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Jefferson County, Wisconsin
Genealogy, History & Facts

Jefferson County, Wisconsin Facts

Jefferson County

When was Jefferson County, WI Created?
Jefferson County was created on December 7, 1836 from Milwaukee County (Organized in February 1839). The county was named in honor of Thomas Jefferson (1743-1826), President of the United States (1801-1809) .

What is the County Seat of Jefferson County, WI?
The County Seat is located in Jefferson and the county government website is

What counties are adjacent to Jefferson County, WI?
Bordering Counties are Dodge County (north), Waukesha County (east), Walworth County (southeast), Rock County (southwest), Dane County (west).

What cities and towns are in Jefferson County, WI?
Cities and towns located in the County include Cities which consist of Fort Atkinson, Lake Mills, Waterloo, Watertown, Whitewater; Towns consist of Aztalan, Cold Spring, Concord, Farmington, Hebron, Ixonia, Jefferson, Koshkonong, Lake Mills, Milford, Oakland, Palmyra, Sullivan, Sumner; Villages consist of Cambridge, Johnson Creek, Palmyra, Sullivan.

Jefferson County, WI Vital Records

Where can find Jefferson County Birth, marriage, Divorce and Death Records?
Jefferson County vital records can be found at the Wisconsin Office of Vital Records has copies of Birth, Marriage, Divorce & Death Records reported since 1907. There is a fee for each copy requested. Please refer to the information to the Statewide Vital Records in Wisconsin for current fees and application process..

You can search online for Jefferson County Birth, Marriage, Divorce or Death Records. You can also Order Electronically Online or can download an application for Wisconsin Birth Certificate, Marriage Certificate, Divorce Certificate, Death Certificate Application to mail.

Jefferson County, WI Census Records

What Jefferson County, WI census records are available?
There are many types of census records for Jefferson County guide you in researching your family tree. Federal Population Schedules are available for 1840 (as Wisconsin Territory), 1850, 1860, 1870, 1880, 1890 (fragment, see below), 1900, 1910, 1920, 1930 and 1940.

Jefferson Co. Mortality Schedules can be obtained for 1850, 1860, 1870 and 1880. Jefferson Co. Industry and Agriculture can be found for 1850, 1860, 1870 and 1880. Jefferson Co. Union Veterans Schedules is available for 1890. One can find free down-loadable and also printable census forms to help you with your research.

There are Wisconsin State censuses from 1895 and 1905. Also the Wisconsin Compiled Census and Census Substitutes Index for 1820-1890. You can find free down-loadable and also printable census forms to help you with your research. See Also Wisconsin Census Records Research Guide

Jefferson County, WI Courthouse and Government Records

Jefferson County Courthouse

What genealogical records can I find in the Jefferson County Courthouse?
The below facts shows exactly what death, marriage, birth, property, wills, and court records are typically in Jefferson County.The date listed for each category of record is usually the earliest registration filed. The earliest date does not indicate that there are numerous records for that year and does not mean that all such events were actually registered.

It has been estimated that less than 50 percent of the vital records, for example, were prepared and submitted for permanent filing prior to 1907. Land deeds, probate, and court records generally begin in Wisconsin with the organization of the county. Prior to that date, check the County or Counties it was created from. Some counties formed from other counties transcribed their portion of property deeds to be kept with the new county deed records. See Also Wisconsin Corthouse Records Research Guide.

  • Jefferson County Courthouse (all departments listed below are located here, unless otherwise noted)
    • Address: 320 South Main Street, Jefferson, WI 53549; Phone: 920.674.7144
    • County was attached to Milwaukee County for county and judicial purposes from 1836–39. Some early records may be found there.
  • Jefferson County Register of Deeds purpose is to provide official record keeping for Records or files land record documents authorized by law, such as deeds, mortgages, satisfactions, certified survey maps, plats and Federal Tax liens. Files and indexes Birth, Death and Marriage records, Military Discharges, and issues certified copies upon request.
    • Phone: 920-674-7235
    • Birth Records: 1852
    • Marriage Records: 1844
    • Death Records: 1856
    • Land Records: 1838
  • Jefferson County Register in Probate Office has the responsibility to maintain and update files regarding probate of estates, guardianships, protective placements, adoptions and mental commitments. This is a statutory office with the position of Register in Probate filled by judicial appointment.
    • Phone: 920-674-7245
    • Probate Records: 1846
  • Jefferson County Clerk of Court Office is required to maintain a record of all documents filed with the courts, keep a record of all court proceedings, and collect various fines and forfeitures ordered by the court and specified by statute.
    • Phone: (920) 674-7150
    • Court Records: 1842
  • Public Records of the Consolidated Court Automation Programs provides access to certain public records of the circuit courts of Wisconsin
  • Wisconsin, Probate Estate Files, 1848-1935
  • U.S., Indexed Early Land Ownership and Township Plats, 1785-1898
  • BLM Land Records

Jefferson County, WI Societies and Family History Resources

What genealogical and historical societies, archives, museums, associations and libraries are available for Jefferson County, WI?
A list of Jefferson County Historical  and Genealogical Societies, Libraries, Archives. See also list of Statewide Wisconsin Archives, Historical & Genealogical Societies.

Where can I connect with other Jefferson County, WI Researchers through message boards and forums?

What other genealogical resources are available in Jefferson County, WI?
The following are web links to Genealogy, Records and Resources pertaining to Jefferson County. Many of these genealogy links fall into 3 categories: Business oriented Sites, Personal Sites or Organization Sites. Some have free access some have to have a cost. This is just a listing which has been collected or submitted. I do not endorse or promote one genealogy site above another.

Jefferson Co. WI Books, Newspapers & Publications

Jefferson Co. WI Church & Cemeteries

Jefferson Co. WI Family Websites, Pictures & Histories

Jefferson Co. WI General and History Websites

Jefferson Co. WI Maps, Atlases & Gazetteers

Jefferson Co. WI Military Records

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