
Mount Ayr
- County:
- Newton County
- County Seat:
- No
- Area (mi²):
- 0.175
- State:
- Indiana
Mount Ayr is a town located in Newton County, Indiana. Mount Ayr has a 2025 population of 114. Mount Ayr is currently declining at a rate of 0% annually and its population has decreased by -1.72% since the most recent census, which recorded a population of 116 in 2020.
The average household income in Mount Ayr is $56,535 with a poverty rate of 22.58%. The median age in Mount Ayr is 45.5 years: 60.4 years for males, and 40.9 years for females.