Compare · DC · MD
ZIP 20001 vs ZIP 20815
Washington, DC compared to Chevy Chase, MD on twelve public-records dimensions sourced from EPA, FEMA, USDA, FBI, NCES, and county records. Each cell links to the per-ZIP topic page where the source citation and refresh cadence live.
Last verified 2026-05-13 · methodology
Side by side
| Dimension | ZIP 20001 | ZIP 20815 |
|---|---|---|
| Water quality EPA SDWIS | Open water quality for 20001 → | Open water quality for 20815 → |
| Flood zone FEMA NFHL | Open flood zone for 20001 → | Open flood zone for 20815 → |
| Wildfire risk USDA Forest Service | Open wildfire risk for 20001 → | Open wildfire risk for 20815 → |
| Air quality EPA AirNow | Open air quality for 20001 → | Open air quality for 20815 → |
| Crime FBI UCR | Open crime for 20001 → | Open crime for 20815 → |
| Schools NCES Common Core | Open schools for 20001 → | Open schools for 20815 → |
| Radon EPA Radon Zones | Open radon for 20001 → | Open radon for 20815 → |
| Lead pipes EPA LCRR / RTI | Open lead pipes for 20001 → | Open lead pipes for 20815 → |
| Property tax County assessor | Open property tax for 20001 → | Open property tax for 20815 → |
| Deed activity County recorder | Open deed activity for 20001 → | Open deed activity for 20815 → |
| Zoning Municipal planning | Open zoning for 20001 → | Open zoning for 20815 → |
| Sex offender registry NSOPW (deep-link) | Open sex offender registry for 20001 → | Open sex offender registry for 20815 → |
Dimensions populate live as ingestion reaches each source. Every row will link to the primary regulator.
District of Columbia context
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.
Maryland context
Chesapeake flood, lead pipes
Maryland has dense FEMA NFHL coverage along Chesapeake Bay tributaries. Baltimore City has extensive LCRR lead-service-line obligations and flagged EPA SDWIS compliance history. Radon Zone 1-2 across most counties.
Read more on cross-ZIP comparisons
Editorial deep-dives that help when reading two places side-by-side — what each data layer actually proves, and what it doesn't.
Flood zones explained — what AE, X, and VE actually mean
Plain-English guide to FEMA flood-zone codes (A, AE, AH, V, VE, X, X-shaded). What the 1% and 0.2% annual-chance zones mean for your property and your insurance.
EPA Radon Zones — what 1, 2, and 3 mean and when you should test
EPA classifies every US county into Zone 1 (high), Zone 2 (moderate), or Zone 3 (low) for radon. Plain-English guide to the classifications and at-home testing.
FBI UCR and NIBRS — what crime statistics actually show (and don't)
The FBI's Uniform Crime Reporting (UCR) program and its successor NIBRS aggregate crime data from local agencies. Plain-English guide to what gets reported, what doesn't, and how to read the numbers.
Lead and Copper Rule 2024 — the federal lead-pipe inventory mandate
The 2024 Lead and Copper Rule Revisions (LCRR) require every US community water system to inventory and report lead service lines. Plain-English guide.
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