A post office was established at Grabill in 1902. Grabill had its start as a town when the Wabash Railroad was extended to that point. Grabill was named for its first postmaster, Joseph A. Grabill.
Geography
Grabill is located at . According to the 2010 census, Grabill has a total area of, all land.
Demographics
2010 census
At the 2010 census there were 1,053 people, 403 households, and 276 families living in the town. The population density was. There were 443 housing units at an average density of. The racial makup of the town was 96.8% White, 0.6% African American, 0.7% Native American, 0.5% Asian, 0.3% from other races, and 1.2% from two or more races. Hispanic or Latino of any race were 1.6%. Of the 403 households 37.7% had children under the age of 18 living with them, 52.4% were married couplesliving together, 13.9% had a female householder with no husband present, 2.2% had a male householder with no wife present, and 31.5% were non-families. 27.5% of households were one person and 9.9% were one person aged 65 or older. The average household size was 2.61 and the average family size was 3.22. The median age in the town was 32.8 years. 30.9% of residents were under the age of 18; 7.2% were between the ages of 18 and 24; 28.9% were from 25 to 44; 21.7% were from 45 to 64; and 11.3% were 65 or older. The gender makeup of the town was 48.1% male and 51.9% female.
At the 2000 census there were 1,113 people, 420 households, and 307 families living in the town. The population density was 1,805.1 people per square mile. There were 442 housing units at an average density of 716.9 per square mile. The racial makup of the town was 98.65% White, 0.18% Native American, 0.27% Asian, 0.09% from other races, and 0.81% from two or more races. Hispanic or Latino of any race were 0.99%. Of the 420 households 45.0% had children under the age of 18 living with them, 57.6% were married couples living together, 12.1% had a female householder with no husband present, and 26.9% were non-families. 24.5% of households were one person and 8.8% were one person aged 65 or older. The average household size was 2.65 and the average family size was 3.19. The age distribution was 32.3% under the age of 18, 7.7% from 18 to 24, 33.8% from 25 to 44, 17.3% from 45 to 64, and 9.0% 65 or older. The median age was 31 years. For every 100 females, there were 92.6 males. For every 100 females age 18 and over, there were 84.8 males. The median household income was $42,240 and the median family income was $48,500. Males had a median income of $36,293 versus $24,688 for females. The per capita income for the town was $17,252. About 5.5% of families and 8.2% of the population were below the poverty line, including 12.4% of those under age 18 and 3.2% of those age 65 or over.
