Oswego, Indiana Demographics & Population 2026

A note before these figures: with a population of 283, Oswego'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

Oswego is a small community located in Indiana. The total population is 283. It ranks as the 628th most populous out of 967 Census-designated places in Indiana.

Age Demographics

The median age in Oswego is 31.9 years. This is 16% lower than the state median of 38.1 years. Only 12.0% of residents are under 18, indicating fewer families with children. 27.6% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.

Economy, Income & Housing

The median household income in Oswego is $58,190. This is 19% lower than the state median of $71,957. It is also 28% lower than the national median of $80,734. The ACS records no residents below the poverty line in Oswego. 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 Oswego, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $238,100. Housing costs are 9% higher than the state median of $218,200. The home-value-to-income ratio is 4.1x. 90.2% of occupied housing units are owner-occupied. This homeownership rate is 28% higher than the state average of 70.5%.

Race & Ethnicity

Oswego has a predominantly White (non-Hispanic) population, comprising 97.2% of all residents. Hispanic or Latino residents account for 2.8%. The Hispanic or Latino population (2.8%) is well below the state average of 8.6%.

Education

45.4% of residents aged 25 and older hold a bachelor's degree or higher. This places Oswego in the top 10% of all cities in the state for educational attainment. This is 54% higher than the state rate of 29.5%. 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 Oswego, 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.