Bartlett is a village located in Cook, DuPage and Kane counties, Illinois. A small parcel on the western border is in Kane County. The population was 41,208 at the 2010 census.
According to the 2010 census, Bartlett has a total area of 15.866 square miles (41.09 km), of which 15.63 square miles (40.48 km) (or 98.51%) is land and 0.236 square miles (0.61 km) (or 1.49%) is water.
As of the census of 2010, there were 41,208 people, 12,179 households, and 9,986 families residing in the village. The population density was 2,646 people per square mile (956.9/km²). There were 12,356 housing units at an average density of 834.1 per square mile (322.1/km²). The racial makeup of the village was 78.62% White, 2.34% African American, 0.24% Native American, 14.36% Asian, 0.03% Pacific Islander, 2.47% from other races, and 1.94% from two or more races. Hispanic or Latino of any race were 8.63% of the population.
According to a 2010 estimate, the median income for a household in the village was $86,629, and the median income for a family was $93,547. Males had a median income of $60,182 versus $36,494 for females. The per capita income for the village was $29,652. About 1.2% of families and 1.9% of the population were below the poverty line, including 1.5% of those under age 18 and 4.5% of those age 65 or over.
In 2011 Bartlett had 5,918 Asian residents, more than twice the number as in 2001. Ashok Selvam of the Daily Herald of Arlington Heights, Illinois said that the Asian population growth “could be traced to construction of the BAPS Shri Swaminarayan Mandir”.