Eureka

County:: Lincoln County
County Seat:: No
Area (mi²):: 1.326
State:: Montana

Eureka is a town located in Lincoln County, Montana. Eureka has a 2025 population of 1,629. Eureka is currently growing at a rate of 3.04% annually and its population has increased by 17.36% since the most recent census, which recorded a population of 1,388 in 2020.

The average household income in Eureka is $58,947 with a poverty rate of 29.35%. The median age in Eureka is 37.7 years: 41.6 years for males, and 35.3 years for females.

Demographics

The racial composition of Eureka includes 87.95% White, and smaller percentages for Native American, Black or African American, Asian, Native Hawaiian or Pacific Islander, other race and multiracial populations.

Population by Race

White

Two or more races

Native American

Black or African American

Asian

Native Hawaiian or Pacific Islander

Other race

Race	Population	Percentage (of total)
White	1,767	87.95%
Two or more races	201	10%
Native American	41	2.04%
Black or African American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%

Eureka Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Eureka's average per capita income is $0. Household income levels show a median of $43,750. The poverty rate stands at 29.35%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$53,819	-
Households	$43,750	$58,947
Families	$42,238	$57,905
Non Families	$26,818	$44,451

$0

Average Income

$43,750

Median Household Income

29.35%

Poverty Rate