
Elsah township
- County:
- Jersey County
- County Seat:
- No
- Area (mi²):
- 23.871
- State:
- Illinois
Elsah township is located in Jersey County, Illinois. Elsah township has a 2025 population of 2,050. Elsah township is currently declining at a rate of -1.06% annually and its population has decreased by -5.36% since the most recent census, which recorded a population of 2,166 in 2020.
The average household income in Elsah township is $128,938 with a poverty rate of 6.15%. The median age in Elsah township is 34.7 years: 30.8 years for males, and 36.6 years for females.