Brookfield is a city that borders the western side of the City of Milwaukee, Wisconsin and is located in Waukesha County, Wisconsin. It had a population of 38,649 at the 2000 census and 39,607 at the 2006 census. Brookfield is the second largest city in Waukesha County, and the leading commercial suburb of Milwaukee. The City of Brookfield was formed in 1954 from the Town of Brookfield, a portion of which still survives along the city's western edge. Brookfield shares the Elmbrook School District with the Town of Brookfield, with Village of Elm Grove and with a small section of City of New Berlin. A very small section of the city is served by the Waukesha School District.

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