
Andalusia
- County:
- Rock Island County
- County Seat:
- No
- Area (mi²):
- 1.175
- State:
- Illinois
Andalusia is a village located in Rock Island County, Illinois. Andalusia has a 2025 population of 1,144. Andalusia is currently declining at a rate of -0.61% annually and its population has decreased by -3.13% since the most recent census, which recorded a population of 1,181 in 2020.
The average household income in Andalusia is $85,169 with a poverty rate of 5.37%. The median age in Andalusia is 52 years: 52.4 years for males, and 50.7 years for females.