concentration of Mediterranean revival and Mission revival houses. It was developed from 1920 to 1935 and became a city historic district in November 1993. West Northwood Historic District: Cashing in on the real estate boom, developers of West Northwood built speculative and custom houses for upper-middle-class professionals from 1925 to '27. Dominant architectural styles are Mediterranean revival and mission. Although the area was declining, that has reversed in recent years, as more investors buy and restore the houses. West Northwood became a city historic district in August 1993. West Palm Beach Census Designated Places and Urbanized Area The estimated 2012 population of West Palm Beach and the immediately adjacent Census Designated Places is 134,795. Much of this urbanized area lies directly west of the city and includes the neighborhoods of Westgate, Belvedere Homes, Lakeside Green, Century Village, Schall Circle, Lake Belvedere Estates, Plantation Mobile Homes, and Golden Lakes. These neighborhoods are not technically within the boundaries of West Palm Beach, being located in unincorporated Palm Beach County. However, residents possess a "West Palm Beach" address and urban services, such as police, fire, parks, water and sewer, are provided by a combination of Palm Beach County and the City of West Palm Beach in these areas. The City of West Palm Beach also provides water and sewer service to the Town of Palm Beach. The contiguous "urbanized" area, of which West Palm Beach is the core city, includes most of eastern Palm Beach County and has an estimated 2008 population of around 1,250,000. Key incorporated cities and their populations within the West Palm Beach urbanized area include: 89,407 – Boca Raton 71,097 – Boynton Beach 64,072 – Delray Beach 60,202 – Wellington 58,298 – Jupiter 50,699 – Palm Beach Gardens 38,696 – Greenacres 36,306 – Royal Palm Beach 36,000 – Lake Worth Beach 33,263 – Riviera Beach 20,872 – Palm Springs 12,348 – North Palm Beach 10,867 – Lantana 8,649 – Palm Beach 3,472 – Lake Clarke Shores 3,283 – Loxahatchee 2,057 – Atlantis 1,940 – Haverhill 1,939 – Mangonia Park Notable buildings Climate West Palm Beach has a tropical rainforest climate (Köppen Af) with mean temperatures in all months above . The city is situated in USDA hardiness zone 10b, with an annual mean minimum temperature of . The wet season—May through October—is hot, humid, and wet. The average window for temperatures is April 15 through October 10, but temperatures