
Greenville
- County:
- Clay County
- County Seat:
- No
- Area (mi²):
- 0.166
- State:
- Iowa
Greenville is a city located in Clay County, Iowa. Greenville has a 2025 population of 68. Greenville is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 68 in 2020.
The average household income in Greenville is $56,619 with a poverty rate of 12.86%. The median age in Greenville is 26.5 years: 16.3 years for males, and 26.9 years for females.