Osco, Illinois Demographics & Population 2026
During the 2020–2024 ACS period, Osco, Illinois had a total population of 74, the 1368th largest community in Illinois, with a median household income of $72,778, which is 13% lower than the state average. The poverty rate is 13.5%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Only 0.0% of adults have a bachelor's degree, well below the national average of 35.7%.
- Housing is very affordable with a home-value-to-income ratio of just 1.5x.
Osco Quick Facts
How Osco Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 63 | 74 | +17.5% |
| Median home value | $110,400 | $109,600 | -0.7% |
How Osco Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 61 | National average: 61
Education
Educational Attainment (Adults 25+)
Osco Rankings in Illinois
Explore Illinois Rankings
Other Cities in Henry County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Kewanee | 11,913 | $50,886 | 17.9% | $73,200 |
| Geneseo | 6,673 | $70,147 | 2.6% | $205,400 |
| Colona | 5,139 | $79,700 | 3.8% | $147,500 |
| Galva | 2,454 | $52,470 | 18.8% | $83,700 |
| Cambridge | 2,128 | $64,979 | 13.1% | $123,100 |
| Orion | 1,812 | $94,375 | 5.2% | $178,500 |
| Atkinson | 982 | $57,174 | 5.7% | $119,600 |
| Annawan | 865 | $70,729 | 6.7% | $135,100 |
| Alpha | 831 | $77,639 | 1.6% | $111,400 |
| Woodhull | 731 | $65,893 | 13.3% | $122,400 |
Cities Similar to Osco
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Illinois City | 73 | N/A | N/A | 37.5% | 0.0% |
| Unity | 77 | N/A | N/A | 79.6% | 5.2% |
| Belle Prairie City | 72 | $76,071 | $161,100 | 42.2% | 30.6% |
| Longview | 78 | $74,375 | $63,300 | 4.5% | 5.1% |
| Ritchie | 79 | N/A | $347,700 | 25.8% | 0.0% |
A note before these figures: with a population of 74, Osco'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
Osco is a small community located in Illinois, within Henry County. The total population is 74. It ranks as the 1368th most populous out of 1,445 Census-designated places in Illinois.
Age Demographics
The median age in Osco is 64.2 years. This is 65% higher than the state median of 39.0 years. 25.7% 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 Osco is $72,778. This is 13% lower than the state median of $83,390. It is also 10% lower than the national median of $80,734. The poverty rate stands at 13.5%. This is 14% higher than the state poverty rate of 11.8%. The survey records no unemployed residents in Osco, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $109,600. Housing costs are 58% lower than the state median of $263,300. With a home-value-to-income ratio of just 1.5x, Osco is one of the most affordable housing markets in the area. 100.0% of occupied housing units are owner-occupied. This homeownership rate is 49% higher than the state average of 67.1%.
Race & Ethnicity
Every resident counted in Osco 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
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. The high school graduation rate (or equivalent) is 85.1%.
Data Sources & Methodology
All demographic data for Osco, Illinois 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 Illinois state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,445 Census-designated places in Illinois. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Osco, Illinois?
Osco, Illinois has a population of 74 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Osco, IL?
The median household income in Osco is $72,778, which is 10% lower than the national median of $80,734.
What is the poverty rate in Osco, IL?
The poverty rate in Osco is 13.5%. This means approximately 10 residents live below the federal poverty line.
What is the racial makeup of Osco, Illinois?
Osco's population is 100.0% White, 0.0% Black, 0.0% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Osco, IL?
The median home value in Osco is $109,600. The home-value-to-income ratio is 1.5x.
How educated is Osco, Illinois?
0.0% of adults (25+) in Osco hold a bachelor's degree or higher, and 0.0% hold a graduate or professional degree.