The township is in the foothills of the Laurentian Mountains, not exceeding 487 metres (1,598 ft) above sea level, with a rocky, sandy, gravelly soil that is not conducive to agriculture.

However, much of the land was cleared by early Irish settlers for farming and there remains small pockets of pastures along the Dalesville River, especially in the Glen and around the town centre.

[4] It is unclear if it is named after a village in York County, England, or that it is a tribute to Sir John Wentworth (1737–1820), Lieutenant Governor of Nova Scotia from 1792 to 1808.

[3] Mother tongue (2021):[3] Wentworth forms part of the federal electoral district of Argenteuil—La Petite-Nation and has been represented by Stéphane Lauzon of the Liberal Party since 2015.

Provincially, Wentworth is part of the Argenteuil electoral district and is represented by Agnès Grondin of the Coalition Avenir Québec since 2018.