Coverage status
California coverage, one Explorer.
California UCRI is the single current statewide model across all 9,129 tract records. Environmental burden uses CalEnviroScreen 5.0 Pollution Burden percentile.
9,129
California records
2020 census tracts
9,033
Fully scored
all five current components
58
Counties
724 cities and places
74
Provisional
22 unscored records
California UCRI
Current published release | July 2026
All California tract records are present with released scores, provisional estimates, or unscorable labels. The Explorer keeps continuous county coverage at broad scales and reveals tiled tract geometry automatically as users zoom.
Environmental burden
Current source
CalEnviroScreen 5.0 Pollution Burden percentile, released July 1, 2026, supplies EBS throughout the Explorer, reports, project-area calculations, downloads, APIs, and CanoProof.
Released geography
Only verified release levels are exposed.
The Explorer and reports use geography that exists in the frozen repository. No unsupported layer is presented as available.
County
All 58 California counties are available as the default statewide map and area-report scope.
City and place
The frozen release assigns tracts to 724 cities and census-designated places using the publicly released land-area overlap rule.
Census tract
All 9,129 California 2020 census tract records are indexed. Tract geometry loads automatically as the map zooms, without a county-opening step.
ZIP/ZCTA and parcel boundaries are not part of the current frozen release, so the product does not expose ZIP/ZCTA or parcel scores or reports.