Pomona is the fifth largest city in Los Angeles County, California (after Los Angeles, Long Beach, Glendale, and Santa Clarita). Pomona is located in between the Inland Empire and the San Gabriel Valley. As of the 2000 census, the city population was 149,473. In 2005, its population was estimated as 160,815. The city is the site of the Fairplex, which hosts the L.A. County Fair and the NHRA Auto Club Raceway at Pomona, (formerly known as Pomona Raceway) Powerade Winternationals Drag Racing competition. Since the 1980s, Pomona's newest neighborhood Phillips Ranch, experienced rapid growth with homes still being built in the hilly area between Downtown and Diamond Bar. Today, Phillips Ranch is nearly all residential. Northern Pomona has seen some gentrification with additional housing units added and revamped streetscapes.