Rock County is located in the south-central part of the state along the southern border and is home to approximately 160,000 residents. The County is a combination of vibrant rural communities and burgeoning urban areas including six cities, three villages, 20 towns, and multiple unincorporated hamlets. Centrally located, the City of Janesville is the largest municipality and serves as the County Seat.

Rock County Public Health is a Level III public health agency comprised of Environmental Health, Chronic Disease & Injury Prevention, Communicable Disease, and Maternal, Child, & Family Health Divisions. The Environmental Health Division licenses and inspects approximately 1,000 facilities. This includes food establishments, lodging establishments, pools, beaches, campgrounds, mobile home parks, tattoo and body piercing establishments.

Mission: To improve population health outcomes and remove barriers through community partnerships.