In Canada, Vancouver comes closest to having a secondary city that is quite significant compared to the primary central city. Abbotsford - Mission pictured in the map below is a separate CMA.
Vancouver CMA: 2,463,431 (2016)
City of Vancouver: 631,486
City of Surrey: 517,887
City of Burnaby: 232,755
City of Richmond: 198,309
City of Coquitlam: 139,284
District Municipality of Langley: 117,285
City of Delta: 102,238
District Municipality of North Vancouver: 85,935
City of Maple Ridge: 82,256
City of New Westminster: 70,996
City of Port Coquitlam: 58,612
District Municipality of West Vancouver: 42,473
City of Port Moody: 33,551
City of White Rock: 19,952
City of Pitt Meadow: 18,573