Florida

Nassau

90,352
2020 population
1830
first census record
20
census records

About Nassau

Nassau, Florida, first appears in the United States federal census in 1830, when it recorded a population of 1,511. At the most recent census, in 2020, its population stood at 90,352.

The county's recorded population has risen across the decades to its highest level in 2020.

On the ground today, 6 documented military engagements have been recorded within the county, among them Battle of Thomas Creek, Union Capture of Fernandina FL, Battle of Fernandina — Union capture, and 15 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
202090,352
201073,314
200057,663
199043,941
198032,894
197020,626
196017,189
195012,811
194010,826
19309,375
192011,340
191010,525
19009,654
18908,294
18806,635
18704,247
18603,644
18502,164
18401,892
18301,511
Source

Population data from the United States decennial census, U.S. Census Bureau (public domain).

Battles & engagements in Nassau

Military engagements that took place in Nassau, Florida.

Battle of Thomas Creek
1777
Union Capture of Fernandina FL
1862
Battle of Fernandina — Union capture
1862
Union Occupation of Fernandina
1862
Fort Clinch and Fernandina Union Operations
1862
Skirmish at Callahan FL
1864

Historic places in Nassau

National Register of Historic Places listings in Nassau, Florida.

Nassau County Jail
Fernandina Beach
Fairbanks House
Fernandina Beach
Tabby House
Fernandina Beach
Bailey House
Fernandina Beach
Fort Clinch
Fernandina Beach
Fernandina Beach Historic District
Fernandina Beach
Ervin's Rest
American Beach
Amelia Island Lighthouse
Fernandina Beach
Original Town of Fernandina Historic Site
Fernandina Beach
Browse all Floridahistoric sites ›

Other counties in Florida

Explore census history and historic records for more Florida counties.

BradfordBrevardBrowardCalhounCharlotteCitrusClayCollierColumbiaDeSotoDixieDuvalEscambiaFlaglerFranklinGadsdenGilchristGladesGulfHamilton
Unlimited access

Everything a full report reveals about Nassau County, Florida

This page charts the census history of Nassau County, Florida. A full Aubrey report for an address here pulls together everything the historical record holds about the ground, from the earliest settlement to the twentieth century:

Overview
An interactive map of the location with historic sites, battles and Native heritage plotted, and its full story era by era.
The Land
The historic sites and place names around the location, and how this land was settled and used.
Geology
The bedrock beneath the site, its age and rock type, reaching back millions of years.
LiDAR Terrain
Laser-scanned terrain that reveals earthworks and old features hidden in the landscape.
Conflict & War
The battles, raids and skirmishes fought near here, across every era of American conflict.
The Civil War
The Civil War on this ground, 1861 to 1865: who held it, and the battles, camps and regiments nearby.
The Soldiers
The men who marched from here in the Civil War, named and traced where the record allows.
Native Heritage
The Native nations who held this land, mapped across time from before European contact to today.
Settlement
Who claimed and held this ground, from Indigenous homelands through the colonial powers to the United States.
The Community
How the town grew, who came, and what kind of place it became, traced through the census record.
Rivers & Rail
The rivers, canals and railroads that connected this place between 1830 and 1911.
Notable People
The people born, buried or genuinely tied to this exact place, with their stories.
Historical Maps
Historic maps of the location layered over how it looks today.
Finds & Access
Museum objects tied to the area, and the laws on searching, collecting and access here.
Literature
The old books, county histories and archives that mention this place, quoted with their sources.
Spotlight
A deep dive into the most remarkable, lesser-known history of the place, traced back to the record.
Points of Interest
The most significant historic sites and landmarks near the location, and why they matter.
Timeline
The whole story of the location told era by era, from first peoples to the present day.
First month just $5.99, then $11.99 a month. Unlimited locations, cancel anytime.

Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.

Start your Nassau County, Florida report
Or see a real report first

Explore Florida records

Floridahistory ›NRHP historic sites ›Notable people from Florida›

Frequently asked about Nassau

When does Nassau first appear in the US census?
Nassau, Florida first appears in the federal census in 1830, with a recorded population of 1,511.
What is the population of Nassau?
At the most recent federal census (2020), Nassau had a recorded population of 90,352.
Were any battles fought in Nassau?
6 documented military engagements took place in Nassau, including Battle of Thomas Creek, Union Capture of Fernandina FL, Battle of Fernandina — Union capture.
How many historic places are in Nassau?
15 sites are listed on the National Register of Historic Places in Nassau, Florida.
Aubrey Research

Research the history of any US location

Aubrey searches federal archives, archaeological records, historic registers, and primary sources to build a full historical report for any address or place in the United States.

Research your locationView a free sample report