'Yolo County, CA' definitions:

Yolo -- U.S. County in California

From: Gazetteer 2000
Name :
Yolo -- U.S. County in California
Population (2000) :
168660
Housing Units (2000) :
61587
Land area (2000) :
1013.267533 sq. miles (2624.350750 sq. km)
Water area (2000) :
9.621718 sq. miles (24.920133 sq. km)
Total area (2000) :
1022.889251 sq. miles (2649.270883 sq. km)
Located within :
California (CA), FIPS 06
Location :
38.634155 N, 121.775709 W