Nassau County Flag

Nassau County

State:
Florida
County Seat:
Fernandina

Nassau County's estimated 2025 population is 108,851 with a growth rate of 3.49% in the past year according to the most recent United States census data. Nassau County is the 37th largest county in Florida. The 2010 population was 73,526 and has seen a growth of 48.04% since that time.

108,851
Total Population
168
Population Density (mi²)
37
Population Rank (State)
3.7K 3.49%
Annual Population Growth

Nassau County Population

Demographics

Economics and Income Statistics