'Rockland County, NY' definitions:

Rockland -- U.S. County in New York

From: Gazetteer 2000
Name :
Rockland -- U.S. County in New York
Population (2000) :
286753
Housing Units (2000) :
94973
Land area (2000) :
174.218537 sq. miles (451.223919 sq. km)
Water area (2000) :
25.122648 sq. miles (65.067358 sq. km)
Total area (2000) :
199.341185 sq. miles (516.291277 sq. km)
Located within :
New York (NY), FIPS 36
Location :
41.124995 N, 74.014963 W