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 a large stock of pre-World War II architecture, 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.

In terms of college education, the citizens of Marine City rank slightly lower than the national average. 15.51% of adults 25 and older in Marine City have a bachelor's degree or advanced degree, while 21.84% of adults have a 4-year degree or higher in the average American community.

The per capita income in Marine City in 2022 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.