Carlton County, Minnesota


Carlton County is a county in the State of Minnesota, formed in 1857. As of the 2020 census, the population was 36,207. Its county seat is Carlton. Part of the Fond du Lac Indian Reservation lies in northeastern Carlton County.
Carlton County is part of the Duluth, MN–WI Metropolitan Statistical Area.

Geography

Carlton County lies on Minnesota's eastern edge. Its eastern boundary abuts Wisconsin. The Saint Louis River flows east-southeast through the county, discharging into Lake Superior. The Moose Horn River flows southwest through the county, discharging into the Kettle River. The Nemadji River and the South Fork Nemadji River flow east through the county, meeting a few miles east of its eastern boundary before reaching Lake Superior. The county terrain consists of low rolling hills, heavily wooded, and slopes to the several river valleys. The county's northwest corner lies at ASL, and a small hill west of Rogers Lake rises to ASL.
The county has an area of, of which is land and is water.

Major highways

Under a 1854 Treaty of La Pointe the Fond du Lac Indian Reservation and other reservations were established in exchange for all the Lake Superior Ojibwe land in the Arrowhead Region. Carlton County was formed and organized in 1870. It was named for Reuben B. Carlton, a member of the Minnesota Senate.
In October 1918, an immense forest fire occurred, known as the Cloquet fire. The Carlton County Historical Society hosts a permanent exhibit about the fire of 1918, along with ones about the Ojibwe of Carlton County and the Logging Era.

Climate and weather

In recent years, average temperatures in the county seat of Carlton have ranged from a low of in January to a high of in July, although a record low of was recorded in January 1912 and a record high of was recorded in July 1936. Average monthly precipitation ranged from in February to in September.

Demographics

2020 census

Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos can be of any race.
As of the 2020 census, the county had a population of 36,207. The median age was 42.0 years. 22.4% of residents were under the age of 18 and 18.7% of residents were 65 years of age or older. For every 100 females there were 109.2 males, and for every 100 females age 18 and over there were 109.7 males age 18 and over.
The racial makeup of the county was 86.0% White, 1.6% Black or African American, 6.1% American Indian and Alaska Native, 0.4% Asian, <0.1% Native Hawaiian and Pacific Islander, 0.5% from some other race, and 5.4% from two or more races. Hispanic or Latino residents of any race comprised 1.7% of the population.
36.5% of residents lived in urban areas, while 63.5% lived in rural areas.
There were 13,789 households in the county, of which 29.8% had children under the age of 18 living in them. Of all households, 51.0% were married-couple households, 18.4% were households with a male householder and no spouse or partner present, and 22.4% were households with a female householder and no spouse or partner present. About 27.5% of all households were made up of individuals and 12.0% had someone living alone who was 65 years of age or older.
There were 15,688 housing units, of which 12.1% were vacant. Among occupied housing units, 79.9% were owner-occupied and 20.1% were renter-occupied. The homeowner vacancy rate was 0.7% and the rental vacancy rate was 5.9%.

2010 census

As of the census of 2010, there were 35,386 people living in the county. 89.7% were White, 5.9% Native American, 1.4% Black or African American, 0.5% Asian, 0.2% of some other race and 2.4% of two or more races. 1.4% were Hispanic or Latino. 16.4% were of German, 13.5% Finnish, 8.9% Norwegian, 8.6% Swedish and 5.6% American ancestry.

2000 census

As of the census of 2000, there were 31,671 people, 12,064 households, and 8,408 families in the county. The population density was. There were 13,721 housing units at an average density of. The racial makeup of the county was 91.75% White, 0.97% Black or African American, 5.19% Native American, 0.35% Asian, 0.01% Pacific Islander, 0.21% from other races, and 1.52% from two or more races. 0.84% of the population were Hispanic or Latino of any race. 18.5% were of German, 16.9% Finnish, 12.5% Norwegian, 11.8% Swedish and 5.8% Polish ancestry. 95.5% spoke English, 1.8% Finnish and 1.1% Spanish as their first language.
There were 12,064 households, out of which 32.60% had children under the age of 18 living with them, 56.50% were married couples living together, 9.00% had a female householder with no husband present, and 30.30% were non-families. 26.10% of all households were made up of individuals, and 12.00% had someone living alone who was 65 years of age or older. The average household size was 2.50 and the average family size was 3.00.
The county population contained 25.40% under the age of 18, 7.70% from 18 to 24, 28.40% from 25 to 44, 23.50% from 45 to 64, and 15.10% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 102.70 males. For every 100 females age 18 and over, there were 102.20 males.
The median income for a household in the county was $40,021, and the median income for a family was $48,406. Males had a median income of $38,788 versus $25,555 for females. The per capita income for the county was $18,073. About 5.40% of families and 7.90% of the population were below the poverty line, including 8.20% of those under age 18 and 9.30% of those age 65 or over.

Communities

Cities

Local government

As of 2025, the Carlton County Sheriff is Kelly Lake. Lake has served as Sheriff since April 2005. The Carlton County Board of Commissioners has five members, each representing one district. In April 2019, Sheriff Lake and the Fond du Lac Police Department collaborated on sex trafficking training on behalf of other sheriff agencies that would be affected by the upcoming Enbridge Line 3. In 2017, Carlton County published a detailed Jail & Criminal Justice System Planning Study. As of 2019, Carlton County Public Health employs 36 county staff and 6 contract staff. It has been operating since 1920.

National

The Democratic Party historically dominated the county, carrying it by wide margins in every presidential election from 1932 to 2012, but Donald Trump lost by only 300 votes in 2016 and 307 votes in 2020, signaling a new competitiveness in Carlton County. The only other Republican to receive at least 40% of the vote since 1932 was Richard Nixon during his 49-state landslide in 1972. During the 2022 Midterm Elections, the Republican candidates for Attorney General, State Auditor, and U.S. House of Representatives won Carlton County, and Republicans also flipped State House District 11A, which includes most of Carlton County and came among other seat flips on the Iron Range despite not winning the State House overall. These wins marked a potential realignment towards the Republican Party. This trend continued in 2024, with Donald Trump becoming the first Republican since Herbert Hoover in 1928 to win the county, receiving 50.1% of the vote.