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is an unincorporated census-designated place in Los Angeles County, California, United States. As of the 2000 census, the community had a total population of 53,122.
In 2003, voters were asked to decide whether the community should incorporate and become a city. Proponents argued that a new city would be able to better control development and provide increased police and fire service, while opponents argued that the new city would increase taxes and redevelop residential neighborhoods for revenue-generating businesses. Most of the prime commercial land had already been annexed by the City of Industry to escape taxes levied by the County on unincorporated areas. Ultimately the measure failed by about a 2-1 margin.
Hacienda Heights is located at (34.000578, -117.969434) in east San Gabriel Valley bordering La Puente and West Covina to the North, Whittier to the West, La Habra Heights to the South, and Rowland Heights to the East along the Pomona Freeway (Route 60). Hacienda Heights is a predominately residential neighborhood.
According to the United States Census Bureau, the community has a total area of 29.5 km² (11.4 mi²). 29.5 km² (11.4 mi²) of it is land and 0.09% is water.