Lyon County is a county in the U.S. state of Minnesota. As of the 2020 census, the population was 25,269. Its county seat is Marshall.

Lyon County comprises the Marshall Micropolitan Statistical Area.

History

The county was established by two acts of the Minnesota state legislature, dated March 6, 1868, and March 2, 1869. The county seat was designated as Marshall. The county was named for Nathaniel Lyon, an Army officer who served in the Dakota and Minnesota territories before being killed in the Civil War in 1861. He had achieved the rank of general by his death. The county was much larger until an act passed on March 6, 1873, made the western 43% the new Lincoln County.

Geography

The Yellow Medicine River flows northeast through the upper portion of the county, the Redwood River flows northeast through the central part, and the Cottonwood River flows northeast through the lower part. The county's terrain consists of low rolling hills, etched by drainages and gullies. It slopes to the north and east, with its highest point near its southwest corner, at 1,729 ft (527 m) ASL. The county has a total area of 722 square miles (1,870 km2), of which 715 square miles (1,850 km2) is land and 7.1 square miles (18 km2) (1.0%) is water.

Soils of Lyon County

Lakes

Source:

  • Clear Lake
  • Cottonwood Lake
  • East Twin Lake
  • Goose Lake
  • Island Lake
  • Lady Slipper Lake
  • Lake Marshall
  • Lake of the Hill
  • Lake Yankton
  • Lone Tree Lake (part)
  • Long Lake (part)
  • McKay Lake
  • North Twin Lake
  • Rock Lake
  • School Grove Lake (part)
  • Sham Lake
  • South Twin Lake
  • Swift Lake
  • West Twin Lake
  • Wood Lake

Major highways

Airports

Source:

  • Southwest Minnesota Regional Airport (MML)
  • Tracy Municipal Airport (TKC)

Adjacent counties

Protected areas

Source:

  • Camden State Park
  • Gadwall State Wildlife Management Area
  • Garvin State Park
  • Grandview State Wildlife Management Area
  • Greenhead State Wildlife Management Area
  • Glynn Prairie Scientific and Natural Area
  • Shelburne State Wildlife Management Area
  • Vallers State Wildlife Management Area

Demographics

Historical population
CensusPop.Note%±
18806,257—
18909,50151.8%
190014,59153.6%
191015,7227.8%
192018,83719.8%
193019,3282.6%
194021,56911.6%
195022,2533.2%
196022,6551.8%
197024,2737.1%
198025,2073.8%
199024,789−1.7%
200025,4252.6%
201025,8571.7%
202025,269−2.3%
2024 (est.)25,5771.2%
U.S. Decennial Census 1790-1960 1900-1990 1990-2000

2020 census

As of the 2020 census, the county had a population of 25,269. The median age was 37.5. 25.4% of residents were under the age of 18 and 17.5% of residents were 65 years of age or older. For every 100 females there were 99.7 males, and for every 100 females age 18 and over there were 96.8 males age 18 and over.

The racial makeup of the county was 82.9% White, 3.6% Black or African American, 0.5% American Indian and Alaska Native, 5.0% Asian, <0.1% Native Hawaiian and Pacific Islander, 3.2% from some other race, and 4.7% from two or more races. Hispanic or Latino residents of any race comprised 6.9% of the population.

53.5% of residents lived in urban areas, while 46.5% lived in rural areas.

There were 10,137 households in the county, of which 29.8% had children under the age of 18 living in them. Of all households, 49.0% were married-couple households, 19.6% 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 30.9% of all households were made up of individuals and 12.5% had someone living alone who was 65 years of age or older.

There were 11,180 housing units, of which 9.3% were vacant. Among occupied housing units, 66.4% were owner-occupied and 33.6% were renter-occupied. The homeowner vacancy rate was 2.0% and the rental vacancy rate was 12.5%.

2000 census

2022 US Census population pyramid for Lyon County, from ACS 5-year estimates

As of the 2000 census, there were 25,425 people, 9,715 households, and 6,334 families in the county. The population density was 35.6 per square mile (13.7/km2). There were 10,298 housing units at an average density of 14.4 per square mile (5.6/km2). The racial makeup of the county was 93.58% White, 1.49% Black or African American, 0.31% Native American, 1.67% Asian, 0.02% Pacific Islander, 1.89% from other races, and 1.04% from two or more races. 3.97% of the population were Hispanic or Latino of any race. 33.9% were of German, 15.5% Norwegian and 10.5% Belgian ancestry.

There were 9,715 households, of which 33.0% had children under 18 living with them, 55.1% were married couples living together, 7.1% had a female householder with no husband present, and 34.8% were non-families. 27.9% of all households were made up of individuals, and 12.4% had someone living alone who was 65 or older. The average household size was 2.49 and the average family size was 3.09.

The county population contained 26.2% under the age of 18, 13.3% from 18 to 24, 26.5% from 25 to 44, 19.5% from 45 to 64, and 14.6% who were 65 or older. The median age was 34. For every 100 females there were 95.7 males. For every 100 females 18 and older, there were 93.2 males.

The median income for a household in the county was $38,996, and the median income for a family was $48,512. Males had a median income of $32,102 versus $21,445 for females. The per capita income was $18,013. About 6.3% of families and 10.1% of the population was below the poverty line, including 10.0% of those under 18 and 12.7% of those 65 and older.

Communities

Cities

Unincorporated communities

Townships

Politics

Lyon County is a Republican stronghold. In only one national election since 1980 has it selected the Democratic nominee (as of 2024).

United States presidential election results for Lyon County, Minnesota
YearRepublicanDemocraticThird party(ies)
No.%No.%No.%
18921,06850.88%48623.15%54525.96%
18961,62352.83%1,35143.98%983.19%
19001,84464.61%87930.80%1314.59%
19042,39481.82%33011.28%2026.90%
19081,61856.69%1,04336.55%1936.76%
191246015.65%1,06836.34%1,41148.01%
19161,38938.97%1,89353.11%2827.91%
19204,55773.16%1,23219.78%4407.06%
19243,51953.70%3345.10%2,70041.20%
19284,05854.93%3,27444.32%560.76%
19322,26430.67%4,98967.57%1301.76%
19362,55130.28%5,16361.29%7108.43%
19404,30544.96%5,23454.66%360.38%
19443,61743.60%4,64055.94%380.46%
19483,05432.89%6,14466.16%880.95%
19526,01559.74%4,03040.02%240.24%
19565,18855.27%4,19044.64%80.09%
19604,74046.00%5,55053.86%150.15%
19643,16532.22%6,64967.69%80.08%
19684,33143.46%5,31753.35%3183.19%
19725,82050.04%5,61448.27%1961.69%
19765,03640.42%7,12257.17%3002.41%
19805,85245.33%5,62643.58%1,43311.10%
19847,17056.64%5,38942.57%1000.79%
19885,96950.86%5,65748.20%1100.94%
19924,59137.25%4,48136.36%3,25226.39%
19964,93242.97%5,06244.11%1,48312.92%
20006,08752.98%4,73741.23%6655.79%
20047,20356.84%5,29241.76%1781.40%
20086,31549.69%6,11048.08%2832.23%
20126,59453.23%5,46544.12%3292.66%
20167,25659.40%3,82531.31%1,1349.28%
20207,97961.89%4,63435.94%2802.17%
20248,40064.67%4,28432.98%3062.36%

See also

External links

44°25′N 95°50′W/44.41°N 95.84°W/ 44.41; -95.84