Origins

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.

The first humans known to inhabit the Delavan area were Native Americans around 1000 BCE. Later, between 500 and 1000 CE, Mound Builders lived in what is now the Delavan Lake area. Mound Builders were of the Woodland culture. The effigy mounds they erected along the shores of Delavan Lake numbered well over 200, according to an archeological survey done in the late 19th century by Beloit College. Many were along the north shore of the lake where Lake Lawn Resort now stands. The Potawotomi Indians settled around the lake in the late 18th century, although there were only an estimated 240 in the county. Some of their burial mounds are preserved in what is now Assembly Park.

From the mid-17th century through the mid-18th century, Delavan was part of "New France". It came under British rule in the Province of Quebec following the French and Indian War. In accordance with the Treaty of Paris (1783), it was turned over to the United States and became part of the newly established Northwest Territory.

American era

Illustration of the school for the deaf and surrounding area, published 1893

Between 1800 and 1836, the Delavan area was part of the Indiana Territory, followed by the Illinois Territory, finally becoming part of the Wisconsin Territory in 1836. Statehood was granted to Wisconsin in 1848.

Between 1847 and 1894, Delavan was home to 26 circus companies.^[3] The Mabie Brothers U.S. Olympic Circus, then the largest in America, arrived in 1847, to become the first circus to quarter in the territory of Wisconsin. Its famous rogue elephant, "Romeo", stood 10+1⁄2 feet (3.20 m) high, and 10,500 pounds (4,800 kg). The original P. T. Barnum Circus was organized here in 1871 by William C. Coup and Dan Costello. Over 130 members of Delavan's 19th century circus colony are buried in Spring Grove and St. Andrew cemeteries.

On July 21, 1948, Delavan was the site of Wisconsin's Circus Centennial as part of the state's celebration of 100 years of statehood.^[4] On May 2, 1966, Delavan was selected by the U.S. Post Office to issue on a first day cover basis, the five-cent American Circus commemorative postage stamp.

2010 census

Art students at the State School for the Deaf, Delavan

As of the census^[8] of 2010, there were 8,463 people, 3,189 households, and 2,079 families residing in the city. The population density was 1,251.9 inhabitants per square mile (483.4/km²). There were 3,500 housing units at an average density of 517.8 per square mile (199.9/km²). The racial makeup of the city was 81.2% White, 1.7% African American, 0.7% Native American, 1.0% Asian, 12.7% from other races, and 2.6% from two or more races. Hispanic or Latino people of any race were 29.4% of the population.

There were 3,189 households, of which 36.9% had children under the age of 18 living with them, 44.9% were married couples living together, 14.1% had a female householder with no husband present, 6.1% had a male householder with no wife present, and 34.8% were non-families. 28.4% of all households were made up of individuals, and 11.9% had someone living alone who was 65 years of age or older. The average household size was 2.63 and the average family size was 3.25.

The median age in the city was 33.5 years. 28.1% of residents were under the age of 18; 9% were between the ages of 18 and 24; 26.8% were from 25 to 44; 23.5% were from 45 to 64; and 12.7% were 65 years of age or older. The gender makeup of the city was 49.3% male and 50.7% female.

Citizens Bank of Delavan

• Built in 1904,^[11] The bank was originally founded on March 14, 1875, by Thomas Perry James and associates.^[12]