Eureka, Colorado

Eureka, Colorado
Remains of the Sunnyside Mill in Eureka, in May 2018
Eureka
Location of Eureka, Colorado.
Eureka
Eureka (Colorado)
Coordinates: 37°52′47″N 107°33′54″W / 37.8797°N 107.5651°W / 37.8797; -107.5651 (Eureka, Colorado)
CountryUnited States
StateColorado
CountySan Juan
Government
 • Typeunincorporated community
 • BodySan Juan County
Elevation
9,863 ft (3,006 m)
Time zoneUTC−07:00 (MST)
 • Summer (DST)UTC−06:00 (MDT)
ZIP code
Silverton 81433
Area codes970/748
GNIS place ID187402

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.