goJefferson.com Share: Computer service goJefferson.com Visit Website Request Info 235 South Main Street Jefferson, WI 53549 (920) 674-5200 LinkedIn Facebook Hours: Monday through Friday, 8 to 5. About Map About goJefferson.com provides professional computer consulting services to Jefferson County's businesses and homes. Directions At the corner of Main and Dodge in downtown Jefferson. This is the same intersection as City Hall and the old Carnegie Library. What's Nearby? Distance: 5 10 15 20 25 50 mi.