Martin County Flag

Martin County

State:
Minnesota
County Seat:
Fairmont

Martin County's estimated 2026 population is 19,316 with a growth rate of -0.64% in the past year according to the most recent United States census data. Martin County is the 49th largest county in Minnesota. The 2010 population was 20,805 and has seen a growth of -7.16% since that time.

19,316
Total Population
27
Population Density (mi²)
49
Population Rank (State)
-124 -0.64%
Annual Population Growth

Martin County Population

Demographics

Economics and Income Statistics