Dukes County is named after the Duke of York and was a part of Dukes County, New York.
Surrounding County Courthouses:
N – Barnstable County and Atlantic Ocean
E – Atlantic Ocean and Nantucket County
S – Atlantic Ocean
W – Barnstable County and Atlantic Ocean
Created: November 1, 1681 
County Seat:
Edgartown 1681 – present
County Courthouse – Edgartown
Location: 81 Main Street / School Street
Built: 1857 – 1858
Style: Georgian
Architect: Harold Sleeper
Contractor: Thomas Coffin, Richard Coffin and Thomas Coffin Jr.
Description: The building faces south and is a two story red colored brick structure. The building is located on landscaped grounds. The south front has a one story white colored portico. Vertical pilasters are across the front with a wide white colored band below the roof line. The large courtroom is location on the second story on the south side. East and west wings were constructed in 1954.
Note: The first courthouse was built in 1721. The present courthouse was the first brick building in Edgartown.
County Courthouse - Edgartown
Photos taken 2017