What flood zone is Unincorporated Palm Beach County, FL in?

Unincorporated Palm Beach County is not in a single flood zone — of 136,152 mapped parcels, 6% are in a high-risk Special Flood Hazard Area and the rest are in moderate- or minimal-risk zones. The zone that applies is the one covering your specific parcel.

Do homes in Unincorporated Palm Beach County need flood insurance?

Homes in Unincorporated Palm Beach County inside a Special Flood Hazard Area (6% of mapped parcels) need flood insurance if the mortgage is federally backed. Outside the SFHA it is optional but often cheap — and roughly a quarter of NFIP claims come from those lower-risk zones.

Unincorporated Palm Beach County flood zones, parcel by parcel

Of the 136,152 Unincorporated Palm Beach County parcels we map, 7,828 (6%) sit in a FEMA Special Flood Hazard Area — where flood insurance is required with any federally backed mortgage. City-level answers hide that the line runs street by street; this is the actual parcel count, computed from Palm Beach County's effective FEMA layer.

The breakdown

Zone	Parcels	Share	What it means
X	127,684	93.8%	Minimal — outside the mapped floodplain
AO	3,162	2.3%	High risk — sheet flow on sloping ground
AE	2,854	2.1%	High risk — inside the 1% annual chance floodplain
VE	929	0.7%	Coastal high-hazard — storm waves on top of flooding
AH	630	0.5%	High risk — shallow ponding, usually 1 to 3 ft
D	417	0.3%	Undetermined — never studied
A	253	0.2%	High risk — no base flood elevation published
X500	223	0.2%	Moderate — 0.2% annual chance, the shaded X

The median county market value of a flood-zone parcel in Unincorporated Palm Beach County is $390,260, against $401,107 outside the floodplain. The market already prices some of the flood risk in — which cuts both ways in a negotiation: a flood-zone address is not automatically a discount case, and a zone X address is not automatically fairly priced.

16% of Unincorporated Palm Beach County's flood-zone homes were built before 1975 — before the first FEMA maps applied here. Pre-FIRM buildings often sit below today's base flood elevation; an elevation certificate can move the premium by thousands either way, and substantial-improvement rules limit what you can renovate without elevating.

Check the exact parcel

Zone boundaries in Unincorporated Palm Beach County run down the middle of streets and sometimes straight through lots. The designation that matters — for insurance, for lending, for what you can build — is the one on the panel covering your specific parcel, with its base flood elevation where one applies.

Check any Miami-Dade, Broward or Palm Beach address

Flood zone and base flood elevation, zoning, comparable sales and the tax reset a buyer inherits. No sign-up.