I have a Business faculty member searching for DMA (Designated Market Area) regions in Canada. This seems to be more of a U.S. designation, but there are some sites (of arguably dubious appearance) offering something related, such as the following: https://dmatoolkits.com/downloads/canada-dma-database/
Does anyone know if there as good, authoritative data available?
According to the Dictionary of Marketing Communications (Sage Publications, 2004) the term Designated Market Area was created and owned by Nielsen Media Research and is (was?) used to report television audience size. I believe it only applies to US geographies. Esri has Nielsen data in ArcGIS.
See also: https://www.nielsen.com/us/en/intl-campaigns/dma-maps/