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 2026 population of 116. Mount Ayr 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 116 in 2020.
The median household income in Mount Ayr is $49,250 with a poverty rate of 25.56%. The median age in Mount Ayr is 48.5 years: 60.3 years for males, and 40.5 years for females. For every 100 females there are 109.3 males.