Allendale is a village in Wabash Precinct, Wabash County, Illinois. The population was 475 at the 2010 census. History Allendale was founded in 1869, taking its name from Colonel C. M. Allen, a railroad official. 1989 tornado On January 7, 1989, an F4 tornado leveled a good portion of the town of Allendale and injured 55 of its residents. The tornado directly impacted Allendale's school, destroying the grade school portion, built in the 1960s. The high school portion, built in the late 1920s, withstood the storm with minimal damage, despite being condemned two years earlier due to lobbying by Mt. Carmel's District 348 in an attempt to usurp District 17. Relief funds paid to build a brand new school to be used by the elementary and middle school students of District 17. Current Allendale Today Allendale has about 500 residents with a First National Bank, a Cj's Fast Shop Gas Station and Convenience Store, a United States Post Office, a Fire Station, and a Ruritan Hall. Geography Allendale is located northeast of Patton and east-northeast of Adams Corner at (38.528524, -87.709811). According to the 2010 census, Allendale has a total area of , all land. Demographics As of the census of 2000, there were 528 people, 192 households, and 142 families residing in the village. The population density was . There were 205 housing units at an average density of . The racial makeup of the village was 97.92% White, 0.76% African American, 0.95% from other races, and 0.38% from two or more races. Hispanic or Latino of any race were 1.14% of the population. There were 192 households, out of which 35.4% had children under the age of 18 living with them, 60.9% were married couples living together, 10.4% had a female householder with no husband present, and 26.0% were non-families. 25.5% of all households were made up of individuals, and 12.0% had someone living alone who was 65 years of age or older. The average household size was 2.65 and the average family size was 3.20. In the village, the population was spread out, with 28.4% under the age of 18, 10.2% from 18 to 24, 25.8% from 25 to 44, 23.7% from 45 to 64, and 11.9% who were 65 years of age or older. The median age was 37 years. For every 100 females, there were 98.5 males. For every 100 females age 18 and over,