How MIZ is defined
The share of the previous census's resident employed labour force commuting to a CMA or CA delineation core determines influence. People with no fixed workplace address are excluded.
Strong: at least 30%. Moderate: 5% to less than 30%. Weak: more than 0% to less than 5%. No influence: no commuting to a core, or fewer than 40 people in the resident employed labour force.
CSDs with fewer than 40 people in that labour force are excluded from strong, moderate and weak influence. Territories outside CAs form a separate category.