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Once a census metropolitan area (CMA) or census agglomeration (CA) has been subdivided into census tracts, the census tracts are maintained even if the core population subsequently declines below 50,000Census AbbreviationsAbbreviationDescriptionPRProvince or territoryDPLDesignated placeFEDFederal electoral districtEREconomic regionCDCensus divisionADAAggregate dissemination areaCCSCensus consolidated subdivisionCSDCensus subdivisionDADissemination areaDBDissemination blockPNPlace nameCMACensus metropolitan area / Census agglomeration (Note: This geographic area variable acronym is used for census metropolitan area / census agglomeration and for non-census metropolitan area / census agglomeration.)POPCTRRAPopulation centre and/or Rural areaCTCensus tractDISgaDissolved geographic areaSACStandard area classificationXPRSecondary province codeCensus Data Field Names and DescriptionsNameDescriptionuidUnique identifierpopPopulationtdwellTotal private dwellingsurdwellPrivate dwellings occupied 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