Counties in Illinois with the most active listings for September 2026. Source: Realtor.com.
13,247 active listings · $424,198 median
2,702 active listings · $520,481 median
2,478 active listings · $439,482 median
1,959 active listings · $584,181 median
1,231 active listings · $479,221 median
1,183 active listings · $434,142 median
1,100 active listings · $245,566 median
888 active listings · $273,608 median
768 active listings · $254,656 median
634 active listings · $323,213 median
