[10] The parish was named in honour of Lord George Sackville,[11] later Secretary of State for the Colonies.

[12] Sackville was erected as one of Westmorland County's original parishes in 1786[13] with enlarged boundaries; most of the modern town of Shediac was added.

[14] In 1880 the boundary with Westmorland Parish was altered, adding a large inland area to Sackville.

[17][18][25] bold indicates an incorporated municipality or rural community Bodies of water[f] at least partly within the parish.

[17][18][25][26] Parish population total does not include town of Sackville and portion within Beaubassin East