Rock County Wisconsin
Genealogy Trails Website
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ancestors through time by transcribing genealogical and historical data and placing it
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Rock County was created in 1836 as a territorial county on December 7,
1836 from Milwaukee County and fully organized February 19, 1839.
It is named for the Rock River, which bisects the county from north to south
1878 Rock County Map
Beloit * Brodhead (mostly in Green County) * Edgerton (partly in Dane County) *
Evansville * Janesville (county seat) * Milton *
Clinton * Orfordville * Footville
Avon * Beloit * Bradford * Center * Clinton * Fulton * Harmony * Janesville * Johnstown *
La Prairie *
Lima * Magnolia * Milton * Newark * Plymouth * Porter * Rock * Spring Valley * Turtle *
Afton * Anderson * Avon * Avalon * Bergen * Cainville * Center * Charlie Bluff *
Cooksville * Crestview *
Emerald Grove * Fairfield (partial) * Foxhollow * Fulton * Indianford * Johnstown *
Johnstown Center *
Koshkonong (partial) * Leyden * Lima Center * Magnolia * Maple Beach * Newark * Newville
Porters * Shopiere * Stebbinsville * Tiffany * Union *
Fellows * Jefferson Prairie Settlement
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