Mount Ayr, Indiana Demographics & Population 2026

A note before these figures: with a population of 90, Mount Ayr's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.

Population Overview

Mount Ayr is a small community located in Indiana, within Newton County. The total population is 90. It ranks as the 864th most populous out of 967 Census-designated places in Indiana.

Age Demographics

The median age in Mount Ayr is 48.5 years. This is 27% higher than the state median of 38.1 years.

Economy, Income & Housing

The median household income in Mount Ayr is $49,250. This is 32% lower than the state median of $71,957. It is also 39% lower than the national median of $80,734. The poverty rate stands at 25.6%. This is 107% higher than the state poverty rate of 12.3%. With more than one in five residents living below the poverty line, economic hardship is a significant challenge for the community. The unemployment rate is 2.3%. This is 46% lower than the state rate of 4.3%. The median home value is $90,000. Housing costs are 59% lower than the state median of $218,200. With a home-value-to-income ratio of just 1.8x, Mount Ayr is one of the most affordable housing markets in the area. 92.7% of occupied housing units are owner-occupied. This homeownership rate is 31% higher than the state average of 70.5%.

Race & Ethnicity

Every resident counted in Mount Ayr was recorded as White (non-Hispanic). A figure of exactly 100.0% reflects a survey sample too small to capture the community's full composition rather than a precise measurement.

Education

5.7% of residents aged 25 and older hold a bachelor's degree or higher. This is 81% lower than the state rate of 29.5%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 80.0%.

Data Sources & Methodology

All demographic data for Mount Ayr, Indiana is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Indiana state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 967 Census-designated places in Indiana. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.