Map of Nassau County Florida

Nassau County is the northeasternmost county of the U.S. state of Florida. The United States Census Bureau estimates that the county's population was 101,501 on July 1, 2023, up from 90,352 at the 2020 census.
  • Country: United States
  • State: Florida
  • Founded: December 29, 1824
  • Named for: Duchy of Nassau
  • Seat: Fernandina Beach
  • Largest community: Yulee
  • Congressional district: 4th
Data from: en.wikipedia.org