
Martinsville township
- County:
- Clark County
- County Seat:
- No
- Area (mi²):
- 41.636
- State:
- Illinois
Martinsville township is located in Clark County, Illinois. Martinsville township has a 2025 population of 1,483. Martinsville township is currently declining at a rate of -0.47% annually and its population has decreased by -3.2% since the most recent census, which recorded a population of 1,532 in 2020.
The average household income in Martinsville township is $73,972 with a poverty rate of 18.49%. The median age in Martinsville township is 45.8 years: 48.3 years for males, and 44.2 years for females.