Irwin, Idaho Demographics & Population 2026
During the 2020–2024 ACS period, Irwin, Idaho had a total population of 236, the 183rd largest city in Idaho, with a median household income of $67,500, which is 13% lower than the state average. The poverty rate is 11.4%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
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 | 253 | 236 | -6.7% |
| Median household income | $69,792 | $67,500 | -3.3% |
| Median home value | $346,000 | $433,300 | +25.2% |
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: 36 | National average: 61
Education
Educational Attainment (Adults 25+)
Irwin Rankings in Idaho
Explore Idaho Rankings
Other Cities in Bonneville County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Idaho Falls | 67,725 | $73,110 | 11.5% | $335,500 |
| Ammon | 19,064 | $86,121 | 5.4% | $381,800 |
| Lincoln | 4,002 | $84,280 | 18.4% | $377,500 |
| Iona | 2,984 | $84,914 | 12.2% | $420,300 |
| Ucon | 1,606 | $89,079 | 4.2% | $340,900 |
| Ririe | 1,079 | $67,123 | 4.5% | $160,700 |
| Swan Valley | 281 | N/A | 15.3% | $672,400 |
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 |
|---|---|---|---|---|---|
| Bliss | 229 | $65,500 | $118,800 | 6.7% | 10.5% |
| Moore | 228 | $70,625 | $232,700 | 29.0% | 16.7% |
| Lava Hot Springs | 218 | N/A | $316,700 | 18.4% | 12.5% |
| Rockland | 228 | $60,395 | $212,500 | 29.5% | 17.5% |
| Bancroft | 250 | $78,281 | $164,200 | 10.3% | 1.2% |
A note before these figures: with a population of 236, 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 Idaho, within Bonneville County. The total population is 236. It ranks as the 183rd most populous out of 232 Census-designated places in Idaho.
Age Demographics
The median age in Irwin is 57.8 years. This is 55% higher than the state median of 37.3 years. Only 11.9% of residents are under 18, indicating fewer families with children. 11.0% 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 Irwin is $67,500. This is 13% lower than the state median of $77,800. It is also 16% lower than the national median of $80,734. The poverty rate stands at 11.4%. This is 8% higher than the state poverty rate of 10.6%. The survey records no unemployed residents in Irwin, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $433,300. Housing costs are 4% higher than the state median of $418,600. The home-value-to-income ratio of 6.4x suggests that housing affordability is a significant concern for many residents. 98.4% of occupied housing units are owner-occupied. This homeownership rate is 36% higher than the state average of 72.1%.
Race & Ethnicity
The largest racial or ethnic group in Irwin is White (non-Hispanic), making up 83.9% of the population. Hispanic or Latino residents account for 9.8%.
Education
26.9% of residents aged 25 and older hold a bachelor's degree or higher. This is 16% lower than the state rate of 31.8%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 93.0%.
Data Sources & Methodology
All demographic data for Irwin, Idaho 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 Idaho state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 232 Census-designated places in Idaho. 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, Idaho?
Irwin, Idaho has a population of 236 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Irwin, ID?
The median household income in Irwin is $67,500, which is 16% lower than the national median of $80,734.
What is the poverty rate in Irwin, ID?
The poverty rate in Irwin is 11.4%. This means approximately 27 residents live below the federal poverty line.
What is the racial makeup of Irwin, Idaho?
Irwin's population is 83.9% White, 0.0% Black, 9.8% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Irwin, ID?
The median home value in Irwin is $433,300. The home-value-to-income ratio is 6.4x.
How educated is Irwin, Idaho?
26.9% of adults (25+) in Irwin hold a bachelor's degree or higher, and 10.9% hold a graduate or professional degree.