Elgin ( EL-jin) is a city in Cook and Kane counties in the northern part of the U.S. state of Illinois. Located roughly 35 mi (56 km) northwest of Chicago, it lies along the Fox River. As of the 2020 Census, the city had a population of 114,797, making it the sixth-largest city in Illinois.

Lake Geneva is a city in the U.S. state of Wisconsin. Located in Walworth County and situated on Geneva Lake, it is home to an estimated 8,105 people as of 2019, up from 7,651 at the 2010 census. It is located about 50 miles southwest of Milwaukee and 80 miles northwest of Chicago. Given its relative proximity to both the Chicago metropolitan and Milwaukee metropolitan areas, it has become a popular resort city that thrives on tourism.

Walworth County is a county located in the U.S. state of Wisconsin. As of the 2010 census, the population was 102,228. Its county seat is Elkhorn. The county was created in 1836 from Wisconsin Territory and organized in 1839. It is named for Reuben H. Walworth. Walworth County comprises the Whitewater-Elkhorn, WI Micropolitan Statistical Area and is included in the Milwaukee-Racine-Waukesha, WI Combined Statistical Area. Lake Geneva, the University of Wisconsin-Whitewater, and Alpine Valley Resort, and Music Theatre are located in Walworth County.

The Delevan National Wildlife Refuge is one of six refuges in the Sacramento National Wildlife Refuge Complex in the Sacramento Valley of central northern California.