Marine City

County:: St. Clair County
County Seat:: No
Area (mi²):: 2.156
State:: Michigan

Marine City is a city located in St. Clair County, Michigan. Marine City has a 2025 population of 3,981. Marine City is currently declining at a rate of -0.45% annually and its population has decreased by -2.21% since the most recent census, which recorded a population of 4,071 in 2020.

The average household income in Marine City is $76,466 with a poverty rate of 7.36%. The median age in Marine City is 49.2 years: 50.3 years for males, and 47.2 years for females.

Demographics

The racial composition of Marine City includes 95.11% White, and smaller percentages for other race, Two or more races, Asian, Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Other race

Two or more races

Asian

Black or African American

Native American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	3,849	95.11%
Other race	94	2.32%
Two or more races	92	2.27%
Asian	12	0.3%
Black or African American	0	0%
Native American	0	0%
Native Hawaiian or Pacific Islander	0	0%

Marine City Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Marine City's average per capita income is $44,519. Household income levels show a median of $63,156. The poverty rate stands at 7.36%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$91,563	-
Families	$80,833	$84,624
Households	$63,156	$76,466
Non Families	$50,325	$64,332

$44,519

Average Income

$63,156

Median Household Income

7.36%

Poverty Rate