Data report
The State of US Rooftop Geocoding, 2026
Most geocoders still guess a point by interpolating along a street. We measured how much of the country can instead be resolved to an actual rooftop — from our own production index of 161,303,091 US addresses.
Figures as of 2026-08-28. Source: Weganar 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 (or parcel) result instead places the point on the actual structure or land parcel, using authoritative address-point, parcel, and building-footprint data. Across our index, 83.9% of addresses resolve that way today — and every rooftop or parcel result also carries the 15-digit 2020 Census block, which is what makes demographic and compliance joins possible without a separate pipeline.
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 | 16,559,103 | 85.6% |
| California | 11,494,552 | 93.1% |
| New York | 9,092,179 | 95.4% |
| Ohio | 8,850,315 | 88.1% |
| North Carolina | 8,419,856 | 90.5% |
| Indiana | 6,132,171 | 93.0% |
| New Jersey | 5,935,180 | 95.3% |
| Illinois | 5,477,252 | 67.7% |
| Massachusetts | 5,024,292 | 95.8% |
| Florida | 5,012,415 | 90.3% |
See every state in the full coverage table →
Methodology
- Figures are a point-in-time snapshot of Weganar's production serving index of US addresses, as of 2026-08-28.
- "Rooftop share" = points resolved to a structure/parcel location divided by all served points in that state. The remainder resolve to address points, parcel centroids, or interpolated street segments.
- Rooftop placement is derived from authoritative address-point, parcel, and building-footprint sources; the returned point's basis is labeled on every API response.
- A small fraction of records carry a malformed state field and are excluded from per-state attribution, so state totals sum to slightly less than the national figure.
Check coverage on your own addresses
Start free with 5,000 geocodes/month — every result tells you whether it's a rooftop, and 99.9% carry the Census block.