St. Hilaire: Demographics & People
St. Hilaire's population stands at 259 people, in 108 households. Population shrank 9.1% from 285 (2022) to 259 (2024). Median age 44.9 years. (5.3y older than Pennington County; 5.9y older than Minnesota). Children under 18 are 17% of the population. Population is 79% White (non-Hispanic) and 11% Hispanic or Latino. The community is relatively homogeneous (Simpson index 0.12). 73% of households are family-led. County is losing 277 residents per year (2022-2023). County health: 30% adult obesity, 15% smoke.
- 2.4 people per household.
- 27% non-family households (singles, roommates).
Population & Trend
Population shrank 9.1% from 285 (2022) to 259 (2024). Estimated 2026 population: ~235 (extrapolated at -4.6%/yr trend). Census Bureau Vintage estimate: 207.
| Census data vintage | 2024 |
|---|---|
| Population | 13,992 people |
| Annual growth rate · Population change | -9.1% |
| Annual growth rate · Population (2022) | 285 |
| Annual growth rate · Population (2024) | 259 |
| Annual growth rate · Trend category | shrinking |
| Population | 259 people |
| Population Estimate | 207 |
Sources: Census ACS 5-Year 2023, Table B01003 · Refreshed 2026-04-12
Age Distribution
Median age 44.9y is 6.0 years older than the U.S. median (38.9y). Children under 18 make up 17% — below the U.S. share of ~22%.
| Age Summary · Median age | 44.9 years (vs Minnesota 39.0y) |
|---|---|
| Age Summary · Children Pct | 17.4% |
| Age Summary · Character | established |
| Population under 18 | 45 |
| Median age | 44.9 years (vs Minnesota 39.0y) |
Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12
Race, Ethnicity & Diversity
Of 259 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups). The Simpson diversity index is 0.12 (0 = single group, 1 = perfectly even distribution); this is read as relatively homogeneous.
| White residents | 244 |
|---|---|
| Black residents | 3 |
| Hispanic or Latino residents | 14 |
| Diversity Index · Diversity index (Simpson) | 12.3% |
| Diversity Index · Diversity label | relatively homogeneous |
| Diversity Index · Groups counted | 3 |
| Diversity Index · Largest group share | 93.5% |
| Black population | 0.8% |
| Hispanic or Latino population | 10.8% |
| White (non-Hispanic) population | 78.8% |
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 (6)
Citizenship & Origin
Where residents were born and their citizenship status (Census ACS). 1.9% are foreign-born — below the U.S. average of 13.9%. 9% have naturalized to U.S. citizenship.
| Residents born in this state | 167 |
|---|---|
| Residents born in another state | 64 |
| Share born in this state | 64.5% |
| Share born in another state | 35.5% |
| Native-born U.S. citizens | 24.7% |
| Foreign-born residents | 1.9% |
| Naturalized citizens | 8.9% |
| Total foreign-born residents | 3 |
Households & Family Composition
108 households. Averaging 2.5 people each — matches the U.S. average of 2.5. 73% are family households — above the U.S. share of ~65%. Of 81 families, 31% are married couples with children.
| Children under 18 | 67 |
|---|---|
| Total families | 81 |
| Married couples with children | 25 |
| Single-parent households | 2 |
| Average household size | 2.48 |
| Women who gave birth (past year) | 6.2% |
| Grandparents living with grandchildren | 120 |
| Grandparents responsible for grandchildren | 16 |
| Family households | 79 households |
| Households that are families | 73.1% |
| Total households | 108 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. 9.8% moved within the county in the past year — the U.S. baseline is roughly 8–10%. The surrounding county is losing 277 residents per year on net (IRS migration data).
| Moved within the county (past year) | 9.8% |
|---|---|
| Migration · People moving in (annual) | 12,953 |
| Migration · People moving out (annual) | 13,230 |
| Migration · Net migration (in − out) | -277 |
| 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 | 8 |
|---|---|
| Disability rate | 3.1% |
Other
| Congressional District · District | 7 |
|---|---|
| Congressional District · Formatted | MN-07 |
| Congressional District · Congress | 118th |
| Cdc Birth Rate · Fips | 27,113 |
| Cdc Birth Rate · State Fips | 27 |
| Cdc Birth Rate · County Fips | 113 |
| Cdc Birth Rate · County | Pennington |
| Cdc Birth Rate · Birth Rate | 18.8% |
| Cdc Birth Rate · Lower Ci | 13.70 |
| Cdc Birth Rate · Upper Ci | 25.20 |
| Cdc Mortality · Fips | 27,113 |
| Cdc Mortality · County | Pennington County |
| Cdc Mortality · Urban Rural | Noncore |
| Cdc Mortality · Total Deaths 2020 2023 | 454 |
| Cdc Vaccination · Fips | 27,113 |
| Cdc Vaccination · County | Pennington County |
| Cdc Vaccination · Dose1 Pop Pct | 55.6% |
| Cdc Vaccination · Series Complete Pct | 55.0% |
| Cdc Vaccination · Booster Pct | 58.4% |
| Cdc Vaccination · Population 2019 | 14,119 |
| Cdc Vaccination · Metro Status | Non-metro |
| Family Score · Score | 4.50 |
| Family Score · Schools | 7 |
| Family Score · Children Pct | 17.4% |
| Family Score · Rating | fair |
| Town Summary · Key Facts | population 259, shrinking, established, middle-class, mixed |
| Town Summary · Population | 259 people |
| Town Summary · County | Pennington County |
Sources: Census place-to-CD118 crosswalk (place_fips) · federal dataset cascade