Colusa County

US States / A-G / California / Colusa County

Colusa County is named for the Mexican land grants of Coluses in 1844 and Colus in 1845.


Created:  February 18, 1850

County Seat: 

Monroeville  1850 – 1851

Colusa          1850 – present


County Courthouse – Colusa  


Location:  547 Market Street / 6th Street

Built:  1860 – 1861

Style:  Classical Revival

Architect:  Vincent Brown of Marysville

Contractor:  Vincent Brown of Marysville


Description:  The building faces north and is a two story structure. The north front has a high portico with four columns rising to a pediment. Along the sides of the building are vertical pilasters between the windows. A wide eave follows the roof line. On the center of the roof is an octagonal open cupola with bell. The building was enlarged in 1886 extending the structure south to connect with the Hall of Records. The Hall of Records was constructed in 1914. The architect was Henry C Smith. The building was renovated in 2002. The architect was HMR Architects, Inc. and the contractor was Refnes Construction Company, Inc. The building was restored in 2005. The architect was HMR Architects, Inc. and the contractor was Hudspeth Construction.


Note:  The courthouse is the oldest remaining courthouse in the Sacrament Valley. The courthouse is the third oldest courthouse in California after the oldest courthouse in Mariposa County and the second oldest courthouse in Trinity County.


County Courthouse Annex – Colusa  




Location:  532 Oak Street / 6th Street

Built:  1992 – 1993

Style:  Modern

Architect:  Gene McFarren

Contractor:  Turner Construction.


Description:  The building faces south and is a two story white colored concrete structure. The building faces south and was completed in 1993. The south front has a central entrance and two large windows on the first story and three large windows on the second story. The roof is hipped. The building houses the courts.



N – Glenn County

E – Butte County and Sutter County

S – Yolo County

W – Lake County






































Photos taken 2013