what county is eureka mt
Sponsored Topics. Eureka is a town in Lincoln County, Montana, United States. The population was 1,017 at the 2000 census. Eureka is located at 48Â°52â²49â³N 115Â°2â²58â³W / 48.88028Â°N 115.04944Â°W / 48.88028; -115.04944 (48.880265, -115.049325), approximately 66 miles (106 km) from Kalispell.