Marshall County Flag

Marshall County

State:
Oklahoma
County Seat:
Madill

Marshall County's estimated 2026 population is 16,493 with a growth rate of 1.06% in the past year according to the most recent United States census data. Marshall County is the 44th largest county in Oklahoma. The 2010 population was 15,838 and has seen a growth of 4.14% since that time.

16,493
Total Population
44
Population Density (mi²)
44
Population Rank (State)
173 1.06%
Annual Population Growth

Marshall County Population

Demographics

Economics and Income Statistics