Lake County is named for Flathead Lake which lake is located in the north part of the county.
Surrounding County Courthouses:
N – Flathead County
E – Flathead County and Missoula County
S – Missoula County
W – Sanders County and Flathead County
Created: May 11, 1923 
County Seat:
Polson 1923 – present
County Courthouse – Polson
Location: 12 5th Avenue / 1st Street East
Built: 1935 – 1936
Style: Art Deco
Architect: Fred A Brinkman
Contractor: A R Elliott
Description: The building faces north and is a three story red colored brick and concrete structure. The building is located on spacious landscaped grounds in the center of Polson. The building has a raised basement. The north front has a projecting center section framing the entrance on the first story and vertical windows on the third story. There is decoration along the top of the center section and behind on the main building. The roof line is flat. In the interior, the large County District Court courtroom is located at the northwest corner of the third story and the smaller County Justice Court courtroom is located on the east side of the third story. The building houses the County District Court of the 20th Judicial District and County Justice Court. An addition was constructed in 1975. The architect was Hefty & McDonald.
See: The 20th Judicial District includes Lake County and Sanders County.
History: The county was created in 1923 and Polson was selected as the county seat. The county probably rented office premises. The first and present courthouse was constructed in1935 to 1936.
County Courthouse – Polson
Photos taken 2009 and 2022