Martin County, Minnesota

Major highways

Airports

• Fairmont Municipal Airport (FRM)

Adjacent counties

Protected areas

Source:^[5]

Lakes

Source:^[5]

2020 census

As of the 2020 census, the county had a population of 20,025. The median age was 44.9 years. 21.7% of residents were under the age of 18 and 23.4% of residents were 65 years of age or older. For every 100 females there were 97.8 males, and for every 100 females age 18 and over there were 97.1 males age 18 and over.^[14][15]

The racial makeup of the county was 91.7% White, 0.6% Black or African American, 0.4% American Indian and Alaska Native, 0.5% Asian, <0.1% Native Hawaiian and Pacific Islander, 2.6% from some other race, and 4.2% from two or more races. Hispanic or Latino residents of any race comprised 6.6% of the population.^[15]

41.9% of residents lived in urban areas, while 58.1% lived in rural areas.^[16]

There were 8,748 households in the county, of which 24.9% had children under the age of 18 living in them. Of all households, 47.5% were married-couple households, 20.0% were households with a male householder and no spouse or partner present, and 25.2% were households with a female householder and no spouse or partner present. About 33.3% of all households were made up of individuals and 16.4% had someone living alone who was 65 years of age or older.^[14]

There were 9,748 housing units, of which 10.3% were vacant. Among occupied housing units, 73.8% were owner-occupied and 26.2% were renter-occupied. The homeowner vacancy rate was 1.7% and the rental vacancy rate was 9.5%.^[14]

2000 census

As of the census of 2000, there were 21,802 people, 9,067 households, and 6,047 families in the county. The population density was 30.6 per square mile (11.8/km²). There were 9,800 housing units at an average density of 13.8 per square mile (5.3/km²). The racial makeup of the county was 97.22% White, 0.25% Black or African American, 0.10% Native American, 0.42% Asian, 0.02% Pacific Islander, 1.26% from other races, and 0.73% from two or more races. 1.93% of the population were Hispanic or Latino of any race. 51.6% were of German, 11.9% Norwegian, 5.9% Swedish and 5.0% English ancestry.

There were 9,067 households, out of which 29.80% had children under the age of 18 living with them, 56.60% were married couples living together, 7.20% had a female householder with no husband present, and 33.30% were non-families. 30.00% of all households were made up of individuals, and 15.20% had someone living alone who was 65 years of age or older. The average household size was 2.35 and the average family size was 2.92.

The county population contained 24.80% under the age of 18, 6.40% from 18 to 24, 24.90% from 25 to 44, 24.00% from 45 to 64, and 19.90% who were 65 years of age or older. The median age was 42 years. For every 100 females there were 95.30 males. For every 100 females age 18 and over, there were 91.50 males.

The median income for a household in the county was $34,810, and the median income for a family was $44,541. Males had a median income of $30,467 versus $21,780 for females. The per capita income for the county was $18,529. About 7.10% of families and 10.50% of the population were below the poverty line, including 15.10% of those under age 18 and 9.00% of those age 65 or over.

Cities

Unincorporated communities

Townships