Eureka is a town in Lincoln County, Montana, United States, 9 miles (14 km) south of the Canada–US border.

[3] Eureka was founded in the early 1880s as settlers moved north from Missoula and south from Canada; it was originally known as Deweyville.

[4] One of the last areas to be developed in Montana in frontier times, logging was a major draw and source of income for decades.

Eureka was once billed as the "Christmas Tree Capital of the World," with evergreens shipped to many urban points for holiday sales.

The Canadian fur-trapper and explorer David Thompson visited the area in the early 19th Century during his searches for a route to the Pacific Ocean.

In the late 1970s, Eurekans began a "Tobacco Valley Rendezvous" every year in April to commemorate Thompson's visit.

President Harry S. Truman gave a speech in Eureka on October 1, 1952, as part of a whistle-stop tour in support of Adlai Stevenson's ultimately unsuccessful presidential campaign.

According to the United States Census Bureau, the town has a total area of 1.01 square miles (2.62 km2), all land.

[7] Eureka experiences a mild microclimate, notably warmer than the nearby cities of Kalispell and Whitefish, Montana as well as Invermere and Fernie, British Columbia.

Summer afternoons are hot and sunny with low humidity, whilst winters are often cloudy but lack the extremely temperatures found nearby.

Ten Lakes Scenic Area is located approximately 45 minutes from town.

[14] Just to the west is Lake Koocanusa, a large reservoir used for every type of water recreation.

[16] Eureka hosts the Lincoln County Fair which has carnival rides, rodeos, and local booths.

KZXT is a local station airing an adult contemporary format[28] US Route 93 cuts through town from north to south.

Montana Highway 37 ends about 5 miles (8 km) north of town.