St. Lucas, Iowa Demographics & Population 2026
During the 2020–2024 ACS period, St. Lucas, Iowa had a total population of 154, the 757th largest city in Iowa, with a median household income of $104,375, which is 39% higher than the state average. The poverty rate is 5.8%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Household income is 39% above the state average — one of the wealthiest communities in Iowa.
- Housing is very affordable with a home-value-to-income ratio of just 1.3x.
St. Lucas Quick Facts
How St. Lucas 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 | 186 | 154 | -17.2% |
| Median household income | $75,000 | $104,375 | +39.2% |
| Median home value | $112,500 | $134,400 | +19.5% |
How St. Lucas 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: 31 | National average: 61
Education
Educational Attainment (Adults 25+)
St. Lucas Rankings in Iowa
Explore Iowa Rankings
Other Cities in Fayette County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Oelwein | 5,834 | $46,653 | 18.5% | $96,300 |
| West Union | 2,489 | $53,617 | 11.6% | $121,000 |
| Fayette | 1,309 | $47,917 | 25.7% | $119,000 |
| Elgin | 735 | $54,688 | 3.7% | $98,800 |
| Clermont | 627 | $85,625 | 4.0% | $117,200 |
| Hawkeye | 482 | $62,813 | 3.9% | $84,600 |
| Maynard | 471 | $55,583 | 8.9% | $132,100 |
| Arlington | 427 | $38,958 | 15.0% | $112,000 |
| Waucoma | 291 | $78,750 | 3.4% | $122,700 |
| Westgate | 178 | $53,750 | 35.1% | $78,300 |
Cities Similar to St. Lucas
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Harper | 155 | $100,417 | $99,200 | 17.9% | 7.7% |
| Pacific Junction | 150 | N/A | $149,100 | 5.6% | 14.0% |
| Franklin | 148 | N/A | $111,300 | 11.7% | 1.4% |
| Linden | 150 | $107,813 | $112,500 | 6.5% | 14.7% |
| Luther | 159 | $100,938 | $191,700 | 23.9% | 0.0% |
A note before these figures: with a population of 154, St. Lucas'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
St. Lucas is a small community located in Iowa, within Fayette County. The total population is 154. It ranks as the 757th most populous out of 1,017 Census-designated places in Iowa.
Age Demographics
The median age in St. Lucas is 37.5 years. This is 3% lower than the state median of 38.6 years. With 31.8% of the population under 18, St. Lucas has a notably young demographic profile, suggesting a family-oriented community.
Economy, Income & Housing
The median household income in St. Lucas is $104,375. This is 39% higher than the state median of $75,059. It is also 29% higher than the national median of $80,734. The poverty rate stands at 5.8%. This is 47% lower than the state poverty rate of 11.1%. The survey records no unemployed residents in St. Lucas, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $134,400. Housing costs are 35% lower than the state median of $208,000. With a home-value-to-income ratio of just 1.3x, St. Lucas is one of the most affordable housing markets in the area. 96.4% of occupied housing units are owner-occupied. This homeownership rate is 34% higher than the state average of 71.7%.
Race & Ethnicity
Every resident counted in St. Lucas 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
13.3% of residents aged 25 and older hold a bachelor's degree or higher. This is 58% lower than the state rate of 31.4%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 99.0%.
Data Sources & Methodology
All demographic data for St. Lucas, Iowa 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 Iowa state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,017 Census-designated places in Iowa. 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 St. Lucas, Iowa?
St. Lucas, Iowa has a population of 154 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in St. Lucas, IA?
The median household income in St. Lucas is $104,375, which is 29% higher than the national median of $80,734.
What is the poverty rate in St. Lucas, IA?
The poverty rate in St. Lucas is 5.8%. This means approximately 9 residents live below the federal poverty line.
What is the racial makeup of St. Lucas, Iowa?
St. Lucas's population is 100.0% White, 0.0% Black, 0.0% Hispanic/Latino, and 0.0% Asian.
What is the median home value in St. Lucas, IA?
The median home value in St. Lucas is $134,400. The home-value-to-income ratio is 1.3x.
How educated is St. Lucas, Iowa?
13.3% of adults (25+) in St. Lucas hold a bachelor's degree or higher, and 9.2% hold a graduate or professional degree.