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AHistory
History · Delavan

Delavan’s post office opened in 1837, and 24% of its homes were built before 1940

More historic than 92% of U.S. towns · #34 of 362 in Wisconsin. What drives it

7 places in town are on the National Register, among them two historic districts with 37 buildings between them. Below: 2 old photos and papers, maps from 1885 on, and the census since 1860.

1837first post office
7on the National Register
24%homes built before 1940
2old photos & papers
9famous people
From Delavan’s archive · credits on each photo
Quick answers

How Delavan began

When was Delavan founded?

1837

The Delavan post office opened in 1837, the earliest record of the town by name. Another post office, Turtle Creek (1839), opened inside today’s city and later closed.

First census: 1,549 in 18602020 census: 8,505189 years

How historic is Delavan?

A

More historic than 92% of U.S. towns, on its age, its old homes and the National Register.

What drives the grade ↓
Founding year: the first Delavan post office (Blevins & Helbock, CC0).The full story ↓
History grade

What drives Delavan’s History grade

On its age, its old homes and the National Register, Delavan is more historic than 92% of U.S. towns, #34 of 362 in Wisconsin. All 3 inputs are above most U.S. towns; its National Register listings ranks highest and its age lowest.

A
HistoryA character grade: shown, never part of Delavan’s overall grade.
All U.S. towns we grade (21,289)Ahead of 92%
NewerOlder
Wisconsin towns of 2,500+ (362)Ahead of 91%

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 Delavan’s 47.2 sits above most of its state (88% of Wisconsin towns have fewer) while its 41 historic buildings outnumber those of 84% of U.S. towns.

How sure. Graded on any two of the three inputs instead, the letter would range from A− to A. The pre-1940 share is a Census survey estimate (±4.8 points). The founding year is the first post office, not a stated founding date.

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 Delavan’s past

Read from the archive, the National Register and the record. The page puts what stands out first.

★ What stands out · Help out

Start Delavan’s collection

The first neighbors to add old photos shape how Delavan’s history is told.

Decades since 1900 with photos
00s10s20s30s40s50s60s70s80s90s
1 of 10 decades. The empty ones are waiting for someone’s album.
On the map

Delavan on the map, 1893 to 1971

Every edition of the U.S. Geological Survey’s map of Delavan. Tap a year, or press play to watch the town change.

Delavan on the 1893 USGS mapDelavan on the 1960 USGS mapDelavan on the 1971 USGS map1893Delavan 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 Delavan.

Every building

Delavan, building by building, 1885–1910

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.

Delavan fire insurance map, 1885, sheet 11885Sheet 1 of 2
Edition
BrickWoodStone

Sanborn Map Company, via the Library of Congress. Editions published in 1930 or earlier, which are in the public domain.

The story

How Delavan came to be

From Wikipedia’s history of Delavan.

Read it all →

Delavan sits in the middle of what was once an inland sea. During the last ice age, the final glaciation, named the Michigan tongue, covered this region. The Michigan tongue descended along the area of Lake Michigan. The "Delavan lobe" of this glacier broke off, pushing southwest into the area of Walworth County.

Text from Wikipedia, licensed CC BY-SA 4.0.

From the old history books

What they wrote about Delavan, 1882–1912

Passages that mention Delavan, cut from the printed page as they were published.

The second charitable institution incorporated by the State was the " Wisconsin Institute for the Education of the Deaf and Dumb." It was originally a private school for deaf mutes, near, and subsequently in, the village of Delavan, Walworth county. By an act of the legislature approved April 19, 1…
History of Walworth County, Wisconsin, containing an account of its settlement, growth, development and resources...its war record, biographical sketches, portraits of prominent men and early settlers1882 · page 60Read the page →
Read the text

The second charitable institution incorporated by the State was the " Wisconsin Institute for the Education of the Deaf and Dumb." It was originally a private school for deaf mutes, near, and subsequently in, the village of Delavan, Walworth county. By an act of the legislature approved April 19, 1852, it was made the object and duty of the corporation to establish, continue and maintain this school for the education of the deaf and dumb, "at or near the village of Delavan, to qualify, as near as might be, that unfortunate class of persons for the enjoyment of the blessings of a free government, obtaining the means of subsistence, and the discharge of those duties, social and political, devolving upon American citizens." It has since been sup-

Text read by machine from the scan; it may contain errors.
embraced but a single section of the original town, viz.. Section 36, in Town 3, Range 16. By that act, the present town of Elkhorn was established. The boundaries were described as follows: "All that part of the county of Walworth comprised in Section 36, in the town of Elkhorn; Section 1, in the …
History of Walworth County, Wisconsin, containing an account of its settlement, growth, development and resources...its war record, biographical sketches, portraits of prominent men and early settlers1882 · page 472Read the page →
Read the text

embraced but a single section of the original town, viz.. Section 36, in Town 3, Range 16. By that act, the present town of Elkhorn was established. The boundaries were described as follows: "All that part of the county of Walworth comprised in Section 36, in the town of Elkhorn; Section 1, in the town of Delavan: Section 6, in the town of Geneva, and Section 31, in the town of La Fayette, is hereby set off and organized into a separate town by the name of Elkhorn," and except Section 36, the remaining part of Elkhorn was organized as a new town under the name of Sugar Creek. The town of Elkhorn, as organized by the act of Februaiy 2, 1846, is a square of two miles, embraces the geographical center of the county, and is the

