FEMA flood zones · Mississippi

Marion County, Mississippi Flood Zone Map

685 flood insurance claims·$7.3M paid·10 federal flood & hurricane disasters

17% of Marion County’s area is in FEMA’s high-risk flood zones.

Share of the whole county outline, rivers and lakes included; parts FEMA hasn’t mapped count as zero.

Coastal high risk (V, VE)FloodwayHigh risk (A, AE)Moderate (X, 500-year)Minimal (X)Undetermined (D)

Shaded areas are FEMA’s mapped flood hazard zones in and around Marion County, Mississippi. Zoomed out they are simplified; at street level the map switches to FEMA’s exact layer. Tap anywhere to check that spot, or search an address above.

How Marion County floods

Flash flooding from severe weather events dominates the flood risk profile in Marion County, accounting for 79 out of 92 total flood-related events recorded over the last 30 years by the NOAA Storm Events Database. Additional recorded hazards during this period include seven tropical storms, three hurricanes, two general floods, and one tropical depression.

Recent occurrences illustrate these recurring weather patterns. In January 2024, an upper-level trough and a moist air mass produced training showers and thunderstorms that generated heavy rain and flooding across the region. Later that year, Tropical Storm Francine moved across central Mississippi on September 12, 2024, following its landfall in southern Louisiana.

NFIP claim data shows that flood losses extend across multiple zones. Zone A accounts for the highest volume with 317 claims averaging a $14,714 payout and an average recorded water depth of 4 inches. Properties located in Zone X recorded 31 claims with an average payout of $25,458 and an average recorded water depth of 5 inches, while shaded Zone X_SHADED saw 189 claims averaging $13,582 with an average recorded water depth of 2 inches. Unshaded Zone X_UNSHADED recorded 45 claims averaging $17,161 with an average recorded water depth of 3 inches, and properties with an unknown zone recorded 96 claims averaging $4,972 with an average recorded water depth of 2 inches. Homeowners and real estate agents in Zone A and Zone X variants should pay close attention to these localized flood risks.

Summary written from NOAA storm reports and NFIP claims for this county. Not a prediction.

Where the flood claims came from

42% of Marion County’s flood insurance claims were on properties rated outside FEMA’s high-risk zones.

552 NFIP claims with a recorded rated flood zone, 1978 to date. The zone is the one FEMA used to rate that policy, which may not match today’s map. Source: OpenFEMA NFIP claims.

How deep the water got

outlet80″ door12″24″36″48″60″72″84″

In flood insurance claims here that reported a flood depth, the average was 3 inches.

Drawn to scale against an 80-inch door. Even a few inches soaks flooring, the bottom of the drywall and anything plugged in near the floor.

Average of the depths reported on claims (zero and implausible values left out); FEMA’s record doesn’t say exactly where each depth was measured. Source: OpenFEMA NFIP claims.

Flood claims, year by year

The worst year was 1980, with 111 claims and $359,835 paid, the year of Storms, Flood, Mudslides & Tornadoes.

1978: 1 claims1979: 78 claims1980: 111 claims1982: 10 claims1983: 104 claims1985: 1 claims1987: 55 claims1988: 4 claims1989: 7 claims1990: 24 claims1991: 16 claims1992: 1 claims1993: 5 claims1994: 3 claims1995: 2 claims1997: 40 claims1999: 11 claims2000: 4 claims2001: 11 claims2002: 1 claims2003: 8 claims2004: 7 claims2005: 31 claims2006: 3 claims2007: 7 claims2008: 20 claims2009: 6 claims2010: 1 claims2011: 16 claims2012: 12 claims2013: 4 claims2014: 4 claims2015: 1 claims2016: 41 claims2017: 1 claims2018: 8 claims2019: 1 claims2020: 21 claims2021: 1 claims2022: 1 claims2025: 2 claims19801990200020102020

Bar height is scaled by square root so ordinary years stay visible next to the worst one. NFIP claims by year of loss. Source: OpenFEMA.

