Jefferson County, created in 1836 from Milwaukee County, is named after Thomas Jefferson, third President of the United States. Located in southeast Wisconsin, the county seat is Jefferson.
Land Area 557.01 sq miles
Water Area 25.73 sq miles
Elevation 795 ft at Jefferson
Number of Lakes 35
Area in Lakes 3,770 acres (5.89 sq miles)
Rivers Ashippun, Bark, Crawfish, Rock, Scuppernong
Major Watershed Rock River
Geographical Province Eastern Ridges and Lowlands
Natural Vegetation East: mostly sugar maple, basswood, and elm. Southeast: area of black spruce, tamarack, and cedar. West: oak savanna. Northwest and southwest: small areas of prairie bluestem and composites. West-central: small area of sedge meadow.
Population
1930: 36,785
1970: 60,060
1980: 66,152
1990: 67,783
2000: 74,021
Border Counties
North: Dodge County
East: Waukesha County
South: Rock County, Walworth County
West: Dane County
Jefferson County Government and Local Information Resources
County Web Site
www.co.jefferson.wi.us
Board of Supervisors Board of Supervisors
County Clerk Office of the County Clerk
320 Main St
Jefferson,
WI 53549-1799 Phone: 920-674-7140
Clerk of Courts Clerk of Circuit Courts Phone: 920-674-7150
County Sheriff Sheriff
411 S. Center Ave
Jefferson
WI 53549 Phone: 920-674-7310
Health Department Health Department
N3995 Annex Road
Jefferson,
WI 53549 Phone: 920-674-7275
E-mail
Highway Department Highway Department
141 W Woolcock St
Jefferson
WI 53549 Phone: 920-674-7390
County Parks Parks Department
320 S Main St, Rm 212
Jefferson,
WI 53549 Phone: 920-674-7260
Fair Park
503 N Jackson St
Jefferson,
WI 53549 Phone: 920-674-7148
Birth & Death Certificates, Marriage Records Register of Deeds
320 Main St
Jefferson,
WI 53549-1799 Phone: 920-674-7235
Cooperative Extension UW-Extension, Jefferson County
864 Collins Rd
Jefferson,
WI 53549 Phone: 888-791-9099
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Tourism, Relocation & Business Development Fort Atkinson Area Chamber of Commerce
244 N Main St
Fort Atkinson,
WI 53538-1829 Phone: 920-563-3210
Jefferson Chamber of Commerce
108 S Main St
Jefferson,
WI 53549
Phone: 920-674-4511
E-mail
Johnson Creek Area Chamber of Commerce
PO Box 527
Johnson Creek,
WI 53038-0527 Phone: 920-699-4949
Lake Mills Area Chamber of Commerce
200C Water St
Lake Mills,
WI 53551-1632
Phone: 920-648-3585
E-mail
Palmyra Area Chamber of Commerce
PO Box 139
Palmyra,
WI 53156-0139 Phone: 414-531-4357
Waterloo Chamber of Commerce
PO Box 1
117 E Madison Street
Waterloo,
WI 53594-0001 Phone: 920-478-2500
Watertown Area Chamber of Commerce
519 E Main St
Watertown,
WI 53094-3873 Phone: 920-261-6320
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Historical and Genealogical Societies Bark River Woods Historical Society
W4080 St Rd 106
Fort Atkinson,
WI 53538-9681 Phone: 920-563-4773
Concord Historical Society
PO Box 402
Sullivan,
WI 53178 Phone: 414-593-8099
Dodge/ Jefferson County Genealogical Society
PO Box 91
Watertown,
WI 53094 E-mail
Fort Atkinson Historical Society
407 Merchants Ave
Fort Atkinson,
WI 53538 Phone: 920-563-7769
Heritage Military Music Foundation
504 S 4th St
Watertown,
WI 53094 Phone: 820-262-1864
Jefferson Historical Society
305 S Main
Jefferson,
WI 53549 Phone: 920-674-2455
Palmyra Historical Society
226 W Main St
Palmyra,
WI 53156 Phone: 414-495-4245
Waterloo Area Historical Society
PO Box 52
Waterloo,
WI 53594 Phone: 920-478-2328
Watertown Historical Society
701 S Tenth St
Watertown,
WI 53094-4833 Phone: 920-261-0275
WIGenWebProject, Jefferson County
GB2
http://www.wisconline.com/counties/jefferson/index.html
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