Nassau County Flag

Nassau County

State:
Florida
County Seat:
Fernandina

Nassau County's estimated 2026 population is 109,970 with a growth rate of 2.61% 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 49.57% since that time.

109,970
Total Population
169
Population Density (mi²)
37
Population Rank (State)
2.8K 2.61%
Annual Population Growth

Nassau County Population

Demographics

Economics and Income Statistics