Brookings, South Dakota

===2000 census===
As of the [[census]] of 2000, there were 18,504 people, 6,971 households, and 3,422 families living in the city. The population density was {{convert|1,549.7|PD/sqmi|PD/km2|sp=us|adj=off}}. There were 7,359 housing units at an average density of {{convert|616.3|/sqmi|/km2|sp=us|adj=off}}. The racial makeup of the city was 95.49% [[White (U.S. Census)|White]], 0.44% [[African American (U.S. Census)|African American]], 0.99% [[Native American (U.S. Census)|Native American]], 1.88% [[Asian (U.S. Census)|Asian]], 0.05% [[Pacific Islander (U.S. Census)|Pacific Islander]], 0.26% from [[Race (United States Census)|other races]], and 0.88% from two or more races. [[Hispanic (U.S. Census)|Hispanic]] or [[Latino (U.S. Census)|Latino]] of any race were 0.75% of the population.

There were 6,971 households, out of which 24.9% had children under the age of 18 living with them, 39.5% were [[Marriage|married couples]] living together, 7.3% had a female householder with no husband present, and 50.9% were non-families. 34.4% of all households were made up of individuals, and 9.0% had someone living alone who was 65 years of age or older. The average household size was 2.26 and the average family size was 2.93.

In the city, the population was spread out, with 17.4% under the age of 18, 36.6% from 18 to 24, 22.0% from 25 to 44, 14.0% from 45 to 64, and 9.9% who were 65 years of age or older. The median age was 24 years. For every 100 females, there were 99.7 males. For every 100 females age 18 and over, there were 98.6 males.

As of 2000 the median income for a household in the city was $31,266, and the median income for a family was $49,246. Males had a median income of $31,276 versus $22,763 for females. The [[per capita income]] for the city was $17,028. About 7.3% of families and 18.5% of the population were below the [[poverty line]], including 12.7% of those under age 18 and 6.6% of those age 65 or over.