Flat Rock, Indiana Demographics & Population 2026

A note before these figures: with a population of 121, Flat Rock'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

Flat Rock is a small community located in Indiana. The total population is 121. It ranks as the 821st most populous out of 967 Census-designated places in Indiana.

Age Demographics

The median age in Flat Rock is 29.2 years. This is 23% lower than the state median of 38.1 years. With 28.9% of the population under 18, Flat Rock has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The median household income in Flat Rock is $59,000. This is 18% lower than the state median of $71,957. It is also 27% lower than the national median of $80,734. The ACS records no residents below the poverty line in Flat Rock. In a community this small the estimate rests on very few survey responses, so it should be read as an absence of measurement rather than a measured absence of poverty. The survey records no unemployed residents in Flat Rock, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $135,300. Housing costs are 38% lower than the state median of $218,200. With a home-value-to-income ratio of just 2.3x, Flat Rock is one of the most affordable housing markets in the area. 66.0% of occupied housing units are owner-occupied. This homeownership rate is 6% lower than the state average of 70.5%.

Race & Ethnicity

Flat Rock has a predominantly White (non-Hispanic) population, comprising 95.9% of all residents.

Education

0.0% of residents aged 25 and older hold a bachelor's degree or higher. This is among the lowest rates in the state, which may correlate with employment and income patterns. Nationally, 35.7% of adults hold at least a bachelor's degree. No surveyed resident aged 25 or older reported leaving school before earning a high school diploma, though a rate of exactly 100% reflects the limits of a small sample.

Data Sources & Methodology

All demographic data for Flat Rock, 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.