Jefferson County Flood Zones
County seat: Monticello. 14,713 residents. Coastal county — Florida Big Bend (Gulf).
Flood risk in Jefferson County
Located in Florida's Big Bend region, Jefferson County faces significant flood hazards due to its coastal classification and exposure to both storm surge and heavy rainfall. This dual risk profile means that residents in the county seat of Monticello and surrounding areas must contend with water threats originating from the Gulf of Mexico as well as inland precipitation events. The frequency of federal disaster declarations underscores this vulnerability, with recent years seeing multiple impactful systems including Hurricane Ian in 2022 and Tropical Storm Helene in 2024. Other significant events such as Hurricane Fred in 2021 and Tropical Storm Debby in 2024 have further demonstrated the area's susceptibility to severe weather patterns that strain local infrastructure. With a population of approximately 14,713 people, the community experiences recurring challenges from these high-risk flood conditions that require constant vigilance. Understanding the specific nature of these threats is essential for effective long-term planning and personal safety within the region. Residents should verify their specific flood zone designation and review evacuation routes before the start of each hurricane season.
Risk profile
Situated in the Big Bend region, Jefferson County is classified as coastal with high risks for both storm surge and rain flooding. Recent federal disaster declarations include Tropical Storm Helene, highlighting vulnerability to tropical systems. Approximately 14,713 residents across the county and its seat of Monticello face recurring threats from these severe weather patterns.
Recent FEMA-declared storms
Tropical systems that triggered federal disaster declarations covering Jefferson County (most recent first):
- TS Helene (2024)
- TS Debby (2024)
- TS Idalia (2023)
- TS Nicole (2022)
- Hurricane Ian (2022)
- Hurricane Fred (2021)
- Hurricane Sally (2020)
- Hurricane Dorian (2019)
Source: OpenFEMA Disaster Declarations Summaries.
Major cities in Jefferson County
- Monticello2,754
Source: US Census SUB-EST 2024.
Need real numbers, not estimates?
Buying or selling in Jefferson County? A local Florida agent can tell you how flood zone affects price, insurance, and closing.
FAQ
What flood zones are in Jefferson County?
Jefferson 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 Jefferson County recently?
Storms that triggered FEMA disaster declarations covering Jefferson County since 2022: Helene (2024), Debby (2024), Idalia (2023), Nicole (2022), Ian (2022). Federal disaster declarations cover both direct landfall counties and surrounding counties eligible for federal assistance.
Is flood insurance required in Jefferson 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 Jefferson County?
As a Florida Big Bend (Gulf) county, Jefferson 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 Jefferson County?
14,713 residents (ACS5 2023, US Census). The county seat is Monticello.
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.