Onondaga County property data
181,909 properties in Onondaga County, New York are on the live map, 3,125 of them carrying linked permit, violation, sale, or event records. These are the map's own served counts — the same numbers any visitor can verify by opening the county on the map.
Coverage in Onondaga County
Parcel layer is live; record linkage for this county is still being built out. Every property sits on the owned county parcel layer; linked records draw from building permits, code violations, complaints, deeds and sales, assessments, and certificates of occupancy where the county and its cities publish them. Coverage grows continuously — counts on this page refresh with the map pipeline. How records attach to parcels, including published per-county match rates, is documented on the data quality page and the methodology page.
Look up a single property
Any address in Onondaga County can be opened as a free property report — permits, violations, sales, and parcel facts for that one property — on the property report page, or browsed visually on the live map.