Text read by machine from the scan; it may contain errors.
Township i north, range 16 east, was a part of the town of Delavan until February 28. 1839, when it was set off and named for the county. It then for four years included Sharon. Next southward are the towns of Alden and Chemung, in Illinois. The ground is generally high, much like that of Sharon. A…
History of Walworth county, Wisconsin ..1912 · page 437Read the page →
Read the text

Township i north, range 16 east, was a part of the town of Delavan until February 28. 1839, when it was set off and named for the county. It then for four years included Sharon. Next southward are the towns of Alden and Chemung, in Illinois. The ground is generally high, much like that of Sharon. At the observatory it is one thousand fifty feet above sealevel, and nearly as high for a considerable area about that institution. At the railway station, village of Walworth, the height is one thousand four feet. The lowest point is a short' and narrow area at the end of Geneva lake,

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

Delavan, 1837 to 1980

Woven from the archive, old maps, post office records, the National Register and the people born here.

  1. 19th century
  2. 1837Post officeThe Delavan post office opens
  3. 1839Post officeThe Turtle Creek post office opens
  4. 1840BuiltStowell, Israel, Temperance House is built
  5. 1840Post officeThe Turtle Creek post office closes
  6. 1848Born hereAlice E. Bartlett is born here
  7. 1876Born hereNed Hollister is born here
  8. 1884BuiltA. H. Allyn House is built
  9. 1884In the archiveDelavan, Walworth Co., Wisconsin 1884
  10. 1893On the mapFirst mapped by the U.S. Geological Survey
  11. 20th century
  12. 1912Born hereFrank B. James is born here
  13. 1913BuiltDelavan's Vitrified Brick Street is built
  14. 1914BuiltDelavan Post Office is built
  15. 1914Born hereKenneth Goff is born here
  16. 1980In the archiveGerman apple pancakes at Millie's Restaurant
By decade

Delavan, decade by decade

2 decades in the archive, from the 1880s to the 1980s. Scroll each row; tap a photo for its story.

1890s–1970snothing yet
Nothing in the archives for these yearsWeddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
Add from your album
1990snothing yet
Nothing in the archives for these yearsWeddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
Add from your album
Then & now

Stand where they stood

No then-and-now pairs yet. Take a photo from the same spot as an old one and they appear here side by side.

Delavan, Walworth Co., Wisconsin 1884
Retake this viewDelavan, Walworth Co., Wisconsin 1884, 1884

Find the spot, match the angle, and add your photo. It becomes the first then-and-now pair on Delavan’s page.

Retake this view · +15
On the National Register

7 listings protect 41 historic buildings

The country’s official list of buildings and places worth saving.

places listed
7
National Historic Landmarks
0
none yet
historic buildings protected
41
each building in a district counts
first listed
1978
Stowell, Israel, Temperance House
All 7 listings

National Park Service, National Register of Historic Places. Photos from Wikimedia Commons, credited on each place’s page.

People over time

Delavan, census by census

02,0004,0006,0008,0001900195020008,505

Grew from 1,549 people in 1860 to 8,505 in 2020, 5 times over.

17 censuses, 1860–2020.

U.S. Census Bureau decennial counts, from the census table on Delavan’s Wikipedia page.

Famous people

9 famous people were born in Delavan

Writers, athletes, leaders and more, ranked by how widely they’re known.

See all →
Places that used to be

Lost post offices, old corners and burying grounds

Delavan’s post office has been open since 1837. Another post office, Turtle Creek, opened and closed inside today’s town.

Delavan
1837–today
Turtle Creek
1839–1840
18301930today
Hamlets and corners on the map
Lake Lawn
3cemeteries and burying grounds inside Delavan
Old SettlersSaint AndrewsSpring Grove

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.

Questions about Delavan’s history

What year was Delavan founded?

The Delavan post office opened in 1837, the earliest record of the town by name (U.S. post office records).

How does Delavan rank for history?

Delavan is more historic than 92% of U.S. towns, #34 of 362 in Wisconsin. 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.

What is on the National Register in Delavan?

7 listings: 4 buildings, among them the Stowell, Israel, Temperance House (listed 1978, the first), 2 historic districts, the Delavan Downtown Commercial Historic District and the Delavan Water Tower Park Historic District, with 37 contributing buildings, and 1 structure. 41 historic buildings in all.

How old are the homes in Delavan?

24% of Delavan’s homes were built before 1940 (Census estimate, ±4.8 points), against a typical 12% for a Wisconsin town; the median home was built in 1968.

Memory lane

What the archives can’t tell you, neighbors can.

Town Square →
Start a conversation
Sources

Where this page comes from

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 Wikimedia Commons (12), the Library of Congress (1), Wikidata (5), the National Register of Historic Places (7), Wikipedia, 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.