Cheswick is a borough in Allegheny County, Pennsylvania, United States. The population was 1,672 as of the 2020 census.

Cheswick, named for a town in England, is a little town of roughly 350 acres (1,400,000 m). The history of the lands of Cheswick seems to have belonged to the Keen family at least in part, for Archie Pillow, or Pillar, as spelled in archaic records, inherited estate from the Keen family. That land, in part, is where Cheswick is today. Archie’s brother, George, once owned the second oldest home in the community. Thomas Pillow owned the home from Highland Avenue to the Harmar Township line.

The level land close the Allegheny River was used as farmland (Borland farm). Borland & Truck farms sold vegetables to Pittsburgh in the days of the canal. Barges and rafts of lumber were floated down the river to the steel mills. The men were fed by women who took baked goods out to the slow-moving barges in boats. In the days of the canal, wealthy families built good Victorian houses along the canal. Later, when the railroad bought out the right of way, the noise and dust became distressing and many houses became govern down and neglected.

Among the further on names are Borland, Pillows, Macleans, Wilsons, Stewarts, Lemons, Albertsons, Buntings, Cummings, Shoops and Armstrongs. The Armstrong intimates lived in Acmetonia until after the Civil War. One built the Good stone home next to the Cheswick Theater (which has back been demolished), and he served as postmaster in the borough.