Blue Earth County, Minnesota
|Blue Earth County, Minnesota|
Location in the state of Minnesota
Minnesota's location in the U.S.
|Founded||March 5, 1853 |
|Named for||Blue Earth River|
765.90 sq mi (1,984 km²)
752.36 sq mi (1,949 km²)
13.54 sq mi (35 km²), 1.77%
74/sq mi (29/km²)
|Time zone||Central: UTC-6/-5|
Blue Earth County is part of the Mankato–North Mankato Metropolitan Statistical Area. Blue Earth County is named for the Blue Earth River and for the deposits of blue-green clay once evident along the banks of the Blue Earth River.
According to the 2000 census, the county has a total area of 765.90 square miles (1,983.7 km2), of which 752.36 square miles (1,948.6 km2) (or 98.23%) is land and 13.54 square miles (35.1 km2) (or 1.77%) is water. The Blue Earth River and Le Sueur River flow through a part of the county. The land surface is relatively flat with over 30 lakes in the county. In the northeastern part of the county there are many forests that are called big woods. The rivers that flow out of the northeastern part are surrounded by these big woods. Most of the county is grassland prairie but scattered parts of it are wet prairie. Some spots that surround the rivers are oak openings and barren brushland.
Major highways 
- Crystal Lake in Lake Crystal
- Albert Lake: in Jamestown Township
- Alice Lake: in Le Ray Township
- Armstrong Lake: in Butternut Valley Township
- Ballantyne Lake: in Jamestown Township
- Born Lake: in Le Ray Township
- Cottonwood Lake: in Medo Township
- Duck Lake: in Jamestown Township
- Eagle Lake: the southern half of the larger, northern lake is in Mankato Township and the northern half is in Lime Township with the eastern part of it just barely extending into Jamestown Township the eastern half of the smaller, southern lake is in Le Ray Township and the western half is in Mankato Township
- George Lake: in Jamestown Township
- Gilfillin Lake: mostly in Jamestown Township, but the extreme southern edge juts into in Le Ray Township
- Ida Lake: in Shelby Township
- Indian Lake: is in Le Ray Township
- Knights Lake: western half is in Mapleton Township and eastern half is in Danville Township
- Lake Crystal mostly in Judson Township, but the southern third is in Garden City Township
- Lieberg Lake: in Butternut Valley Township
- Lily Lake: Judson Township
- Loon Lake: in Garden City Township
- Long Lake: in Jamestown Township
- Lura Lake: mostly in Sterling Township, but the eastern fifth extends into Mapleton Township and a very small part extends into Faribault County
- Madison Lake: southern three-quarters is in Le Ray Township and the northern quarter is in Jamestown Township
- Mennenga Lake: Judson Township
- Mills Lake: in Garden City Township
- Minnesota Lake: almost entirely in Faribault County, but the extreme northern edge extends into in Danville Township
- Mud Lake: in Jamestown Township
- Perch Lake: mostly in Beauford Township, but the eastern fifth of the lake extends into in Medo Township
- Porter Lake: in Ceresco Township
- Rice Lake: in McPherson Township
- Severson Lake: in Medo Township
- Strom Lake: in Butternut Valley Township
- Wita Lake: in Lime Township
Adjacent counties 
||Brown County||Nicollet County||Le Sueur County|
|Watonwan County||Waseca County|
|Martin County||Faribault County|
The area of Blue Earth County was once known as the "Big Woods" and was occupied by the Dakota Indians. It was started by a French explorer, Pierre-Charles Le Sueur. He was one of the first White people in this area, arriving at the point where the Minnesota and Blue Earth rivers meet. There, he made an unsuccessful attempt to mine copper from the blue earth found in the area. The area remained under French control until 1803, but soon after was passed to the United States by the Louisiana Purchase. When Minnesota became a territory in 1849, the territorial government became interested in having the river valley for settlement. In 1850 the first steamboat trip, starting in St. Paul, traveled on the Minnesota River and came to the Blue Earth River. The first White settlers, P.K. Johnson and Henry Jackson came off the boat and settled in present day Mankato. The ratification of the Mendota and Traverse des Sioux Treaties in 1851 effectively forced the Dakota to leave the area for nearby reservations.
