Nassau County is a district of Florida.
Boundaries: United States Census Bureau, MAF/TIGER Database (https://www.census.gov/geographies/mapping-files/time-series/geo/carto-boundary-file.html) via geoBoundaries, public domain
| City of Fernandina Beach | no seat recorded | 11 k |
| Town of Callahan | no seat recorded | 1 k |
| Town of Hilliard | no seat recorded | 3 k |
Nothing has been written about Nassau County here, and neither Wikipedia nor Wikivoyage has an article we could draw one from. If you know the place, that makes you a better source than anything we have. Tell us what is worth knowing and where you got it.
We show Fernandina Beach as the capital of Nassau County. If that is wrong, tell us what it should be and where you read it.
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