Go to Towns main page Visit stateline towns. 149,784 Population size ranks 8 th in the state. The county attracted settlers from New England and Europe, and was an integral part of the Underground Railroad operated by abolitionists. Business and Industry Rock County is one of the most productive manufacturing sectors in the state, specializing in snack foods, automobile, tool and die, and electronics. Also, strong agriculture, retail, tourism, and service industries.
Rock County boasts a hardworking, well-trained labor force and excellent transportation routes.
Attractions Lima Marsh Wildlife Area, Turtle Creek Wildlife Area, Avon Bottoms Wildlife Area, Evansville Wildlife Area, Storr's Lake Wildlife Area. Aboretums in Janesville and Clinton, indian mounds in Beloit, historical sites in Beloit, Janesville, Edgerton, Milton, Janesville, Evansville, and Cooksville. Recreation Home to over 10 golf courses of varying difficulty in Janesville, Emerald Grove, Edgerton, Evansville, Janesville, Milton, and Beloit. Walleye, white bass, catfish, northern pike, and muskie, and lake perch can be found in Lakes Konskonong, Gibbs, Clear, Storr's, and also in the Rock River, Yahara River, Turtle Creek and Allen Creek. Boating, sailing, waterskiing, canoeing, sailboarding available on Lake Koshkonong, Rock River, Clear Lake, Gibbs Lake, Lake Leota, Storr's Lake, Kiwanis Pond, Sugar River, Turtle Creek, Bass Creek and the Yahara River.