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Central Cores Continue to Lose People

Even as some of these regions population over all, their central cores to lose people. In New York, for example, census Bureau, demographers estimate that although the metropolitan area gained nearly 389,000 people from 1990 through 1996, more than 9000,000 migrated out from the core area of New York’ 5 five boroughs, plus Westchester, Rockland and Putnam Counties.

In California, more than 1.2 million people left Los Angeles County from 1990 through 1996. But because of immigration and high births, the Los Angeles area gained 963,626 people, making it the biggest gainer in population of the country’s metropolitan areas.

According to the Census Bureau, Las Vegas has been the fastest growing metropolitan region in 1990’s, increasing by 40.9 percent. Roughly 80 percent of the growth in the Las Vegas area comes from movement of people already in the country. Many of those people come from Southern California.

中心持续的人口流失

即使在这些地区的人口，其中心还是有人口流失。例如在纽约人口普查局，人口学家估计，虽然纽约中心地区从1990年至1996年取得近38.90万人，但是超过9000,000迁移出纽约中心地区以及附近的5个区，算上威彻斯特，罗克兰和普特南县。

在加利福尼亚州，120多万人离开了洛杉矶从1990年至1996年。但是，由于移民和高出生率，洛杉矶地区还是增加的963626人，成为在全国城市地区的人口的最大赢家。

据美国人口普查局，拉斯维加斯一直是增长最快的大都市地区在1990年，人口增加百分之40.9。大约80%的增长是来自在拉斯维加斯地区的人口流动。许多人来自南加州。