| Official Name: | Clear Lake, South Dakota |
| Native Name: | mdéza |
| Settlement Type: | City |
| Mapsize: | 250px |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | South Dakota |
| Subdivision Type2: | County |
| Subdivision Name2: | Deuel |
| Established Title3: | Incorporated |
| Established Date3: | 1900[1] |
| Unit Pref: | Imperial |
| Area Footnotes: | [2] |
| Area Total Km2: | 8.31 |
| Area Land Km2: | 7.85 |
| Area Water Km2: | 0.46 |
| Area Total Sq Mi: | 3.21 |
| Area Land Sq Mi: | 3.03 |
| Area Water Sq Mi: | 0.18 |
| Population As Of: | 2020 |
| Population Total: | 1218 |
| Population Density Km2: | 155.23 |
| Population Density Sq Mi: | 401.98 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Coordinates: | 44.7539°N -96.6775°W |
| Elevation Ft: | 1795 |
| Postal Code Type: | ZIP code |
| Postal Code: | 57226 |
| Area Code: | 605 |
| Blank Name: | FIPS code |
| Blank Info: | 46-12540[3] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1267331 |
Clear Lake (Dakota: mdéza;[4] "Clear") is a city in and the county seat of Deuel County, South Dakota, United States.[5] The population was 1,218 at the 2020 census.[6]
The city was named after the local Clear Lake.[7]
According to the United States Census Bureau, the city has a total area of 3.25sqmi, of which 3.07sqmi is land and 0.18sqmi is water.[8]
Clear Lake has a dry-winter humid continental climate (Köppen Dwb).
As of the census[9] of 2010, there were 1,273 people, 552 households, and 338 families living in the city. The population density was 414.7PD/sqmi. There were 617 housing units at an average density of 201/sqmi. The racial makeup of the city was 97.6% White, 0.4% African American, 0.1% Asian, 0.4% from other races, and 1.5% from two or more races. Hispanic or Latino of any race were 1.0% of the population.
There were 552 households, of which 27.4% had children under the age of 18 living with them, 49.5% were married couples living together, 8.2% had a female householder with no husband present, 3.6% had a male householder with no wife present, and 38.8% were non-families. 35.7% of all households were made up of individuals, and 18.5% had someone living alone who was 65 years of age or older. The average household size was 2.22 and the average family size was 2.85.
The median age in the city was 44.3 years. 21.7% of residents were under the age of 18; 7% were between the ages of 18 and 24; 22.3% were from 25 to 44; 25% were from 45 to 64; and 23.9% were 65 years of age or older. The gender makeup of the city was 48.8% male and 51.2% female.
As of the census of 2000, there were 1,335 people, 565 households, and 354 families living in the city. The population density was 441.4sp=usNaNsp=us. There were 607 housing units at an average density of 200.7sp=usNaNsp=us. The racial makeup of the city was 99.03% White, 0.15% Native American, 0.30% Asian, and 0.52% from two or more races. Hispanic or Latino of any race were 0.15% of the population.
There were 565 households, out of which 27.4% had children under the age of 18 living with them, 54.3% were married couples living together, 6.7% had a female householder with no husband present, and 37.2% were non-families. 33.8% of all households were made up of individuals, and 18.4% had someone living alone who was 65 years of age or older. The average household size was 2.24 and the average family size was 2.86.
In the city, the population was spread out, with 23.4% under the age of 18, 6.9% from 18 to 24, 23.1% from 25 to 44, 19.7% from 45 to 64, and 26.9% who were 65 years of age or older. The median age was 42 years. For every 100 females, there were 88.0 males. For every 100 females age 18 and over, there were 82.4 males.
As of 2000 the median income for a household in the city was $31,522 and the median income for a family was $40,859. Males had a median income of $27,250 versus $19,236 for females. The per capita income for the city was $15,755. About 3.4% of families and 9.2% of the population were below the poverty line, including 3.7% of those under age 18 and 21.7% of those age 65 or over.
Clear Lake is host to one of the largest rodeos in the area. The Crystal Springs Ranch Rodeo is held the end of June each year, drawing thousands of people to the town. It is held in the nation's most natural rodeo bowl in the Coteau Hills, a native grassland prairie formed by glaciers. During the rodeo, visitors and residents alike enjoy camping, community garage and yard sales, and a parade.