
Elgin
- County:
- Kane County
- County Seat:
- No
- Area (mi²):
- 38.143
- State:
- Illinois
Elgin is a city located in Kane County, Illinois. Elgin has a 2025 population of 112,438. Elgin is currently declining at a rate of -0.39% annually and its population has decreased by -1.9% since the most recent census, which recorded a population of 114,617 in 2020.
The average household income in Elgin is $104,679 with a poverty rate of 10.41%. The median age in Elgin is 36.3 years: 35.3 years for males, and 37.2 years for females.