Wikipedia doesn’t have a history of Castle Rock yet. The photos, dates and memories neighbors add here are how it gets written.
Castle Rock is a town in Grant County, Wisconsin, United States. The population was 240 at the 2020 census. The unincorporated community of Castle Rock is located in the town.
Its first post office opened in 1857. Between the 2010 and 2020 censuses its population fell from 248 to 240 (-3%).
Intro from Wikipedia. Population: U.S. Census Bureau.
From the old history books
What they wrote about Castle Rock in 1881
Passages that mention Castle Rock, cut from the printed page as they were published.
History of Grant County, Wisconsin1881 · page 1045Read the page →
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he followed mining and merchandising for a year and a half, then returning to Philips, Me., in 1852, where he married Clara Winship, by whom he has had nine children — Velina, Ace B., Myrta, Fred W., Arine, Harriette E., Gracie, B. J., Walter T. Came to Grant Co., Wis., in the latter part of the year 1852, locating in the village of Castle Rock, where he built a large mill -and also engaged in merchandising for a few years ; he and his brother own a large mill near Bosoobel, known as the Boscobel Mills. He enlisted in 1861 in the 12th W. V. I. as Captain of Co. K ; served from September, 1861, untD November, 1864; participated in the sieges of Vicksburg in 1863, and Atlanta in 1864, and various battles intervening ; after returning to his home at Castle Rock, where he has since lived, he was elected Chair-
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[History of Grant County, Wisconsin, preceded by a history of Wisconsin1881 · page 1045Read the page →
Read the text
he followed raining and merchandising for a year and a half, then returning to Philips, Me., in 1852, where he married Clara Winship, by whom he has had nine children — Velina, Ace B., Myrta, Fred W., Arine, Harriette E., Gracie, B. J., Walter T. Came to Grant Co., Wis., in the lacter part of the year 1852, locating in the village of Castle Rock, wUere he built a large mill and also engaged in merchandising for a few years ; he and his brother own a large mill near Boscobel, known as the Boscobel Mills. He enlisted in 1861 in the 12th W. V. I. as Captain of Co. K ; served from September, 1861, until November, 1864; participated in the sieges of Vicksburg in 1863, and Atlanta in 1864, and various battles intervening; after returning to his home at Castle Rock, where he has since lived, he was elected Chair-
Text read by machine from the scan; it may contain errors.
Scans and text from the Internet Archive. Books published in 1930 or earlier, which are in the public domain.
Timeline
Castle Rock, 1857 to 1933
Woven from the archive, old maps, post office records, the National Register and the people born here.
Founding dates: Wikidata, Wikipedia, the U.S. post office records of Blevins & Helbock (CC0) and the Census. Homes by year built: Census ACS 2020–24. National Register of Historic Places: National Park Service (list of May 22, 2026). Old photos, postcards and papers: Wikimedia Commons, the Library of Congress and other public archives, credited on each item’s page. Maps: U.S. Geological Survey historical topographic maps (via Esri) and Sanborn fire-insurance maps (Library of Congress). History text and census tables: Wikipedia (CC BY-SA 4.0). Places that used to be: USGS Geographic Names Information System (2021). How TownRatings grades history →
From U.S. Geological Survey historical maps, the US Post Offices dataset (Blevins & Helbock), the USGS Geographic Names Information System and old county and town histories (Internet Archive). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.
