Jefferson County

Ideally situated between the metropolitan areas of Milwaukee and Madison, Jefferson County boasts agricultural areas and a diversified manufacturing industry. Home to the national headquarters of Trek Bicycle, Jefferson County simmers with outdoor recreation opportunities. Each of the county’s communities exhibit a strong local character with thriving town centers serving residents at work and at play.

2010 Population: 83,683
2019 Population Estimate: 84,701

Top private-sector employers in Jefferson County include Trek Bicycle, Nasco International, Spacesaver Corp, and Generac Power Systems, Inc.

Jefferson County Major Employers

  • Watertown: 23,633
  • Whitewater: 14,722
  • Fort Atkinson: 12,443
  • Jefferson (county seat): 7,991
  • Lake Mills: 5,895
  • Ixonia: 4,517
  • Koshkonong: 3,765
  • Waterloo: 3,337
  • Oakland: 3,185
  • Johnson Creek: 2,992

THRIVE Economic Development for Jefferson and Dodge Counties
Victoria Pratt, Executive Director of Thrive Economic Development
920.674.8710 | Email Victoria

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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