| Official Name: | Sun Valley Lake, Iowa |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Iowa |
| Pushpin Label: | Sun Valley Lake |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Iowa |
| Subdivision Type2: | County |
| Subdivision Name2: | Ringgold |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 7.01 |
| Area Land Km2: | 5.31 |
| Area Water Km2: | 1.70 |
| Area Total Sq Mi: | 2.71 |
| Area Land Sq Mi: | 2.05 |
| Area Water Sq Mi: | 0.66 |
| Population As Of: | 2020 |
| Population Total: | 187 |
| Population Density Km2: | 35.19 |
| Population Density Sq Mi: | 91.13 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 1139 |
| Coordinates: | 40.85°N -94.0683°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 50074[2] |
| Area Code: | 641 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 2585488 |
Sun Valley Lake is an unincorporated community and census-designated place in Ringgold County, Iowa, United States. Its population was 187 as of the 2020 census. The community is located in northeastern Ringgold County on the shores of its namesake lake.
According to the U.S. Census Bureau, the community has an area of, of which is land and is water.[3]
As of the census of 2020,[4] there were 187 people, 98 households, and 71 families residing in the community. The population density was 91.1 inhabitants per square mile (35.2/km2). There were 512 housing units at an average density of 249.6 per square mile (96.4/km2). The racial makeup of the community was 96.3% White, 0.5% Black or African American, 0.0% Native American, 0.0% Asian, 0.0% Pacific Islander, 0.5% from other races and 2.7% from two or more races. Hispanic or Latino persons of any race comprised 0.5% of the population.
Of the 98 households, 12.2% of which had children under the age of 18 living with them, 69.4% were married couples living together, 4.1% were cohabitating couples, 16.3% had a female householder with no spouse or partner present and 10.2% had a male householder with no spouse or partner present. 27.6% of all households were non-families. 25.5% of all households were made up of individuals, 15.3% had someone living alone who was 65 years old or older.
The median age in the community was 66.1 years. 7.0% of the residents were under the age of 20; 3.2% were between the ages of 20 and 24; 12.3% were from 25 and 44; 27.3% were from 45 and 64; and 50.3% were 65 years of age or older. The gender makeup of the community was 51.9% male and 48.1% female.