Warren is located at , along the Salamonie River. The town lies just southeast of Interstate 69 between exits 273 and 278. According to the 2010 census, Warren has a total area of, of which is land and is water.
Demographics
2010 census
As of the census of 2010, there were 1,239 people, 515 households, and 341 families living in the town. The population density was. There were 600 housing units at an average density of. The racial makeup of the town was 98.8% White, 0.1% African American, 0.1% Native American, 0.2% Asian, 0.1% from other races, and 0.8% from two or more races. Hispanic or Latino of any race were 0.4% of the population. There were 515 households of which 29.5% had children under the age of 18 living with them, 52.2% were married couplesliving together, 11.3% had a female householder with no husband present, 2.7% had a male householder with no wife present, and 33.8% were non-families. 29.5% of all households were made up of individuals and 11.6% had someone living alone who was 65 years of age or older. The average household size was 2.41 and the average family size was 2.96. The median age in the town was 40.1 years. 24.9% of residents were under the age of 18; 8.2% were between the ages of 18 and 24; 22.6% were from 25 to 44; 25.5% were from 45 to 64; and 19% were 65 years of age or older. The gender makeup of the town was 49.4% male and 50.6% female.
2000 census
As of the census of 2000, there were 1,272 people, 507 households, and 354 families living in the town. The population density was 1,395.1 people per square mile. There were 558 housing units at an average density of 612.0 per square mile. The racial makeup of the town was 98.82% White, 0.31% African American, 0.16% Native American, 0.08% Asian, 0.39% from other races, and 0.24% from two or more races. Hispanic or Latino of any race were 0.79% of the population. There were 507 households out of which 36.3% had children under the age of 18 living with them, 58.6% were married couples living together, 7.9% had a female householder with no husband present, and 30.0% were non-families. 25.8% of all households were made up of individuals and 11.4% had someone living alone who was 65 years of age or older. The average household size was 2.51 and the average family size was 3.03. In the town, the population was spread out with 28.4% under the age of 18, 6.4% from 18 to 24, 28.6% from 25 to 44, 21.7% from 45 to 64, and 14.9% who were 65 years of age or older. The median age was 37 years. For every 100 females, there were 92.4 males. For every 100 females age 18 and over, there were 90.2 males. The median income for a household in the town was $38,550, and the median income for a family was $41,917. Males had a median income of $33,229 versus $21,821 for females. The per capita income for the town was $17,145. About 2.0% of families and 3.1% of the population were below the poverty line, including 2.3% of those under age 18 and 8.1% of those age 65 or over.
Warren, originally known as "Jonesboro," was platted in 1833 near the Indianapolis & Ft. Wayne Road. In 1837, founder Samuel Jones sold his first lot. The name was later changed due to there being another town of Jonesboro nearby, south of Marion. The town experienced growth in 1878 when a new railroad line was built through the neighborhood.
Notable people
Phyllis Pond, American educator and politician was born in Warren.
John C. Rule, American educator and historian was born in Warren.
