[8] The parish was named in honour of Robert Monckton,[9] the British commander who captured Fort Beauséjour and oversaw the Expulsion of the Acadians.

The northeastern corner of the parish extended past the northern line of Westmorland County.

[12] In 1835 all of Dorchester Parish north of the mouth of Fox Creek was transferred to Moncton.

[13] In 1850 the western boundary was changed to match the prolongation of the eastern line of a block grant to Martin Gay and associates straddling the Petitcodiac River, adding part of Salisbury Parish.

[16][17][18] Parish population total does not include city of Moncton, Soegao 35 Indian reserve, and portions in Dieppe and Salisbury Mother tongue (2016)[26]