Oakmont is a borough in Allegheny County in the U.S. state of Pennsylvania. It is a Pittsburgh suburb and part of the Pittsburgh Metro Area. Nicknamed "One Square Mile of Happiness" by the local folk. "The population was 6,303 at the 2010 census.
Incorporated as a town in 1889, this Allegheny River community began in 1816 when a farmer, Michael Bright, bought a large tract of land northeast of Pittsburgh. The settlement took its name from a landmark tree, as the deed description reads, "Beginning at a black oak on the bank of the Allegheny River ..." The borough is best known for the nearby Oakmont Country Club, a premier golf course which has been the site of numerous U.S. Opens.