St. Marys Point: Demographics & People
St. Marys Point's population stands at 483 people, in 177 households. Population shrank 0.2% from 484 (2022) to 483 (2024). Median age 45.9 years. (6.1y older than Washington County; 6.9y older than Minnesota). Children under 18 are 17% of the population. Population is 89% White (non-Hispanic) and 4% Hispanic or Latino. The community is relatively homogeneous (Simpson index 0.07). 71% of households are family-led. County is gaining 5,846 residents per year (2022-2023). County health: 31% adult obesity, 9% smoke.
- 2.7 people per household.
- 29% non-family households (singles, roommates).
Population & Trend
Population shrank 0.2% from 484 (2022) to 483 (2024). Estimated 2026 population: ~481 (extrapolated at -0.1%/yr trend). Census Bureau Vintage estimate: 480.
| Census data vintage | 2024 |
|---|---|
| Population | 267,568 people |
| Annual growth rate · Population change | -0.2% |
| Annual growth rate · Population (2022) | 484 |
| Annual growth rate · Population (2024) | 483 |
| Annual growth rate · Trend category | stable |
| Population | 483 people |
| Population Estimate | 480 |
Sources: Census ACS 5-Year 2023, Table B01003 · Refreshed 2026-04-12
Age Distribution
Median age 45.9y is 7.0 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 | 45.9 years (vs Minnesota 39.0y) |
|---|---|
| Age Summary · Children Pct | 17.2% |
| Age Summary · Character | established |
| Population under 18 | 83 |
| Median age | 45.9 years (vs Minnesota 39.0y) |
Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12
Race, Ethnicity & Diversity
Of 483 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups). The Simpson diversity index is 0.07 (0 = single group, 1 = perfectly even distribution); this is read as relatively homogeneous.
| White residents | 429 |
|---|---|
| Asian residents | 2 |
| Hispanic or Latino residents | 15 |
| Diversity Index · Diversity index (Simpson) | 7.4% |
| Diversity Index · Diversity label | relatively homogeneous |
| Diversity Index · Groups counted | 3 |
| Diversity Index · Largest group share | 96.2% |
| Asian population | 0.4% |
| Hispanic or Latino population | 4.1% |
| White (non-Hispanic) population | 88.8% |
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 (8)
Citizenship & Origin
Where residents were born and their citizenship status (Census ACS). 0.4% are foreign-born — below the U.S. average of 13.9%. 2% have naturalized to U.S. citizenship.
| Residents born in this state | 370 |
|---|---|
| Residents born in another state | 103 |
| Share born in this state | 76.6% |
| Share born in another state | 23.4% |
| Native-born U.S. citizens | 21.3% |
| Foreign-born residents | 0.4% |
| Naturalized citizens | 1.7% |
| Total foreign-born residents | 6 |
| From Europe | 2 |
Households & Family Composition
177 households. Averaging 2.8 people each — larger than the U.S. average of 2.5. 71% are family households — above the U.S. share of ~65%. Of 118 families, 21% are married couples with children.
| Children under 18 | 86 |
|---|---|
| Total families | 118 |
| Married couples with children | 25 |
| Average household size | 2.75 |
| Women who gave birth (past year) | 13.2% |
| Grandparents living with grandchildren | 11 |
| Grandparents responsible for grandchildren | 7 |
| Family households | 125 households |
| Households that are families | 70.6% |
| Total households | 177 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. 12.1% moved within the county in the past year — the U.S. baseline is roughly 8–10%. The surrounding county is gaining 5,846 residents per year on net (IRS migration data).
| Moved within the county (past year) | 12.1% |
|---|---|
| Migration · People moving in (annual) | 289,706 |
| Migration · People moving out (annual) | 283,860 |
| Migration · Net migration (in − out) | 5,846 |
| Migration · Population growing | Yes |
| 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 | 27 |
|---|---|
| Disability rate | 5.8% |
Other
| Congressional District · District | 4 |
|---|---|
| Congressional District · Formatted | MN-04 |
| Congressional District · Congress | 118th |
| Cdc Birth Rate · Fips | 27,163 |
| Cdc Birth Rate · State Fips | 27 |
| Cdc Birth Rate · County Fips | 163 |
| Cdc Birth Rate · County | Washington |
| Cdc Birth Rate · Birth Rate | 5.0% |
| Cdc Birth Rate · Lower Ci | 4.30 |
| Cdc Birth Rate · Upper Ci | 5.80 |
| Cdc Mortality · Fips | 27,163 |
| Cdc Mortality · County | Washington County |
| Cdc Mortality · Urban Rural | Large fringe metro |
| Cdc Mortality · Total Deaths 2020 2023 | 5,777 |
| Cdc Vaccination · Fips | 27,163 |
| Cdc Vaccination · County | Washington County |
| Cdc Vaccination · Dose1 Pop Pct | 79.7% |
| Cdc Vaccination · Series Complete Pct | 74.0% |
| Cdc Vaccination · Booster Pct | 68.8% |
| Cdc Vaccination · Population 2019 | 262,440 |
| Cdc Vaccination · Metro Status | Metro |
| Family Score · Score | 10 |
| Family Score · Schools | 20 |
| Family Score · Children Pct | 17.2% |
| Family Score · Rating | excellent |
| Town Summary · Key Facts | population 483, stable, established, affluent, mixed |
| Town Summary · Population | 483 people |
| Town Summary · County | Washington County |
Sources: Census place-to-CD118 crosswalk (place_fips) · federal dataset cascade