Marine City is a very small city located in the state of Michigan. With a population of 4,017 people and two associated neighborhoods, Marine City is the 229th largest community in Michigan. Much of the housing stock in Marine City was built prior to World War II, making it one of the older and more historic cities in the country.

Being a small city, Marine City does not have a public transit system used by locals to get to and from work.

The education level of Marine City citizens, measured as those with bachelor's degrees or advanced degrees, is similar to the national average for all American cities and towns. 17.14% of adults 25 and older in Marine City have a college degree.

The per capita income in Marine City in 2022 was $37,770, which is upper middle income relative to Michigan and the nation. This equates to an annual income of $151,080 for a family of four. However, Marine City contains both very wealthy and poor people as well.

The people who call Marine City home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Marine City residents report their race to be White, followed by Asian. Important ancestries of people in Marine City include German, Irish, Polish, English, and French.

The most common language spoken in Marine City is English. Other important languages spoken here include Polish and Italian.