Property records coverage, state by state.
~115.3M residential parcels across 50 states and DC on the September 2026 snapshot. Pick a state for its parcel count and the fill rate of every structure, value and sale field, measured, not assumed.
The national file is one record per parcel, assembled from county assessor rolls and recorder filings and keyed so that assessor, deed, mortgage, permit, listing and valuation data land on the same parcel ID. Coverage is every county in the country, but counties do not all publish the same fields, so the useful question is not whether a state is covered but how often each field is filled. These pages answer that with measured fill rates on residential parcels: the share carrying year built, living area, roof cover, a current valuation, a recorded sale, and the rest.
Read the fill rates before scoping a project. Owner name, mailing address, assessed value, lot size and coordinates are close to complete everywhere. Structure characteristics are the thin fields, and a few states publish very little of them; in those the roof or year-built gap is usually closed from permit history or a valuation model rather than the assessor. Each state page pairs with the same state's real estate license coverage, the people side of the same market.
Denominator is parcels with a residential land use code. National fill on this basis: year built ~90%, living area ~90%, current valuation ~95%, roof cover ~55%.