Ulster County is named for the Irish province of Ulster which was ten an earldom of the Duke of York and who was later King James II of England.
Surrounding County Courthouses:
N – Greene County
E – Columbia County and Dutchess County
S – Orange County and Sullivan County
W – Sullivan County and Delaware County
Created: November 1, 1683 
County Seat:
Kingston 1683 – present
County Courthouse – Kingston
Location: 285 Watt Street / Main Street
Built: 1817 – 1818
Style: Georgian
Architect: Jacob Ten Broeck, John Beekman and James Cockburn.
Contractor: Jacob Ten Broeck, John Beekman and James Cockburn.
Description: The building faces east and is a two story stone and wood structure. The building is located on landscaped grounds in the center of Kingston. The east front has a slightly projecting center section with entrance on the first story and rising to a pediment at the roof line. On the center of the roof is an octagonal cupola with dome. An addition was constructed on the west side in 1897. The architect was Andrew F Mason of Kingston.
Note: The Act of April 12, 1816 constituted Jacob Ten Broeck, John Beekman and James Cockburn commissioners “to superintend the said buildings”, each of whom was to be paid two dollars and fifty cents for every days “actual attendance” upon the duties of his office,
Note: The New York State Constitution was written in the previous courthouse rooms and adopted on April 20, 1777. The previous courthouse was built in 1773 and demolished in 1817.
County Courthouse - Kingston
County Courthouse Addition - Kingston
Photos taken 2014