Here is valid  Canada’s PayPal state and province codes

Province nameProvince code
AlbertaAB
British ColumbiaBC
ManitobaMB
New BrunswickNB
Newfoundland and LabradorNL
Northwest TerritoriesNT
Nova ScotiaNS
NunavutNU
OntarioON
Prince Edward IslandPE
QuebecQC
SaskatchewanSK
YukonYT