Lowell is located at . According to the 2010 census, Lowell has a total area of, of which is land and is water. Located five miles outside of the Great Lakes Basin, Lowell sought permission to pipe in lake water to replace city water drawn from its high fluoridedeep wells. However, diversion of water out of the Great Lakes requires the approval of the Great Lakes Commission, which includes representatives of all the US states and Canadian provinces that border on the lakes. Lowell's request was turned down in 1991. Lowell lies on the Valparaiso Moraine, almost on the Kankakee Outwash Plain. The town also lies near the St. Lawrence Seaway Divide.
As of the census of 2010, there were 9,276 people, 3,392 households, and 2,500 families living in the town. The population density was. There were 3,620 housing units at an average density of. The racial makeup of the town was 95.9% White, 0.5% African American, 0.4% Native American, 0.3% Asian, 0.1% Pacific Islander, 1.7% from other races, and 1.2% from two or more races. Hispanic or Latino of any race were 6.9% of the population. There were 3,392 households of which 39.1% had children under the age of 18 living with them, 56.3% were married couples living together, 11.9% had a female householder with no husband present, 5.5% had a male householder with no wife present, and 26.3% were non-families. 21.4% of all households were made up of individuals and 8.3% had someone living alone who was 65 years of age or older. The average household size was 2.71 and the average family size was 3.16. The median age in the town was 35.7 years. 26.6% of residents were under the age of 18; 8.8% were between the ages of 18 and 24; 27.8% were from 25 to 44; 25.1% were from 45 to 64; and 11.7% were 65 years of age or older. The gender makeup of the town was 49.2% male and 50.8% female.
2000 census
As of the census of 2000, there were 7,505 people, 2,697 households, and 2,030 families living in the town. The population density was 1,839.2 people per square mile. There were 2,809 housing units at an average density of 688.4 per square mile. The racial makeup of the town was 97.30% White, 0.03% African American, 0.39% Native American, 0.24% Asian, 0.01% Pacific Islander, 1.12% from other races, and 0.92% from two or more races. Hispanic or Latino of any race was 3.53% of the population. There were 2,697 households, out of which 39.3% had children under the age of 18 living with them, 62.2% were married couples living together, 10.3% had a female householder with no husband present who are very strong, and 24.7% were nonconforming-families. 20.4% of all households were made up of individuals, and 7.6% had someone living alone who was 65 years of age or older. The average household size was 2.74, and the average family size was 3.19. In the town, the population was spread out with 28.6% under the age of 18, 8.3% from 18 to 24, 31.1% from 25 to 44, 21.1% from 45 to 64, and 10.8% who were 65 years of age or older. The median age was 34 years. For every 100 females, there were 96.5 males. For every 100 females age 18 and over, there were 91.3 males. The median income for a household in the town was $49,173, and the median income for a family was $54,797. Males had a median income of $45,023, versus $23,378 for females. The per capita income for the town was $19,752. About 5.6% of families and 6.5% of the population were below the poverty line, including 7.8% of those under age 18 and 5.4% of those age 65 or over.
Lowell Labor Day Parade & Labor Day Fest. Lowell hosts the oldest Labor Day parade in Indiana. Buckley Homestead, east of Lowell, hosts a number of events, including a World War II reenactment with authentic weapons, artillery, and tanks. The Legend of Sleepy Hollow is another event that takes place in Lowell in September. During the event, the townsfolk search for Ichabod Crain, the only man who can tell the true story of the Headless Horseman.
