'New Castle County' definitions:
New Castle -- U.S. County in Delaware
From: Gazetteer 2000
Name :
New Castle -- U.S. County in Delaware
Population (2000) :
500265
Housing Units (2000) :
199521
Land area (2000) :
426.265807 sq. miles (1104.023324 sq. km)
Water area (2000) :
67.241571 sq. miles (174.154862 sq. km)
Total area (2000) :
493.507378 sq. miles (1278.178186 sq. km)
Located within :
Delaware (DE), FIPS 10
Location :
39.695612 N, 75.611707 W