Cheswick is bordered by Acmetonia in Harmar Township on the west, by Springdale Township on the north, by Springdale Borough on the east, and by Plum Borough on the south (across the Allegheny River).
The Haggerstons married into many great families, such as the Cheswick family, gaining large amounts of land, but Haggerston eventually became a minor estate, connected to the Maxwell and Constable families, and passed to the Maxwell Lord Herries of Terregles, through Winifred Maxwell, who married William Haggerston-Constable, second son of the third Baronet.