The Campbellsport post office opened in 1877, the earliest record of the town by name. Wikidata gives 1902. Another post office, New Cassel (1868), opened inside today’s town and later closed.
First census: 319 in 18802020 census: 1,907149 years
How historic is Campbellsport?
B−
More historic than 45% of U.S. towns, on its age, its old homes and the National Register.
Founding year: the first Campbellsport post office (Blevins & Helbock, CC0). Wikidata: 1902.
History grade
What drives Campbellsport’s History grade
On its age, its old homes and the National Register, Campbellsport is more historic than 45% of U.S. towns. Its share of homes from before 1940 holds the grade up; its National Register listings pull it down.
B−
HistoryA character grade: shown, never part of Campbellsport’s overall grade.
Wisconsin towns list more on the Register than most of the country (a typical Wisconsin town has 3.0 per 10,000 residents, the U.S. 2.4), so Campbellsport’s 0.0 sits below most of its state (28% of Wisconsin towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would range from C− to B. The pre-1940 share is a Census survey estimate (±4.9 points). The founding year is the first post office, not a stated founding date; Wikidata gives 1902.
Founding year: the first post office (other dates in Quick answers). Homes: Census ACS 2020–24. National Register: National Park Service, May 2026 list; each listing counted once (boundary changes and added documentation belong to their listing), and a historic district counts its contributing buildings. How TownRatings grades history →
What stands out about Campbellsport’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Fire insurance maps drew every building, what it was made of and what it was used for, so insurers could price the risk of fire. Pick a year, then a sheet.
Sanborn Map Company, via the Library of Congress. Editions published in 1930 or earlier, which are in the public domain.
The story so far
Campbellsport, in brief
Wikipedia doesn’t have a history of Campbellsport yet. The photos, dates and memories neighbors add here are how it gets written.
Campbellsport is a village in Fond du Lac County, Wisconsin, United States. The population was 1,907 at the 2020 census. It is situated in the rolling hills of the Northern Kettle Moraine in Southeastern Wisconsin and is located on State Highway 67, between US Highways 41 and 45.
Its first post office opened in 1877. Between the 2010 and 2020 censuses its population fell from 2,016 to 1,907 (-5%).
Intro from Wikipedia. Population: U.S. Census Bureau.
From the old history books
What they wrote about Campbellsport in 1880
Passages that mention Campbellsport, cut from the printed page as they were published.
The history of Fond du Lac County, Wisconsin1880 · page 736Read the page →
Read the text
Campbellsport has a large local trade. In the place are one drug store, four general stores, one elevator, two warehouses, two lumber-yards, two wagon and blacksmith shops, pumpfactory, boot and shoe store, harness-shop, barber-shop, furniture store, two tailor-shops, meatmarket, picture-gallery, cheese-factory, cigar-factory, two saloons and three hotels — Railroad House, New Cassel House and Central Hotel. S. L. Marston is the only physician and S. C.
Text read by machine from the scan; it may contain errors.
The history of Fond du Lac County, Wisconsin, containing ... war record, biographical sketches ... history of Wisconsin ... etc1880 · page 736Read the page →
Read the text
I'he JSfew Cassel and Campbellsport Literary Society, with a membership of twenty, is in a flourishing condition. Its entertainments consist of lectures, debates, readings and affairs in that line. It was first organized in 1879. ' Campbellsport has a large local trade. In the place are one drug store, four general stores, one elevator, two warehouses, two lumber-yards, two wagon and blacksmith shops, pumpfactory, boot and shoe store, harness-shop, barber-shop, furniture store, two tailor-shops, meatmarket, picture-gallery, cheese-factory, cigar-factory, two saloons and three hotels — Railroad House, New Cassel House and Central Hotel. S. L. Marston is the only physician and S. C.
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
Campbellsport, 1868 to 1955
Woven from the archive, old maps, post office records, the National Register and the people born here.
Every edition of the U.S. Geological Survey’s map of Campbellsport. Tap a year, or press play to watch the town change.
1955Campbellsport sheet · 1:62,500
U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Campbellsport.
People over time
Campbellsport, census by census
Between 319 and 2,016 people in every census since 1880.
13 censuses, 1880–2020.
U.S. Census Bureau decennial counts, from the census table on Campbellsport’s Wikipedia page.
Places that used to be
Lost post offices and burying grounds
Campbellsport’s post office has been open since 1877. Another post office, New Cassel, opened and closed inside today’s town.
New Cassel
1868–1922
Campbellsport
1877–today
18601940today
1cemetery inside Campbellsport
Union
US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
Stories next door
History across the town line
Each neighbor’s History grade, on the same three inputs.
The Campbellsport post office opened in 1877, the earliest record of the town by name (U.S. post office records). Wikidata gives 1902.
How does Campbellsport rank for history?
Campbellsport is more historic than 45% of U.S. towns. The History grade combines the town’s founding era, the share of homes built before 1940 and its National Register listings. It’s a character grade, so it isn’t part of the overall grade. How it works.
How old are the homes in Campbellsport?
25% of Campbellsport’s homes were built before 1940 (Census estimate, ±4.9 points), against a typical 12% for a Wisconsin town; the median home was built in 1963.
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).
From Wikidata and Wikipedia for famous people, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia), the US Post Offices dataset (Blevins & Helbock), the USGS Geographic Names Information System, Sanborn fire insurance maps (Library of Congress) 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.
