Rosemead is a city in Los Angeles County, California, United States. As of the 2010 census, it had a population of 53,764. Rosemead is part of a cluster of cities, along with Arcadia, Temple City, Monterey Park, San Marino, and San Gabriel, in the west San Gabriel Valley with a growing Asian population.
Prior to the arrival of the Spanish, the area around Rosemead was populated by Native Americans of the Tongva, or as the Spaniards renamed them, the Gabrielinos. In 1771, the Spanish founded the first San Gabriel mission in the area that is now known as Whittier Narrows on the border between Montebello and Rosemead. In 1775, the mission moved to avoid the spring floods that ruined the first crops, to its present location in San Gabriel.
During the Spanish Colonial era, the area that is now the City of Rosemead, was part of the land administered by the San Gabriel Mission. As part of the Mexican government's Secularization Act of 1833, the land, formerly held by the Mission, was generously distributed to private citizens, requiring only that they build a house and graze cattle, brought to an end the Mission Era  Following the Mexican-American War and the 1848 signing of the Treaty of Guadalupe which transferred sovereignty over the territory now known as the State of California to the United States, Anglo-American immigration began to flow to the area. The southern part of Rosemead was part of Rancho Potrero Grande (Large Pasture) which was originally granted to a Native American man named Manuel Antonio, who was a "mayordomo" (overseer) at the San Gabriel Mission. The ranch was later transferred to Juan Matias Sánchez.
In 1852, John and Harriet Guess moved cross-country in an ox drawn wagon, to the San Gabriel Valley from Conway County, Arkansas. In 1855, the couple camped where present-day Savannah Elementary School is located on Rio Hondo Avenue. They rented the land until 1867, when John Guess purchased of a ranch and named it Savannah. The land stretched from Valley Boulevard to Marshall Street, and from Rosemead Boulevard to the Eaton Wash.
Other pioneers, Frank Forst and Leonard J. Rose, also settled in this valley. Rose and his wife Amanda bought about of land between what is now Rosemead Boulevard and Walnut Grove Avenue. Rose bred and trained horses for a living. He named his ranch "Rose's Meadow" which was eventually shortened to Rosemeade and gave the city its name. Rosemeade was once again shortened to Rosemead. The peaceful, pastoral community flourished with small truck farms and rabbit and chicken farms. Settlers moved in and also raised vegetables, fruits, grain and feed for the animals. It wasn't until August 4, 1959, the citizens elected to incorporate Rosemead into a city.
Rosemead Airport is one of the vanished former airports which once were spread all throughout the Los Angeles metropolitan area. Western Air College operated the airport. The airport at this location in Rosemead was apparently built at some point between 1940–42, as it was not depicted on a 1940 LA street map. The earliest depiction of this airport was on a 1942 street map, which labeled the field as the Western Air College Airport. At some point between 1942-44 the airport was renamed Rosemead, as that is how it was labeled on the 1944 LA Sectional Aeronautical Chart (courtesy of John Voss). A flying school was also operated at Rosemead Airport.
Fletcher Aviation sold to AJ Industries in the 1960s, AJ immediately sold the portion of the land from Rio Hondo Avenue almost to Rosemead Boulevard to AeroJet Corporation and they built a large facility there. It was named Flair Park and the roadway that parallels I-10 was named Flair Drive.
Demographics in Rosemead changed significantly in the 1990s. Chinese and Vietnamese immigrants in large numbers started moving in and opening businesses: ethnic restaurants and stores. The Whittier Daily News stated "The atmosphere certainly became more urban, in a Hong Kong way."  The small town ambience changed dramatically. The formerly conservative government changed when young John Tran was elected to the city council. The more seasoned portion of the city council supported keeping a safe and secure quality in the small town while rejecting some of Tran's more radical ideas such as a five story city hall, high density development and ushering out the Sheriff's Department and establishing a Rosemead Police Department, a move that would have cost the city millions of dollars, especially during the recession that followed during that period. Tran also supported a ballot initiative to change to a Charter city, (like Bell, CA.), which the voters soundly rejected. Tran lost in the next city election by one vote.