Radon · New Jersey
Radon in New Jersey
Of the 8 New Jersey ZIPs zipradar carries, 1 sits in EPA Radon Zone 1 (highest predicted potential, above 4 pCi/L), 7 in Zone 2 (moderate, 2–4 pCi/L). The zone is a county-level EPA prediction, not a reading from any building — it narrows the question but does not settle it, and EPA's own guidance is that the only way to know a specific home is an at-home test kit.
Last verified 2026-09-24 · methodology
Radon by ZIP code in New Jersey
EPA's county radon zone for each ZIP zipradar covers. Tap a ZIP for what the zone means and how to test.
| ZIP | EPA radon zone |
|---|---|
| 07302Jersey CityHudson County | Zone 2 · moderate |
| 07103NewarkEssex County | Zone 2 · moderate |
| 07666TeaneckBergen County | Zone 2 · moderate |
| 08540PrincetonMercer County | Zone 1 · highest |
| 07030HobokenHudson County | Zone 2 · moderate |
| 07604Hasbrouck HeightsBergen County | Zone 2 · moderate |
| 08901New Brunswick (NJ)Middlesex County | Zone 2 · moderate |
| 08902North BrunswickMiddlesex County | Zone 2 · moderate |
County-level figures from EPA Radon Zones, joined to each ZIP by county. None of them is a measurement at a specific address.
What lands here
Pages show the county zone, what the classification means for home testing recommendations, and state-level supplementary data where available.
Source & refresh
EPA Radon Zones. Refreshed static 1993 baseline plus state-level supplementary updates. Primary source →
New Jersey top concern
Lead service lines, coastal flood, sea-level rise
New Jersey has heavy LCRR obligations in Newark, Trenton, Camden, Paterson — Newark's 2018-2021 lead crisis triggered statewide LSL replacement requirements. Coastal AE/VE FEMA zones from Sandy Hook to Cape May face accelerating Risk Rating 2.0 premium pressure.
See New Jersey state page for the full state-level rollup across all 12 dimensions.
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