Data report
The State of US Rooftop Geocoding, 2026
Street interpolation estimates a location along a road. We measured how many indexed addresses instead have rooftop placement — from our own production index of 161,303,091 US addresses.
Figures as of 2026-10-13. Source: AddressCanvas serving index.
Why "rooftop" is the number that matters
A geocoder's job is to turn an address into a coordinate. The cheap way is interpolation: find the street segment, then estimate a spot along it based on the house number. It's fine for a map pin, but it can land a point in the road, on the wrong parcel, or hundreds of feet from the building — a real problem for insurance underwriting, delivery, solar, and property analytics.
A rooftop result places the point at a structure, using address-point, parcel, and building-footprint
data. Across our index, 83.9% of addresses
are labeled ROOFTOP. A parcel centroid is a separate placement type.
Across all indexed addresses, 99.9% carry a
15-digit 2020 Census block for geography joins. Neither share guarantees a match for a submitted address.
Coverage isn't uniform — it's a data-availability map
Rooftop coverage tracks where authoritative parcel and address-point layers exist and have been linked. Some states are nearly complete; others are still catching up as those layers are acquired and matched. Here's how the covered states rank.
| 1. Kansas | 99.6% |
| 2. Virginia | 97.4% |
| 3. District of Columbia | 97.2% |
| 4. Vermont | 96.4% |
| 5. Massachusetts | 95.8% |
| 6. New York | 95.4% |
| 7. Nevada | 95.4% |
| 8. New Jersey | 95.3% |
| 9. Missouri | 95.1% |
| 10. Washington | 94.9% |
| 1. Wyoming | 0.0% |
| 2. Rhode Island | 13.6% |
| 3. South Dakota | 14.2% |
| 4. Alabama | 40.7% |
| 5. Kentucky | 42.5% |
| 6. Iowa | 52.7% |
| 7. New Mexico | 54.3% |
| 8. Alaska | 57.4% |
| 9. Mississippi | 58.2% |
| 10. Nebraska | 59.5% |
Largest states by addresses indexed
| State | Addresses | Rooftop |
|---|---|---|
| Texas | 16,706,905 | 85.6% |
| California | 11,494,552 | 93.1% |
| Florida | 9,209,814 | 90.1% |
| New York | 9,092,179 | 95.4% |
| Ohio | 8,850,315 | 88.1% |
| North Carolina | 8,419,981 | 90.5% |
| Indiana | 6,132,171 | 93.0% |
| New Jersey | 5,935,180 | 95.3% |
| Illinois | 5,477,258 | 67.7% |
| Massachusetts | 5,024,292 | 95.8% |
See every state in the full coverage table →
Methodology
- Figures are a point-in-time snapshot of AddressCanvas's production serving index of US addresses, as of 2026-10-13.
- "Rooftop share" = records labeled
ROOFTOPdivided by all indexed address records in that state. The remainder are address points, parcel centroids, or street-segment placements. These are index-composition figures, not measured request success rates. - Rooftop placement is derived from authoritative address-point, parcel, and building-footprint sources; the returned point's basis is labeled on every API response.
- Records are attributed to a state by their state FIPS code, which locates the point; a few thousand outside the 50 states and DC count toward the national figure only.
Check coverage on your own addresses
Start free with 5,000 requests/month and inspect each result's placement. 99.9% of indexed addresses carry a Census block.