North Fraser County, British Columbia

North Fraser County is the most populous county in the Canadian province of British Columbia. It is home to the provincial capital of New Westminster and the county seat of Burnaby, as well as Vancouver, British Columbia's most populous city, and thus forms the central and most densely populated part of the Lower Mainland. In December 2020 North Fraser County had an estimated population of 5.27 million, making it by far the most populous of the Lower Mainland's six counties.

Along with the Lower Mainland's other counties, North Fraser County is policed entirely by the Lower Mainland Constabulary (LMC), except for law enforcement operations at the provincial level and security of provincial courts and government institutions, which are handled by the BC Sheriff Service, and federal law enforcement matters which fall under RCMP jurisdiction.

Municipalities
Below is a list of all municipalities in North Fraser County, arranged in descending order by estimated population as of December 2020; there are no unincorporated communities within the county: