Fort Thompson

County:: Buffalo County
County Seat:: No
Area (mi²):: 10.377
State:: South Dakota

Fort Thompson is a CDP located in Buffalo County, South Dakota. Fort Thompson has a 2025 population of 1,126. Fort Thompson is currently declining at a rate of -0.88% annually and its population has decreased by -11.69% since the most recent census, which recorded a population of 1,275 in 2020.

The average household income in Fort Thompson is $46,555 with a poverty rate of 40.5%. The median age in Fort Thompson is 29.6 years: 32.1 years for males, and 29.5 years for females.

Demographics

The racial composition of Fort Thompson includes 94.44% Native American, 3.79% White, and smaller percentages for Two or more races, Black or African American, Asian, Native Hawaiian or Pacific Islander, other race and multiracial populations.

Population by Race

Native American

White

Two or more races

Black or African American

Asian

Native Hawaiian or Pacific Islander

Other race

Race	Population	Percentage (of total)
Native American	1,071	94.44%
White	43	3.79%
Two or more races	20	1.76%
Black or African American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%

Fort Thompson Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Fort Thompson's average per capita income is $33,445. Household income levels show a median of $45,313. The poverty rate stands at 40.5%.

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	$81,250	-
Families	$51,000	$50,752
Households	$45,313	$46,555
Non Families	$12,222	$31,945

$33,445

Average Income

$45,313

Median Household Income

40.5%

Poverty Rate