
- County:
- Mason County
- County Seat:
- Yes
- Area (mi²):
- 2.776
- State:
- Illinois
Havana is a city located in Mason County, Illinois. Havana has a 2025 population of 2,741. It is also the county seat of Mason County. Havana is currently declining at a rate of -1.54% annually and its population has decreased by -7.27% since the most recent census, which recorded a population of 2,956 in 2020.
The average household income in Havana is $69,699 with a poverty rate of 20.71%. The median age in Havana is 41.7 years: 42.7 years for males, and 40.5 years for females.