Duval County Flood Zones
County seat: Jacksonville. 1,007,189 residents. Coastal county — Northeast Florida (Atlantic).
Flood risk in Duval County
Positioned in northeast Florida, Duval County faces significant flood hazards due to its extensive coastal exposure and high rainfall potential. The region's risk profile is defined by the intersection of Atlantic storm tracks and inland waterways, creating high danger zones for both storm surge and rain-induced flooding across the metropolitan area. This vulnerability is evident in the county seat of Jacksonville and the adjacent beach communities of Jacksonville Beach and Atlantic Beach, where water levels can rise rapidly during severe weather events. Recent history underscores this threat, with federal disaster declarations issued for Hurricane Helene in 2024 and Hurricane Milton later that same year, alongside declarations for Tropical Storm Debby. The frequency of these events, which also includes Hurricane Dorian in 2019 and Hurricane Ian in 2022, indicates a persistent pattern of severe weather impacts affecting the population of over one million residents. Because flood risks vary significantly between inland neighborhoods and coastal zones, property owners must verify their specific flood zone designation and evacuation route before purchasing insurance or preparing for the upcoming storm season.
Risk profile
As a coastal county in northeast Florida, Duval County is designated with high risk levels for both storm surge and rain flooding. The county seat of Jacksonville anchors a population exceeding one million, including beach communities such as Jacksonville Beach and Atlantic Beach. Federal disaster declarations have been issued for multiple recent events, including Hurricane Helene.
Recent FEMA-declared storms
Tropical systems that triggered federal disaster declarations covering Duval County (most recent first):
- Hurricane Helene (2024)
- Hurricane Milton (2024)
- TS Debby (2024)
- TS Idalia (2023)
- TS Nicole (2022)
- Hurricane Ian (2022)
- Hurricane Isaias (2020)
- Hurricane Dorian (2019)
Source: OpenFEMA Disaster Declarations Summaries.
Major cities in Duval County
- Jacksonville1,009,833
- Jacksonville Beach23,630
- Atlantic Beach13,279
- Neptune Beach7,032
- Baldwin1,385
Source: US Census SUB-EST 2024.
Need real numbers, not estimates?
Buying or selling in Duval County? A local Florida agent can tell you how flood zone affects price, insurance, and closing.
FAQ
What flood zones are in Duval County?
Duval County contains a mix of FEMA flood zones. Coastal and low-lying areas typically fall in Special Flood Hazard Areas (zones AE, A, VE), while higher-elevation areas are usually Zone X. Use the lookup tool above to check any specific address against the live National Flood Hazard Layer.
What hurricanes have impacted Duval County recently?
Storms that triggered FEMA disaster declarations covering Duval County since 2022: Helene (2024), Milton (2024), Debby (2024), Idalia (2023), Nicole (2022). Federal disaster declarations cover both direct landfall counties and surrounding counties eligible for federal assistance.
Is flood insurance required in Duval County?
Flood insurance is federally required for any property in a Special Flood Hazard Area (zones beginning with A or V) that has a federally backed mortgage. In Zone X it is optional but often inexpensive. The lookup tool above tells you whether a specific address falls in an SFHA.
How does storm surge affect Duval County?
As a Northeast Florida (Atlantic) county, Duval faces high storm surge risk during tropical systems. Storm surge is separate from rainfall flooding and is not always reflected in FEMA flood zone designations — check your county's evacuation zone as well.
What is the population of Duval County?
1,007,189 residents (ACS5 2023, US Census). The county seat is Jacksonville.
Sources: FEMA National Flood Hazard Layer, OpenFEMA Disaster Declarations, US Census Bureau (ACS 5-year, SUB-EST 2024), Florida Department of Environmental Protection. Flood zone designations and risk profiles change over time — always verify with the official lookup before making property decisions.