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 and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
Native American	1,071	94.44%
White	43	3.79%
Two or more races	20	1.76%

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