Sun Valley Lake is an unincorporated community and census-designated place in Ringgold County, Iowa, United States.

The community is located in northeastern Ringgold County on the shores of its namesake lake.

[4] As of the census of 2020,[6] there were 187 people, 98 households, and 71 families residing in the community.

There were 512 housing units at an average density of 249.6 per square mile (96.4/km2).

This article about the geography of Ringgold County, Iowa is a stub.