Formerly, two thirds of the  parish of Ashkirk lay in Roxburghshire and one third in Selkirkshire, including an enclave of Selkirkshire just east of the village around Synton.
In the past, two-thirds of the Ashkirk parish were in Roxburghshire and one-third in Selkirkshire, with an enclave of Selkirkshire located east of the village near Synton.