Located in the south central corner of the Madison Region and directly along the Wisconsin-Illinois border, Rock County is one of Wisconsin’s largest counties, both in square miles and population. With diversified strengths in manufacturing, food processing, and logistics, Rock County is positioned along the I-39 corridor and offers easy marketplace access and exposure. Paired with affordable cost of living standards and high quality of life, Rock County is a powerful economic engine for the state and region.

Top private-sector employers in Rock County include Kerry, Prent Corporation, SSI Technologies, Hormel Foods, and Seneca Foods.

  • City of Janesville (county seat): 64,245
  • City of Beloit: 36,836
  • Town of Beloit: 7,659
  • Milton: 5,573
  • Edgerton: 5,550
  • Evansville: 5,312
  • Town of Janesville: 3,544
  • Fulton: 3,366
  • Brodhead: 3,240
  • Rock: 3,179

Rock County Economic Development Alliance
James Otterstein, Economic Development Manager
608.757.5598 | Email James

Sources: U.S. Census; Emsi; Wisconsin’s WORKnet; Municipality Population Estimates, Wisconsin Department of Administration, Demographic Services Center; Applied Geographic Solutions via LocateInWisconsin.

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