[1] The community is located along the Youghiogheny River, 14.3 miles (23.0 km) southeast of Pittsburgh.

[2] This land was conveyed by patent in 1855 to Margaret Coulter,[2] who laid out a village in 1858.

[5] Established in 1864 as Duncan, the post office was renamed Coultersville in 1894 and Coulters in 1900.

[6] The CSX Keystone Subdivision runs through Coulter along a former B&O line that was originally laid by the Pittsburgh and Connellsville Railroad.

People born in Coulter include Pittsburgh Steelers founder Art Rooney and baseball player Joe "Moon" Harris.