State · DC
District of Columbia — neighborhood data
ZIP-level federated summaries available in District of Columbia today. Full state coverage lands as the data-ingestion layer rolls out through Week 2.
Last verified 2026-06-10
District of Columbia top concern
Lead service lines (DC Water), flood
DC Water has documented elevated lead service line replacement obligations under LCRR. The Anacostia + Potomac waterfronts have FEMA AE zones; FBI UCR jurisdictional reporting for DC differs from state UCR aggregations.
See methodology for source citations + refresh cadence per dataset.
2 ZIP codes live
Browse District of Columbia ZIPs by topic
Pick a topic to dive deeper across District of Columbia addresses. Each topic page explains the source, refresh cadence, and limitations.
EPA SDWIS
Water quality
FEMA NFHL
Flood zone
USDA Forest Service
Wildfire risk
EPA AirNow
Air quality
FBI UCR
Crime
NCES Common Core of Data
Schools
EPA Radon Zones
Radon
EPA LCRR + RTI National Lead Pipe Map
Lead pipes
County assessors
Property tax
County recorders
Deed activity
Municipal planning departments
Zoning
NSOPW (federal deep-link)
Sex offender registry
District of Columbia counties
County-level rollups for property tax, deeds, and EPA radon zones.
Browse District of Columbia counties →Frequently asked questions
How many ZIP codes does zipradar cover in District of Columbia?
2 ZIP codes are live in District of Columbia today. Coverage expands to top 500 ZIPs by Week 2 and full 41,000+ US ZIPs by Month 2. Each ZIP page federates 12 dimensions: water, flood, wildfire, crime, schools, radon, air, lead, property tax, deeds, zoning, and sex-offender registry.
What is the top neighborhood-data concern in District of Columbia?
Lead service lines (DC Water), flood. DC Water has documented elevated lead service line replacement obligations under LCRR. The Anacostia + Potomac waterfronts have FEMA AE zones; FBI UCR jurisdictional reporting for DC differs from state UCR aggregations.
What data sources does zipradar use for District of Columbia?
Federated from EPA SDWIS (drinking water), FEMA NFHL (flood), FBI UCR + Crime Data Explorer (crime), NCES CCD (schools), USFS (wildfire risk), EPA Map of Radon Zones, plus District of Columbia county assessors and recorders for property tax + deeds. Every claim cites its source; see /methodology for refresh cadence.
Where can I see county-level data for District of Columbia?
District of Columbia county dashboards roll up property tax (assessor), deeds (recorder), and EPA radon zones at the county tier. Browse /county/dc/ for the full county index — coverage matches ZIP rollout schedule.
District of Columbia-specific data sources
zipradar federates state-level data from EPA SDWIS (drinking water), FEMA NFHL (flood), FBI UCR (crime), NCES CCD (schools), plus county assessors and recorders where published. See the methodology page for the full source list and refresh cadence.