Are there unique locations in gta v story mode not in online?

The Wikipedia source confirms GTA V's story mode is set in the fictional state of San Andreas and Los Santos, featuring three protagonists and heist-based gameplay. However, it does not detail differences between story mode and GTA Online locations. Without explicit evidence comparing the two modes' environments, I cannot verify unique story-exclusive locations. Rockstar Games has not publicly clarified this distinction in available documentation, so conclusions about location exclusivity remain unconfirmed in this context.