Lake Crystal is a city in Blue Earth County, Minnesota, United States. The population was 2,549 at the 2010 census. It is part of the Mankato–North Mankato Metropolitan Statistical Area.
Lake Crystal was platted in 1869. The city took its name from nearby Crystal Lake. A post office has been in operation in Lake Crystal since 1869. Lake Crystal was incorporated as a city in 1870.
According to the United States Census Bureau, the city has a total area of 1.72 square miles (4.45 km2), all of it land. The city has four lakes close by: Crystal Lake, Lily Lake, Mills Lake, and Loon Lake.
Minnesota State Highway 60 serves as a main route in the city.
As of the census of 2010, there were 2,549 people, 1,063 households, and 661 families residing in the city. The population density was 1,482.0 inhabitants per square mile (572.2/km2). There were 1,143 housing units at an average density of 664.5 per square mile (256.6/km2). The racial makeup of the city was 97.3% White, 0.8% African American, 0.2% Native American, 0.7% Asian, 0.1% Pacific Islander, 0.2% from other races, and 0.7% from two or more races. Hispanic or Latino of any race were 1.3% of the population.
There were 1,063 households of which 33.3% had children under the age of 18 living with them, 50.0% were married couples living together, 8.5% had a female householder with no husband present, 3.8% had a male householder with no wife present, and 37.8% were non-families. 31.7% of all households were made up of individuals and 13.5% had someone living alone who was 65 years of age or older. The average household size was 2.40 and the average family size was 3.03.
The median age in the city was 35.6 years. 26.8% of residents were under the age of 18; 6.5% were between the ages of 18 and 24; 27.9% were from 25 to 44; 25.2% were from 45 to 64; and 13.5% were 65 years of age or older. The gender makeup of the city was 47.9% male and 52.1% female.
As of the census of 2000, there were 2,420 people, 940 households, and 652 families residing in the city. The population density was 1,361.3 people per square mile (524.9/km²). There were 973 housing units at an average density of 547.3 per square mile (211.1/km²). The racial makeup of the city was 97.98% White, 0.29% African American, 0.45% Native American, 0.29% Asian, 0.04% Pacific Islander, 0.45% from other races, and 0.50% from two or more races. Hispanic or Latino of any race were 0.74% of the population.
There were 940 households out of which 34.8% had children under the age of 18 living with them, 57.8% were married couples living together, 8.3% had a female householder with no husband present, and 30.6% were non-families. 26.4% of all households were made up of individuals and 14.8% had someone living alone who was 65 years of age or older. The average household size was 2.52 and the average family size was 3.05.
In the city, the population was spread out with 27.4% under the age of 18, 7.9% from 18 to 24, 28.3% from 25 to 44, 18.9% from 45 to 64, and 17.4% who were 65 years of age or older. The median age was 35 years. For every 100 females there were 97.2 males.
The median income for a household in the city was $39,912, and the median income for a family was $47,143. Males had a median income of $31,970 versus $21,548 for females. The per capita income for the city was $17,454. About 4.5% of families and 5.4% of the population were below the poverty line, including 6.8% of those under age 18 and 8.2% of those age 65 or over.