Jefferson township
- County:
- Washington County
- County Seat:
- No
- Area (mi²):
- 48.101
- State:
- Indiana
Jefferson township is located in Washington County, Indiana. Jefferson township has a 2026 population of 864. Jefferson township is currently growing at a rate of 0.82% annually and its population has increased by 1.65% since the most recent census, which recorded a population of 850 in 2020.
The median household income in Jefferson township is $71,607 with a poverty rate of 11.03%. The median age in Jefferson township is 45.2 years: 43.1 years for males, and 49.1 years for females. For every 100 females there are 147.2 males.