
Des Plaines
- County:
- Cook County
- County Seat:
- No
- Area (mi²):
- 14.238
- State:
- Illinois
Des Plaines is a city located in Cook County, Illinois. Des Plaines has a 2025 population of 56,380. Des Plaines is currently declining at a rate of -1.42% annually and its population has decreased by -6.74% since the most recent census, which recorded a population of 60,455 in 2020.
The average household income in Des Plaines is $114,985 with a poverty rate of 5.83%. The median age in Des Plaines is 42.8 years: 41.5 years for males, and 44.6 years for females.