Ghost TownUSA

Ghost Town · Florida

Fort Jefferson

A ghost town of unknown status in Monroe County, Florida.

By the Ghost Town USA research team Last reviewed September 2026

Boomtowns are built on optimism; ghost towns are what's left when it runs out. Welcome to Fort Jefferson. Fort Jefferson is a former coastal fortress in Florida.

Monroe County holds 9 documented ghost towns, including Chevelier, Craig, Flamingo — Fort Jefferson keeps them company on the map.

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The story of Fort Jefferson

Florida's ghost towns are railroad towns Flagler built, 1920s land-boom subdivisions that busted, and phosphate and turpentine camps.

Fort Jefferson is a former coastal fortress in Florida. Fort Jefferson may also refer to: Fort Jefferson (Ohio), a historic fort Fort Jefferson, Ohio, an unincorporated community Fort Jefferson (Kentucky), a historic site

Fort Jefferson started with soldiers before it had settlers — the frontier's usual order of operations.

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What you'll find today

The on-the-ground condition of Fort Jefferson is unverified — it's listed here with unknown status. That could mean standing buildings, or an empty field. Go prepared for either, and consider sharing what you find so the record improves.

Nobody has confirmed the access situation, so treat any visit as reconnaissance: verify land ownership first, and be ready to admire from the road.

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Getting there

Here's the honest truth: access to Fort Jefferson is unverified. We couldn't confirm whether the site sits on public land, private property, or something in between — so verify land ownership and local rules before visiting, and respect private property at all times. The mapped point for Fort Jefferson is roughly 24.6286, -82.8732 — use it as a starting point and cross-reference a current topographic map before leaving pavement.

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Good to know

Ghost-town etiquette is simple: take only photographs. Removing artifacts is illegal on public lands and disrespectful everywhere else — and on federal land it can be a serious offense.

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Survey Map

Approximate position — verify access locally before visiting

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Fort Jefferson FAQs

01Where is Fort Jefferson located?
Fort Jefferson is in Monroe County, Florida, mapped near 24.6286, -82.8732.
02What county is Fort Jefferson in?
Fort Jefferson sits in Monroe County, Florida. See our full guide to ghost towns in Monroe County for its neighbors.
03What is the history of Fort Jefferson?
Fort Jefferson is a former coastal fortress in Florida. Fort Jefferson may also refer to: Fort Jefferson (Ohio), a historic fort Fort Jefferson, Ohio, an unincorporated community Fort Jefferson (Kentucky), a historic site
04What remains at Fort Jefferson today?
The on-the-ground condition of Fort Jefferson is unverified — it's listed here with unknown status. That could mean standing buildings, or an empty field. Go prepared for either, and consider sharing what you find so the record improves.
05Can you visit Fort Jefferson?
Here's the honest truth: access to Fort Jefferson is unverified. We couldn't confirm whether the site sits on public land, private property, or something in between — so verify land ownership and local rules before visiting, and respect private property at all times. The mapped point for Fort Jefferson is roughly 24.6286, -82.8732 — use it as a starting point and cross-reference a current topographic map before leaving pavement.

Sources: account based on Wikipedia (“Fort Jefferson (disambiguation)”), CC BY-SA.

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More in Monroe County

All 9 ghost towns in Monroe County →