Town Hall Address W5609 Star School Road Fort Atkinson, WI 53538 United States- Jefferson County Website https://koshkonongwi.gov Town Clerk 920-563-4510 W5609 Star School Road Fort Atkinson, WI 53538 United States Tax Collector 920-563-4510 W5609 Star School Road Fort Atkinson, WI 53538 United States County Jefferson