City in St. Clair County, Michigan · 2.2 sq mi · 1,846 people per sq mi
3,980 people live in Marine City. The typical household earns $67,683, and the median resident is 51.1 years old.
2026 projection
From 4,079 in 2020
Poverty rate 7.65%
Men 51.2 · Women 51.1
1870–2026
3,980
2026 projection
2.4% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
1870–2026
3,980
2026 projection
2.4% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 3,980 | -17 | 0.43% |
|---|---|---|---|
| 2025 | 3,997 | -9 | 0.22% |
| 2024 | 4,006 | -14 | 0.35% |
| 2023 | 4,020 | -3 | 0.07% |
| 2022 | 4,023 | -33 | 0.81% |
| 2021 | 4,056 | -23 | 0.56% |
| 2020 | 4,079 | -12 | 0.29% |
| 2019 | 4,091 | -13 | 0.32% |
| 2018 | 4,104 | -19 | 0.46% |
| 2017 | 4,123 | -24 | 0.58% |
Showing 10 of 31 years.
The 2020 row compares the April 1 Census count with the July 1, 2019 estimate (about nine months). Its Growth and Annual change therefore do not represent a full year.
Marine City has a population change lower than St. Clair County, Michigan, and the U.S.
Change from July 1, 2020 to July 1, 2025 population estimates—not annualized growth or site projections.
Source: U.S. Census Bureau. U.S. totals are summed from the 50 states and D.C.; unavailable comparisons are omitted.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 40 people).
Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 13 residents
52% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 52% | 57% | 48% |
| Never married | 20% | 21% | 20% |
| Divorced | 21% | 21% | 22% |
| Widowed | 6% | 1% | 11% |
| Separated | <1% | <1% | 0% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
14 sources