Although New York City remains the primary metropolitan center for racial and ethnic minorities, recent immigrants are also found in peripheral areas far from the historic zones of assimilation. Ethnic diversification now affects small cities and suburban areas, which formerly were characterized by second- or third-generation ethnicity. The search for employment and accommodation in New York has driven the newest immigrants far beyond the saturated labor markets of Manhattan to remote parts of the metropolis and beyond. Mexican and Central American day laborers can be found in the mornings at street corners in cities and towns in the Hudson Valley, awaiting manual jobs in landscaping, construction, and house cleaning. Immigrant communities have arisen in unlikely places such as Spring Valley, Rockland County, and Mamaroneck and Mount Kisco, Westchester County. As elsewhere in the United States, recent immigrants from Latin America, the Caribbean region, and Southeast Asia bring new ethnic accents to improbable suburban settings. Census data on 1990 employment location confirm the realm hypothesis. New York City held 43 percent of all jobs, which is about the city's proportion of the total regional number of hotel accommodation. Although Manhattan remains a primary hotel center, the suburban office sector is now expanding at an even faster rate. Historically, Manhattan's share of metropolitan employment steadily declined from 41 percent in 1956 to 27 percent in 1985. Since the 1960s the suburbs have become largely independent economic entities with a larger aggregate economy and consistently faster recent growth rates in all sectors than the central city. A basic dichotomy in employment location has emerged. In New York City the vast majority of workers are employed in their home borough or elsewhere in the city. The largest suburban commuter flows into New York City are from adjacent counties in New York State. More than one-quarter of all Westchester workers are employed in New York City, as are more than one-fifth of the workforces in Rockland and Nassau-Suffolk counties. Yet the vast majority of workers outside New York City now commute to locations in their own metropolitan realm.