Can you give me the address for a certain cemetery?

Most cemeteries are rural (not in cities) and don't have a postal address. If you're seeking an address to write to a rural cemetery there won't be one. Even some city cemeteries don't have postal addresses. But all known cemeteries have location addresses (for rural cemeteries, this may mean Con 1 Lot 29 of such-and-such Township) that will allow you to find the cemetery for a visit.

If you're seeking an address to a cemetery and it's not on the county page, the county host still might be able to tell you, if you email and ask. Or you can try CanadaGenWeb's Cemetery Project, or the Ontario Genealogical Society. Your OGS branch will be able to tell you where a cemetery is, and they may even do a better job of locating it than the GenWeb host because if they have transcribed the cemetery, they have actually visited it (and the GenWeb host hasn't necessarily been there!). You can get the address for a particular branch of OGS from the OGS website.