Belle Fourche

County:: Butte County
County Seat:: No
Area (mi²):: 8.854
State:: South Dakota

Belle Fourche is a city located in Butte County, South Dakota. Belle Fourche has a 2025 population of 6,031. Belle Fourche is currently growing at a rate of 1.33% annually and its population has increased by 7.03% since the most recent census, which recorded a population of 5,635 in 2020.

The average household income in Belle Fourche is $83,066 with a poverty rate of 7.09%.The median age in Belle Fourche is 36.8 years: 34.5 years for males, and 38.8 years for females.

Demographics

The racial composition of Belle Fourche includes 90.52% White, and smaller percentages for other race, Native American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	5,197	90.52%
Two or more races	344	5.99%
Other race	102	1.78%
Native American	69	1.2%
Asian	18	0.31%
Native Hawaiian or Pacific Islander	11	0.19%

Belle Fourche Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Belle Fourche's average per capita income is $40,425. Household income levels show a median of $59,920. The poverty rate stands at 7.09%.

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	$103,438	-
Families	$93,558	$115,970
Households	$59,920	$83,066
Non Families	$28,620	$38,250

$40,425

Average Income

$59,920

Median Household Income

7.09%

Poverty Rate