Oslo

County:: Marshall County
County Seat:: No
Area (mi²):: 0.371
State:: Minnesota

Oslo is a city located in Marshall County, Minnesota. Oslo has a 2025 population of 234. Oslo is currently declining at a rate of -0.85% annually and its population has decreased by -4.1% since the most recent census, which recorded a population of 244 in 2020.

The average household income in Oslo is $85,927 with a poverty rate of 1.35%.The median age in Oslo is 32.3 years: 32.9 years for males, and 25.9 years for females.

Demographics

The racial composition of Oslo includes 84.85% White, 13.8% other race, and smaller percentages for Two or more races and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	252	84.85%
Other race	41	13.8%
Two or more races	4	1.35%

Oslo Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Oslo's average per capita income is $50,481. Household income levels show a median of $76,250. The poverty rate stands at 1.35%.

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
Families	$90,833	$99,070
Married Families	$89,063	-
Households	$76,250	$85,927
Non Families	$51,250	$67,856

$50,481

Average Income

$76,250

Median Household Income

1.35%

Poverty Rate