Castro County is named for Henri Castro, who was the French consul general of the Republic of Texas and the founder of a colony in Texas.
Surrounding County Courthouses:
N – Deaf Smith County and Randall County
E – Swisher County
S – Hale County and Lamb County
W – Parmer County
Created: August 21, 1876 
County Seat:
Dimmitt 1891 – present
County Courthouse – Dimmitt
Location: 100 East Bedford Street / 2nd Street SE
Built: 1939 – 1940
Style: Art Deco / Moderne
Architect: Townes & Funk of Amarillo
Contractor: W W Hill Construction Company
Description: The building faces north and is a three story white colored sandstone and concrete structure. The building is located on landscaped grounds in the center of Dimmit. The center section is higher than the east and west wings. The entrance is recessed with a high square arch. The windows are narrow and vertical and the roof line is flat. In the interior, the main courtroom is located in the center of the second story. The Commissioners Court is located at the southeast side of the first story. The building houses the State District Court, Constitutional County Court and County Justice Court. The construction was a Works Progress Administration project. An addition was constructed in 1971. The architect was Laverne H Kirby and the contractor was H R Bundock, Inc.
See: The architect, William C Townes of Amarillo also designed the courthouses in Briscoe County, Childress County, Hansford County, Hutchinson County, Parmer County, Potter County and Ward County, and in New Mexico in Colfax County and Quay County.
History: The county was created in 1876 and Dimmitt was selected as the county seat in 1891 when the county was organized. The first court met in the office of J N Morrison. The first courthouse was a two story brick structure built in 1892 and which burned in 1906. The second courthouse was also a two story brick structure built by D P Kaufman in 1906. The building was demolished in 1939 to make way for the third and present courthouse constructed in 1939 to 1940 at a cost of $90,000.
County Courthouse – Dimmitt
Commissioners Court
Photos taken 2006, 2016 and 2019