St. Ignace: Demographics & People
2,463 people call St. Ignace home, in 1,171 households. Population grew 2.2% from 2,409 (2022) to 2,463 (2024). Median age 48.8 years. (4.2y younger than Mackinac County; 8.5y older than Michigan). Children under 18 are 14% of the population. Population is 46% White (non-Hispanic) and 16% Black. 46% of households are family-led. County health: 38% adult obesity, 17% smoke.
- 2.1 people per household.
- 54% non-family households (singles, roommates).
Population & Trend
Population grew 2.2% from 2,409 (2022) to 2,463 (2024) — about 3.7× the recent U.S. annual rate of ~0.6%/yr. Estimated 2026 population: ~2,518 (extrapolated at 1.1%/yr trend). Census Bureau Vintage estimate: 2,593.
| Census data vintage | 2024 |
|---|---|
| Population | 10,834 people |
| Annual growth rate · Population change | 2.2% |
| Annual growth rate · Population (2022) | 2,409 |
| Annual growth rate · Population (2024) | 2,463 |
| Annual growth rate · Population growing | Yes |
| Annual growth rate · Trend category | growing |
| Population | 2,463 people |
| Population Estimate | 2,593 |
Sources: Census ACS 5-Year 2023, Table B01003 · Refreshed 2026-04-12
Age Distribution
Median age 48.8y is 9.9 years older than the U.S. median (38.9y). Children under 18 make up 14% — below the U.S. share of ~22%.
| Age Summary · Median age | 48.8 years (vs Michigan 40.3y) |
|---|---|
| Age Summary · Children Pct | 13.8% |
| Age Summary · Character | established |
| Population under 18 | 339 |
| Median age | 48.8 years (vs Michigan 40.3y) |
Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12
Race, Ethnicity & Diversity
Of 2,463 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups).
| White residents | 1,147 |
|---|---|
| Black residents | 317 |
| Asian residents | 96 |
| Hispanic or Latino residents | 52 |
| Diversity Index · Simpson Index | 64.5% |
| Diversity Index · Interpretation | highly diverse |
| Asian population | 2.2% |
| Black population | 15.9% |
| Hispanic or Latino population | 1.8% |
| White (non-Hispanic) population | 46.5% |
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). 0.3% are foreign-born — below the U.S. average of 13.9%. 17% have naturalized to U.S. citizenship.
| Residents born in this state | 1,860 |
|---|---|
| Residents born in another state | 182 |
| Share born in this state | 75.5% |
| Share born in another state | 24.5% |
| Native-born U.S. citizens | 7.4% |
| Foreign-born residents | 0.3% |
| Naturalized citizens | 16.8% |
| Total foreign-born residents | 280 |
| From Europe | 15 |
| From Africa | 55 |
Households & Family Composition
1,171 households. Averaging 2.0 people each — smaller than the U.S. average of 2.5. 46% are family households — below the U.S. share of ~65%. Of 543 families, 21% are married couples with children.
| Children under 18 | 332 |
|---|---|
| Total families | 543 |
| Married couples with children | 113 |
| Single-parent households | 26 |
| Average household size | 2.03 |
| Women who gave birth (past year) | 15.6% |
| Grandparents living with grandchildren | 63 |
| Grandparents responsible for grandchildren | 8 |
| Family households | 533 households |
| Households that are families | 45.5% |
| Total households | 1,171 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. 15.0% moved within the county in the past year — the U.S. baseline is roughly 8–10%.
| Moved within the county (past year) | 15.0% |
|---|---|
| Migration · People moving in (annual) | 10,808 |
| Migration · People moving out (annual) | 10,852 |
| Migration · Net migration (in − out) | -44 |
| 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 | 221 |
|---|---|
| Disability rate | 10.4% |
Group Quarters
Group quarters are non-household living arrangements counted by the Census — college dormitories, nursing homes, military barracks, group homes, correctional facilities, and similar institutional or shared housing. 121 residents live in group quarters (4.9% of population).
| Living in group quarters | 121 |
|---|
Other
| Congressional District · District | 1 |
|---|---|
| Congressional District · Formatted | MI-01 |
| Congressional District · Congress | 118th |
| Cdc Birth Rate · Fips | 26,097 |
| Cdc Birth Rate · State Fips | 26 |
| Cdc Birth Rate · County Fips | 97 |
| Cdc Birth Rate · County | Mackinac |
| Cdc Birth Rate · Birth Rate | 14.1% |
| Cdc Birth Rate · Lower Ci | 8.90 |
| Cdc Birth Rate · Upper Ci | 21.00 |
| Cdc Mortality · Fips | 26,097 |
| Cdc Mortality · County | Mackinac County |
| Cdc Mortality · Urban Rural | Noncore |
| Cdc Mortality · Total Deaths 2020 2023 | 429 |
| Cdc Vaccination · Fips | 26,097 |
| Cdc Vaccination · County | Mackinac County |
| Cdc Vaccination · Dose1 Pop Pct | 84.6% |
| Cdc Vaccination · Series Complete Pct | 76.3% |
| Cdc Vaccination · Booster Pct | 50.7% |
| Cdc Vaccination · Population 2019 | 10,799 |
| Cdc Vaccination · Metro Status | Non-metro |
| Family Score · Score | 1.50 |
| Family Score · Schools | 1 |
| Family Score · Children Pct | 13.8% |
| Family Score · Rating | limited |
| Town Summary · Key Facts | population 2,463, growing, established, middle-class, mixed |
| Town Summary · Population | 2,463 people |
| Town Summary · County | Mackinac County |
Sources: Census place-to-CD118 crosswalk (place_fips) · federal dataset cascade