Swan Lake

Carroll County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 20,760. Its county seat is Carroll. The county is named in honor of Charles Carroll of Carrollton, signer of the Declaration of Independence.

Swan Lake is a 116-acre (0.5 km2) reservoir on an unnamed tributary of the Middle Raccoon River, just south and east of Carroll, Iowa. It is the southern terminus of the Sauk Rail Trail, a path linking the lake to Black Hawk State Park in Sac County.