Thief River Falls

County:: Pennington County
County Seat:: Yes
Area (mi²):: 6.003
State:: Minnesota

Thief River Falls is a city located in Pennington County, Minnesota. Thief River Falls has a 2025 population of 8,811. It is also the county seat of Pennington County. Thief River Falls is currently declining at a rate of -0.06% annually and its population has decreased by -0.28% since the most recent census, which recorded a population of 8,836 in 2020.

The average household income in Thief River Falls is $84,261 with a poverty rate of 11.31%. The median age in Thief River Falls is 38.9 years: 37.2 years for males, and 41.8 years for females.

Demographics

The racial composition of Thief River Falls includes 90.58% White, and smaller percentages for other race, Black or African American, Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Other race

Black or African American

Asian

Native American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	8,008	90.58%
Two or more races	411	4.65%
Other race	168	1.9%
Black or African American	155	1.75%
Asian	59	0.67%
Native American	40	0.45%
Native Hawaiian or Pacific Islander	0	0%

Thief River Falls Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Thief River Falls' average per capita income is $49,480. Household income levels show a median of $65,244. The poverty rate stands at 11.31%.

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	$106,775	-
Families	$94,388	$111,783
Households	$65,244	$84,261
Non Families	$46,612	$53,401

$49,480

Average Income

$65,244

Median Household Income

11.31%

Poverty Rate