Irwin, Missouri Demographics & Population 2026
During the 2020–2024 ACS period, Irwin, Missouri had a total population of 43, the 992nd largest community in Missouri. The poverty rate is 0.0%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- 100.0% of adults hold a bachelor's degree or higher — top 10% in Missouri.
Irwin Quick Facts
How Irwin 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 | 37 | 43 | +16.2% |
How Irwin 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: 40 | National average: 61
Education
Educational Attainment (Adults 25+)
Irwin Rankings in Missouri
Explore Missouri Rankings
Other Cities in Barton County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Lamar | 4,284 | $36,705 | 32.6% | $117,200 |
| Liberal | 747 | $65,250 | 14.1% | $77,000 |
| Golden City | 708 | $44,167 | 18.9% | $79,300 |
| Mindenmines | 312 | $22,292 | 39.1% | $46,900 |
| Iantha | 124 | N/A | 15.3% | N/A |
| Lamar Heights | 111 | N/A | 26.1% | $260,700 |
| Milford | 54 | N/A | 1.8% | $329,200 |
| Burgess | 24 | N/A | 0.0% | N/A |
Cities Similar to Irwin
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Deerfield | 43 | N/A | $113,900 | 5.3% | 18.6% |
| Tallapoosa | 43 | $55,750 | $37,500 | 0.0% | 14.0% |
| Bagnell | 44 | $15,000 | N/A | 0.0% | 54.5% |
| Morrison | 44 | $58,750 | N/A | 20.0% | 13.6% |
| Knob Lick | 41 | N/A | N/A | 0.0% | 0.0% |
A note before these figures: with a population of 43, Irwin'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
Irwin is a small community located in Missouri, within Barton County. The total population is 43. It ranks as the 992nd most populous out of 1,062 Census-designated places in Missouri.
Age Demographics
Economy, Income & Housing
The ACS records no residents below the poverty line in Irwin. 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 Irwin, which reflects the size of the sample rather than a labor market without joblessness. Every occupied housing unit the survey reached in Irwin was renter-occupied. At this sample size that indicates no owner-occupied homes were captured rather than that none exist.
Race & Ethnicity
Every resident counted in Irwin 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
100.0% of residents aged 25 and older hold a bachelor's degree or higher. This places Irwin in the top 10% of all cities in the state for educational attainment. This is 209% higher than the state rate of 32.4%. 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 Irwin, Missouri 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 Missouri state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,062 Census-designated places in Missouri. 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 Irwin, Missouri?
Irwin, Missouri has a population of 43 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Irwin, MO?
The Census Bureau does not publish a reliable median household income estimate for Irwin — the community is too small for the ACS sample. The national median is $80,734.
What is the poverty rate in Irwin, MO?
The ACS sample for Irwin recorded no residents below the federal poverty line. Because the community is small, this indicates that the survey did not capture poverty here rather than that no poverty exists — the estimate carries a wide margin of error.
What is the racial makeup of Irwin, Missouri?
Irwin's population is 100.0% White, 0.0% Black, 0.0% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Irwin, MO?
The Census Bureau does not publish a reliable median home value estimate for Irwin — there are too few owner-occupied homes in the ACS sample. The national median is $332,700.
How educated is Irwin, Missouri?
100.0% of adults (25+) in Irwin hold a bachelor's degree or higher, and 0.0% hold a graduate or professional degree.