Ghost Town USA

Ghost Town · Colorado

Eureka

A foundations-only ghost town in San Juan County, Colorado.

By the Ghost Town USA research team · Last reviewed September 2026

Eureka ghost town, Colorado
Photo: D&RG Railfan (CC BY 3.0) via Wikimedia Commons

Quick Facts

Status
Foundations Only
Access
Public Access
Coordinates
37.8800, -107.5700

Every ghost town is a bet that didn't pay off. Eureka just shows the receipt more honestly than most. Eureka is an extinct mining town in northeastern San Juan County, Colorado, United States, along the Animas River, between Silverton and Animas Forks. The town derives its name from the Greek interjection Eureka!

San Juan County holds 10 documented ghost towns, including Animas Forks, Arastra, Chattanooga — Eureka keeps them company on the map.

The story of Eureka

Colorado's high-country ghost towns sit at altitudes that would give a flatlander nosebleeds — silver camps killed by an 1893 vote in Washington.

Eureka is an extinct mining town in northeastern San Juan County, Colorado, United States, along the Animas River, between Silverton and Animas Forks. The town derives its name from the Greek interjection Eureka! The Eureka post office operated from August 9, 1875, until April 30, 1942.

What you'll find today

Little stands at Eureka today beyond foundations and scattered traces. Foundation-only sites reward visitors who enjoy reading a landscape — bring an old plat map or historic photo if you can find one, and the vanished streets start to reappear.

Public access makes Eureka one of the easier ghost towns to actually stand in — though "public" in ghost-town country can still mean miles of dirt road, so check recent trip reports first.

Getting there

Eureka is publicly accessible — but give the word "accessible" some respect. Out here it can still mean miles of unmaintained dirt road. Check recent trip reports, carry extra water and a spare tire, download offline maps, and let someone know your route. The mapped point for Eureka is roughly 37.8800, -107.5700 — use it as a starting point and cross-reference a current topographic map before leaving pavement.

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.

The ground itself demands respect: open mine shafts, collapsing floors, and old wells hide in tall grass, cell service is often nonexistent, and help can be hours away. Tell someone your plans, pack more water than you think you'll need — and save the early morning or late afternoon light for your camera.

Dig deeper

Want the full story? The Wikipedia article on "Eureka, Colorado" covers Eureka in more depth — find the link in Sources below. County archives, historic newspaper collections, and the state historical society are the next stops after that: plat maps, census rolls, and old photographs fill in what a short visit can't. If you make the trip, consider sharing your photos and notes — firsthand reports are how the record of Eureka gets better.

Eureka FAQs

Where is Eureka located?
Eureka is in San Juan County, Colorado, mapped near 37.8800, -107.5700.
What county is Eureka in?
Eureka sits in San Juan County, Colorado. See our full guide to ghost towns in San Juan County for its neighbors.
What is the history of Eureka?
Eureka is an extinct mining town in northeastern San Juan County, Colorado, United States, along the Animas River, between Silverton and Animas Forks. The town derives its name from the Greek interjection Eureka!
What remains at Eureka today?
Little stands at Eureka today beyond foundations and scattered traces. Foundation-only sites reward visitors who enjoy reading a landscape — bring an old plat map or historic photo if you can find one, and the vanished streets start to reappear.
Can you visit Eureka?
Eureka is publicly accessible — but give the word "accessible" some respect. Out here it can still mean miles of unmaintained dirt road. Check recent trip reports, carry extra water and a spare tire, download offline maps, and let someone know your route. The mapped point for Eureka is roughly 37.8800, -107.5700 — use it as a starting point and cross-reference a current topographic map before leaving pavement.

Sources: description based on Wikipedia (“Eureka, Colorado”), CC BY-SA.

More Ghost Towns in San Juan County

See all 10 ghost towns in San Juan County, Colorado