|Area||1.00 sq mi (3 km2)|
|- land||1.00 sq mi (3 km2)|
|- water||0.00 sq mi (0 km2)|
|Density||991.0 / sq mi (383 / km2)|
|- summer (DST)||CDT (UTC-5)|
|Area code||815 & 779|
Wyanet's history dating back to 1821, was officially plated in 1854 and incorporated in 1857. The community has had several names since its beginning. In 1821 the settlement was first called "Center". Named by Bulbona an Indian trader. In 1837 the Village officially started to sprout its roots due to the area known as "Pond Creek". Named for the Creek at the South edge of town where Ellis Mercer built a saw mill and Amos Leonard built the first flour mill. The first railroad, the Chicago Rock Island & Pacific was built here in 1853. At this time the name was changed to "Kingston" in honor of the land donors Henry and Mary King. The Chicago, Burlington, Quincy Railroad gave the Village its current name, Wyanet, when they completed their rail line in 1855.
Wyanet is located at (41.361417, -89.582802).
According to the 2010 census, the village has a total area of 1.00 square mile (2.6 km2), all land.
As of the census of 2000, there were 1,028 people, 406 households, and 287 families residing in the village. The population density was 1,028.0 people per square mile (396.9/km²). There were 431 housing units at an average density of 431.0 per square mile (166.4/km²). The racial makeup of the village was 99.22% White, 0.29% Native American, 0.29% Asian, and 0.19% from two or more races. Hispanic or Latino of any race were 0.49% of the population.
There were 406 households out of which 36.2% had children under the age of 18 living with them, 55.2% were married couples living together, 10.3% had a female householder with no husband present, and 29.3% were non-families. 25.6% of all households were made up of individuals and 11.1% had someone living alone who was 65 years of age or older. The average household size was 2.53 and the average family size was 3.01.
In the village the population was spread out with 28.1% under the age of 18, 9.0% from 18 to 24, 29.6% from 25 to 44, 20.9% from 45 to 64, and 12.4% who were 65 years of age or older. The median age was 34 years. For every 100 females there were 94.7 males. For every 100 females age 18 and over, there were 89.0 males.
The median income for a household in the village was $38,289, and the median income for a family was $43,594. Males had a median income of $31,958 versus $20,625 for females. The per capita income for the village was $16,888. About 5.2% of families and 6.4% of the population were below the poverty line, including 8.7% of those under age 18 and 6.5% of those age 65 or over.
- Darwin Teilhet (1904-1964), mystery novelist and screenwriter; born in Wyanet
- Patrick "Pappy" McMahon, rescued by John F. Kennedy after the sinking of PT-109; born, raised and died in Wyanet
- "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23.
- "2010 Census U.S. Gazetteer Files for Places – Illinois". United States Census. Retrieved 2012-10-13.
- "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.