1 Long Beach.  Assessors near Long Beach CA. Find Long Beach, CA assessor, assessment, auditor's, and appraiser's office, revenue commissions, GIS, and tax equalization departments. Assessors provide information on property and land tax assessment, property listings, values, valuations, property search, and records. Name. Location.
No, Silent Hill is not a real place. The movie version of Silent Hill is actually based on a town in Pennsylvania called Centralia. Apparently, a trash fire accidentally ignited the underground coal deposits in the 60's, and the fires have been burning underneath the town ever since.
What one can infer from this info is that Old Silent Hill was abandoned as of the 1980's following Dahlia's ritual, while the vacation town was still relatively normal until Silent Hill 2's events. Whether people lived in those parts after is not really known, though I don't believe people did.