Saint John County (2016 population: 74,020[1]) is located in southern New Brunswick, Canada.

The city of Saint John dominates the county.

Elsewhere in the county, tourism is focused around the Bay of Fundy.

[citation needed] There are two municipalities within Saint John County (listed by 2016 population):[2] The county is subdivided by the Territorial Division Act (Section 27) into one city and three parishes (listed by 2016 population):[2] As a census division in the 2021 Census of Population conducted by Statistics Canada, Saint John County had a population of 76,558 living in 34,634 of its 36,964 total private dwellings, a change of 3.4% from its 2016 population of 74,020.

[4] Highways and numbered routes that run through the county, including external routes that start or finish at the county limits:[7]