Merrimack County is named for the Merrimack River which is named after the Native American word “merruasquamack” meaning “swift water place”.
Surrounding County Courthouses:
N – Grafton County and Belknap County
E – Strafford County and Rockingham County
W – Sullivan County and Grafton County
Created: 1823 
County Seat:
Concord 1823 – present
County Courthouse – Concord
Location: 163 North Main Street / Court Street
Built: 1856 – 1857
Style: Georgian
Architect: Joshua L Foster
Contractor: Unknown
Description: The building faces east and is a two story buff colored brick structure. The building is located on landscaped grounds to the north of the center of Concord. A protruding cornice runs below the roof line. On the east front the center section projects from the main building. There is an arched entrance on the first story. A new addition with main entrance is on the west side. The building was originally the City Hall. The building was remodeled in 1907. The courtroom is located on the second story. The architect was George S Forrest of Concord. The building was renovated in 1981. The architect was Dudley, Walsh & Moyer, Inc. of Concord and the contractor was A P Whitaker & Sons, Inc. of Bridgewater, Massachusetts.
See: National Register of Historic Places – Merrimack County Courthouse
New County Courthouse – Concord
Location: 163 North Main Street / Court Street
Built: 2017 – 2019
Style: Modern
Architect: C N Carley Associates Architects & Planners
Contractor: Milestone Engineering & Construction, Inc.
Description: The building faces east and is a two story buff colored brick, glass and concrete structure. The building is located on landscaped grounds on the west side of the courthouse in the center of Concord. The east front has glass panel walls with the entrance on the south side. The roof line is flat.
History: The county was created in 1823 and Concord was designated as the county seat. The first courthouse was built in 1790 as the City Hall and in 1823 the second story was built to house the courtroom and county office. The second courthouse was built in 1855 to 1857 at a cost of $56,000 and also served as the City Hall. In 1906, the City moved and the building was remodeled in 1907 and is still standing. The third and present courthouse was constructed in 2017 to 2019.
Former County Administration – Concord
Location: 163 North Main Street / Court Street
Built: 1856 – 1857
Style: Modern
Architect: Guy K C Wilson
Contractor: Bonnet, Page & Stone Corporation
Description: The building faced south and was a two story red colored brick and concrete structure. The building was located on the east sude of the courthouse and was demolished in 2018. .
District Courthouse – Concord
Location: 32 Clinton Street / Princeton Street
Built: 1990 – 1991
Style: Modern
Architect: Lavallee/Brensinger Professional Association
Contractor: Mergansee Corporation
Description: The building faces east and is a two story red colored brick and concrete structure. The building is located on landscaped grounds to the southwest of the center of Concord. The east front has a porch on the first story with four columns and recessed entrance. The south side of the east front projects from the main building and rises to a wide pediment at the roof line. Narrow horizontal bands run above the first story windows and second story windows.
See: The New Hampshire Supreme Court is located in Concord.
Other Branch Courthouse
County Courthouse – Concord
New County Courthouse
Former Administration Building
District Courthouse
Photos taken 2014 and 2018