Baldwin Park is a city located in the central San Gabriel Valley region of Los Angeles County, California, United States. As of the 2020 census, the population was 72,176, down from 75,390 at the 2010 census.
Baldwin Park began as part of cattle grazing land belonging to the San Gabriel Mission. It eventually became part of the Rancho Azusa de Dalton and the Rancho La Puente properties. The community became known as Vineland in 1860. By 1906, it changed to Baldwin Park. It was named after Elias J. "Lucky" Baldwin. In 1956, Baldwin Park became the 47th incorporated city in the State of California.
Baldwin Park is home to the first In-N-Out burger stand, opened on October 22, 1948. It was the first drive-thru in California and was replaced in November 2004 with a new building. The new In-N-Out University and company store opened in 2006 on Francisquito Avenue. Also, the company's first meatpacking plant is located down the street from the locations at the company