The county of Blue Earth was finally created after a division of the Minnesota Territory on March 5, 1853 from portions of Dakota County and free territory. It was named after the Blue Earth River. The first government officials were appointed by Alexander Ramsey, who was the territorial governor at that time. That October the first election was held for government officials with a total of 22 ballots being taken.
Unfulfilled treaty promises and starvation on the Indians reservation led to the Dakota War of 1862, which resulted in Dakota defeat and the largest mass execution in US history in Mankato. In 1868 the railroads arrived. They helped with the growth and development of many areas, including Blue Earth. The railroads allowed many different White ethnic immigrants and Yankee settlers into the area. Blue Earth has grown into a very good county for agriculture, industry, business, education, and culture, and still continues to grow today.
|2008||55% 19325||42% 14782|
|2004||50.92% 16865||47.52% 15737|
|2000||44.99% 12329||47.23% 12942|
As of the census of 2000, there were 55,941 people, 21,062 households, and 12,616 families residing in the county. The population density was 74 people per square mile (29/km²). There were 21,971 housing units at an average density of 29 per square mile (11/km²). The racial makeup of the county was 94.96% White, 1.19% Black or African American, 0.28% Native American, 1.79% Asian, 0.06% Pacific Islander, 0.69% from other races, and 1.03% from two or more races. 1.77% of the population were Hispanic or Latino of any race. 47.6% were of German, 13.6% Norwegian and 6.5% Irish ancestry according to the 2000 census.
There were 21,062 households out of which 29.10% had children under the age of 18 living with them, 48.60% were married couples living together, 7.80% had a female householder with no husband present, and 40.10% were non-families. 27.10% of all households were made up of individuals and 9.50% had someone living alone who was 65 years of age or older. The average household size was 2.46 and the average family size was 2.99.
In the county the population was spread out with 21.40% under the age of 18, 22.10% from 18 to 24, 25.60% from 25 to 44, 18.80% from 45 to 64, and 12.10% who were 65 years of age or older. The median age was 30 years. For every 100 females there were 99.10 males. For every 100 females age 18 and over, there were 97.40 males.
The median income for a household in the county was $38,940, and the median income for a family was $50,257. Males had a median income of $32,087 versus $22,527 for females. The per capita income for the county was $18,712. About 6.10% of families and 12.90% of the population were below the poverty line, including 10.50% of those under age 18 and 9.40% of those age 65 or over.
Cities and towns 
† Only a part of the city is in Blue Earth County.
Climate and weather 
|Climate chart (explanation)|
In recent years, average temperatures in the county seat of Mankato have ranged from a low of 5 °F (−15 °C) in January to a high of 83 °F (28 °C) in July, although a record low of −35 °F (−37 °C) was recorded in February 1996 and a record high of 107 °F (42 °C) was recorded in August 1988. Average monthly precipitation ranged from 0.78 inches (20 mm) in February to 5.09 inches (129 mm) in June.
See also 
- "2010 Census Redistricting Data (Public Law 94-171) Summary File". American FactFinder. United States Census Bureau. Retrieved 25 April 2011.
- "Find a County". National Association of Counties. Retrieved 2011-06-07.
- "Census 2000 U.S. Gazetteer Files: Counties". United States Census. Retrieved 2011-02-13.
- "U.S. Decennial Census". Census.gov. Retrieved March 18, 2013.
- "Annual Estimates of the Resident Population: April 1, 2010 to July 1, 2012". Retrieved March 18, 2013.
- "Monthly Averages for Mankato, Minnesota". The Weather Channel. Retrieved 2011-11-06.