In their words

35 NOAA storm reports from Marion County describe what happened, in the words of the forecasters who covered it. Read the Mississippi flood stories →

Federal disasters

37 federal disaster declarations since 1969, 10 of them floods, coastal storms or hurricanes.

DisasterBegan
Severe Winter StormJan 23, 2026
Severe Storms, Straight-line Winds, Tornadoes, And FloodingMar 14, 2025
Hurricane IdaAug 28, 2021
Hurricane DeltaOct 7, 2020
Hurricane SallySep 14, 2020
Hurricane Marco And Tropical Storm LauraAug 23, 2020
Severe Storms, Flooding, And MudslidesFeb 10, 2020
Severe Storm, Straight-line Winds, And FloodingOct 26, 2019

Weather and water disasters only; most recent first. Source: OpenFEMA Disaster Declarations.

Recorded flood events

92 since 1996: 79 flash floods and 2 river or area floods.

EventDateDamage
Flash FloodJun 9, 2025$12,000
Flash FloodJan 24, 2024$75,000
Tropical StormSep 12, 2024$10,000
Flash FloodMar 18, 2022$2,000
Flash FloodApr 5, 2022$5,000
Tropical StormAug 29, 2021$30,000
Flash FloodFeb 11, 2021$25,000
Flash FloodFeb 11, 2021$3,000

— = no damage estimate in the record. Source: NOAA Storm Events Database.

From the storm reports

Flash Flood · Jun 9, 2025. A few rounds of storms impacted the region between the 9th and 11th of June. A combination of a few storm clusters along with scattered activity resulted in isolated damaging winds and localized flash flooding.

Flash Flood · Jan 24, 2024. With an upper-level trough of low pressure situated over Central Plains and a very moist air mass extending north through the Mississippi River Valley, training showers and thunderstorms produced heavy rain and flooding over parts of Mississippi.

Tropical Storm · Sep 12, 2024. Tropical Storm Francine made landfall in southern Louisiana on the evening of September 11th, 2024. The weakening storm produced strong wind damage as it moved across central Mississippi the morning of September 12th, 2024.

Flash Flood · Mar 18, 2022. Showers and thunderstorms developed in the warm, moist airmass south of a warm front. Some storms were severe and produced wind damage to portions of southeast Mississippi. Flash flooding occurred as storms began to move over the same region.

National Weather Service narratives, lightly trimmed. Source: NOAA Storm Events Database.

The zones you’ll see on the map

Every colour on the map above is a place on this drawing: where the ground sits relative to the flood FEMA plans for.

Cross-section of a river floodplainDiagram: a river valley. The floodway is the channel and the land beside it; the 1%-annual-chance flood surface (the base flood elevation) covers the valley floor as zone A or AE; a narrow band higher up is shaded X, the 0.2% floodplain; higher ground is X.0.2% CHANCE A YEAR (500-YEAR)BASE FLOOD ELEVATION · 1% A YEARXAEFloodwayAEX
  1. A / AE Inside the 1%-a-year floodplain: about a 26% chance of flooding over a 30-year mortgage. AE has a mapped base flood elevation; plain A does not.
  2. Floodway The channel and the land beside it that has to be kept clear enough to carry the flood. Building here is tightly limited.
  3. X shaded The 0.2% (500-year) floodplain, plus some levee-protected and very shallow flood areas.
  4. X Outside both lines. No federal requirement to insure, which is not the same as no risk.

Every flood zone code explained →

Flood insurance in Marion County

If a building in Marion County is in a high-risk zone (A or V) and its mortgage comes from a federally regulated or insured lender, or is federally backed, flood insurance is required.

Outside those zones it is optional, and often worth having: from 2014 to 2024 nearly one-third of NFIP claims came from outside the high-risk Special Flood Hazard Area. Since Risk Rating 2.0, NFIP premiums are set for each building, so the only reliable price is a quote: FloodSmart.gov or a local agent.