St. Leo: Demographics & People
153 people call St. Leo home, in 63 households. Population grew 18.6% from 129 (2022) to 153 (2024). Median age 55.8 years. (13.7y older than Yellow Medicine County; 16.8y older than Minnesota). Children under 18 are 18% of the population. Population is 95% White (non-Hispanic). The community is relatively homogeneous (Simpson index 0.09). 65% of households are family-led. County is losing 166 residents per year (2022-2023). County health: 40% adult obesity, 17% smoke.
- 2.4 people per household.
- 35% non-family households (singles, roommates).
Population & Trend
Population grew 18.6% from 129 (2022) to 153 (2024) — about 31.0× the recent U.S. annual rate of ~0.6%/yr. Estimated 2026 population: ~182 (extrapolated at 9.3%/yr trend). Census Bureau Vintage estimate: 227.
| Census data vintage | 2024 |
|---|---|
| Population | 9,528 people |
| Annual growth rate · Population change | 18.6% |
| Annual growth rate · Population (2022) | 129 |
| Annual growth rate · Population (2024) | 153 |
| Annual growth rate · Population growing | Yes |
| Annual growth rate · Trend category | booming |
| Population | 153 people |
| Population Estimate | 227 |
Sources: Census ACS 5-Year 2023, Table B01003 · Refreshed 2026-04-12
Age Distribution
Median age 55.8y is 16.9 years older than the U.S. median (38.9y). Children under 18 make up 18% — below the U.S. share of ~22%.
| Age Summary · Median age | 55.8 years (vs Minnesota 39.0y) |
|---|---|
| Age Summary · Children Pct | 18.3% |
| Age Summary · Character | retirement community |
| Population under 18 | 28 |
| Median age | 55.8 years (vs Minnesota 39.0y) |
Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12
Race, Ethnicity & Diversity
Of 153 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups). The Simpson diversity index is 0.09 (0 = single group, 1 = perfectly even distribution); this is read as relatively homogeneous.
| White residents | 118 |
|---|---|
| Black residents | 6 |
| Diversity Index · Diversity index (Simpson) | 9.2% |
| Diversity Index · Diversity label | relatively homogeneous |
| Diversity Index · Groups counted | 2 |
| Diversity Index · Largest group share | 95.2% |
| White (non-Hispanic) population | 95.4% |
Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12
Ancestry
Self-reported ancestry from Census ACS — what residents report as their ethnic origin, separate from race. Counts can exceed population because people can list multiple ancestries.
Top (5)
Citizenship & Origin
Where residents were born and their citizenship status (Census ACS).
| Residents born in this state | 125 |
|---|---|
| Residents born in another state | 28 |
| Share born in this state | 81.7% |
| Share born in another state | 18.3% |
| Native-born U.S. citizens | 18.3% |
| Total foreign-born residents | 6 |
Households & Family Composition
63 households. Averaging 2.0 people each — smaller than the U.S. average of 2.5. 65% are family households — near the U.S. share of ~65%. Of 31 families, 29% are married couples with children.
| Children under 18 | 18 |
|---|---|
| Total families | 31 |
| Married couples with children | 9 |
| Single-parent households | 2 |
| Average household size | 2.02 |
| Women who gave birth (past year) | 7.2% |
| Grandparents living with grandchildren | 59 |
| Grandparents responsible for grandchildren | 16 |
| Family households | 41 households |
| Households that are families | 65.1% |
| Total households | 63 households |
Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12
Residential Stability & Migration
How long residents have lived here and where they came from. 1.3% moved within the county in the past year — the U.S. baseline is roughly 8–10%. The surrounding county is losing 166 residents per year on net (IRS migration data).
| Moved within the county (past year) | 1.3% |
|---|---|
| Migration · People moving in (annual) | 9,129 |
| Migration · People moving out (annual) | 9,295 |
| Migration · Net migration (in − out) | -166 |
| Migration · Year | 2022-2023 |
Sources: IRS SOI Migration 2021-2022 · Refreshed 2026-04-12
Disability
Census ACS measures self-reported functional limitations — vision, hearing, mobility, cognitive, self-care, or independent-living. The U.S. baseline disability rate is about 12–13%; rates trend higher with median age.
| Residents with a disability | 16 |
|---|---|
| Disability rate | 10.6% |
Other
| Congressional District · District | 7 |
|---|---|
| Congressional District · Formatted | MN-07 |
| Congressional District · Congress | 118th |
| Cdc Birth Rate · Fips | 27,173 |
| Cdc Birth Rate · State Fips | 27 |
| Cdc Birth Rate · County Fips | 173 |
| Cdc Birth Rate · County | Yellow Medicine |
| Cdc Birth Rate · Birth Rate | 15.8% |
| Cdc Birth Rate · Lower Ci | 10.50 |
| Cdc Birth Rate · Upper Ci | 22.90 |
| Cdc Mortality · Fips | 27,173 |
| Cdc Mortality · County | Yellow Medicine County |
| Cdc Mortality · Urban Rural | Noncore |
| Cdc Mortality · Total Deaths 2020 2023 | 308 |
| Cdc Vaccination · Fips | 27,173 |
| Cdc Vaccination · County | Yellow Medicine County |
| Cdc Vaccination · Dose1 Pop Pct | 61.9% |
| Cdc Vaccination · Series Complete Pct | 58.5% |
| Cdc Vaccination · Booster Pct | 58.4% |
| Cdc Vaccination · Population 2019 | 9,709 |
| Cdc Vaccination · Metro Status | Non-metro |
| Family Score · Score | 4.00 |
| Family Score · Schools | 6 |
| Family Score · Children Pct | 18.3% |
| Family Score · Rating | fair |
| Town Summary · Key Facts | population 153, booming, retirement community, middle-class, blue collar |
| Town Summary · Population | 153 people |
| Town Summary · County | Yellow Medicine County |
Sources: Census place-to-CD118 crosswalk (place_fips) · federal dataset cascade