Smog Bill Callahan

Callahan is a town in Nassau County, Florida, United States, adjacent to Duval County. The population was 1,526 at the 2020 census, up from 1,123 at the 2010 census. It is part of the Jacksonville, Florida Metropolitan Statistical Area. It is one location of the Northeast Florida Fair.
  • Elevation: 20 ft (6 m)
  • Country: United States
  • State: Florida
  • County: Nassau
  • Incorporated: 1911
  • ZIP code: 32011
  • Area code: 904
Data from: en.wikipedia.org