Marine City is a very small city located in the state of Michigan. With a population of 4,029 people and two associated neighborhoods, Marine City is the 229th largest community in Michigan. Marine City has an unusually large stock of pre-World War II architecture, making it one of the older and more historic cities.

Marine City is a small city, and as such doesn't have a public transit system that people use to get to and from their jobs every day.

The citizens of Marine City are slightly less educated than the national average of 21.84% for the average city or town: 15.51% of adults in Marine City have a bachelor's degree or advanced degree

The per capita income in Marine City in 2018 was $35,498, which is upper middle income relative to Michigan and the nation. This equates to an annual income of $141,992 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 Native American. 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.