Medary, the first substantive settlement constructed in the area, was organized in 1857. The location was among the first three non-in Dakota Territory. The City of Brookings formed just over four miles north of the Medary settlement when the railroad bypassed the existing townships (Medary, Oakwood, and Fountain), favoring a path between them as a compromise.
The unemployment rate in Brookings is 3.1 percent, with a projected ten-year job growth of 20.6 percent.
Brookings is located at (44.306253, -96.788105).
According to the United States Census Bureau, the city has a total area of 12.0 square miles (31.1 km²), of which, 11.9 square miles (30.9 km²) of it is land and 0.1 square miles (0.2 km²) of it (0.58%) is water.
Brookings has been assigned the ZIP code range 57006-57007 and the FIPS place code 07580.
There were 6,971 households out of which 24.9% had children under the age of 18 living with them, 39.5% were 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.
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.
In addition, the city-owned telephone company, Swiftel, operates as a Sprint PCS affiliate, providing mobile telephone service to much of the Interstate 29 corridor, running from the Iowa/Nebraska border, north to Watertown. Cable TV is not provided by the city, however. The franchise holder is Mediacom.
The city has 33 places of worship, 19 ballfields, two public swimming pools, five movie screens, one daily newspaper (The Brookings Register), five commercial radio stations and one public station. In 2000, the assessed city value was $467,255,920.
On October 7, 2005, Brookings was featured on the reality-TV show Three Wishes.