Colusa County, California

Colusa County is located in the northern Sacramento Valley, where Interstate 5 and the Sacramento River provide important geographic and transportation connections. Colusa serves as the county seat and has a small-town population of fewer than 6,000 residents.

Outdoor recreation is a major attraction, particularly at Colusa National Wildlife Refuge. The refuge provides excellent opportunities for birdwatching and attracts hunters during the annual waterfowl season.

The northwestern part of the county reaches into the Mendocino National Forest, offering hiking, camping, and scenic mountain landscapes. With its agricultural valley floor, wildlife habitat, and nearby forests, Colusa County combines rural living with plenty of outdoor opportunities.

CategoryDetails
County NameColusa County
County SeatColusa
EtymologyNamed after the Colusa people, a Native American tribe
Cities, Towns, and CommunitiesColusa, Maxwell, Williams, Grimes, Arbuckle, Stonyford
Interstates and HighwaysInterstate 5, State Route 20, State Route 45
FIPS Code06-011
Total Area (Land and Water)1,158 square miles (Land: 1,151 sq mi, Water: 7 sq mi)
Adjacent Counties (and Direction)Glenn County (North), Butte County (Northeast), Sutter County (East), Yolo County (South), Lake County (West)
Time ZonePacific Standard Time (PST)
StateCalifornia
PopulationApproximately 23,000
Coordinates39.2074° N, 122.2087° W
Major LandmarksColusa National Wildlife Refuge, Sacramento River, Colusa Historical Museum

PHYSICAL MAP

Colusa County Topographic Map

This topographic map highlights Colusa County’s transition from the flat Sacramento Valley to the rugged Coast Range. The detailed contours reveal how the terrain gradually rises toward the western portion of the county.

SATELLITE IMAGERY

Colusa County Satellite Map

This satellite map shows the strong agricultural character of Colusa County, with geometric farm fields covering much of the valley floor. The Sacramento River curves through the eastern portion, while hills and higher terrain rise toward the west.

OUTLINE MAP

Colusa County Blank Map

This blank map outlines Colusa County’s rectangular shape in the Sacramento Valley. The western boundary extends along the Coast Range, while the eastern edge follows the Sacramento River, emphasizing the county’s transition from farmland to foothills.

California County Map

Printable California county map showing county boundaries and locations

Ever wonder how California’s 58 counties are organized? Our California county map lays them all out, from the Pacific Coast to the vast desert regions. Explore the map to find the counties you know—and perhaps discover a few you don’t.

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