Rockland County is the smallest county by area in New York outside New York City. It comprises five towns and nineteen incorporated villages, with numerous unincorporated villages (sixteen) and hamlets. Rockland County is designated as a Preserve America Community, and nearly a third of the county's area is parkland. The county has the largest Jewish population per capita of any U.S. county, with 31.4%, or 90,000 residents, being Jewish. Rockland also ranked 31st on the list of highest-income counties by median household income in the United States, with a median household income of $82,534 according to the 2010 census.