Blog · October 14, 2026 · Mississippi
The Smith County Flood Zone Map: a Mississippi guide
How to check if a property in Smith County sits in a FEMA flood zone, and what the answer means for a buyer near Mize.
Main page: Smith County, MS GIS & Parcel Viewer (official map link, Smith County facts and neighboring maps).
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Before you buy a house in Taylorsville, add on to a barn near Polkville, or price a lot along the creek bottoms near White Oak, check the Smith County flood zone map. Here's how to read FEMA's map for a Smith County, MS property and match it to the parcel record.
Below are the FEMA links, a plain reading of the zone labels, notes on where water shapes land around Taylorsville, and short answers to common questions.
Look up the Smith County flood zone map step by step
Open the FEMA Flood Map Service Center and type a county street address, say one in Raleigh. The site returns the effective Flood Insurance Rate Map (FIRM) panel covering that Raleigh location, which you can view or download. If the PDF panel for Smith County is hard to read, try FEMA's National Flood Hazard Layer viewer, which displays how much of a Smith County parcel sits inside the zone. Switch to the Smith County ArcGIS parcel map and track down the same tract around Sylvarena. Laying the county parcel outline beside the FEMA shading displays if a homesite near Sylvarena sits above or inside the zone.
The county map you'll pair it with
For land around Polkville, open the Smith County ArcGIS parcel map (an Esri ArcGIS web map); it's the map Smith County itself publishes. Click any Smith County parcel near Mize to open its record: owner, parcel ID and assessed acreage are typically listed. Our Smith County, MS page keeps the official link and the maps next door to Polkville in one place.
Zone A, AE and X in plain English
Any Smith County parcel shaded as Zone A, AE, AH or AO sits in what FEMA calls a Special Flood Hazard Area, meaning FEMA estimates a 1-percent annual chance of flooding. Zone AE near Sylvarena means FEMA published a base flood elevation; plain Zone A means no detailed elevation was studied. Land near Sylvarena in shaded X (Zone B on older maps) sits in the moderate band between the 100-year and 500-year floods. Unshaded Zone X near Sylvarena is minimal risk.
Unmapped creeks in Smith County
A low spot on a Smith County tract outside any mapped zone can still flood; FEMA says moderate- and low-risk areas still carry risk.
A short buyer checklist for Sylvarena
Request any past flood claims history for a Smith County property before closing; it tells you more than the map alone. Quotes for land near White Oak depend on the zone and the building's elevation, so bring both to the agent.
Map dates and floodways in Smith County
Look at the effective date printed on the county panel, since a new study can redraw zones around Polkville. Floodways, shown as hatched areas on some panels, are the channel and nearby land that must stay open, and building there near Polkville faces the strictest rules.
Flood insurance and building rules in Smith County
The zone displays up again when a loan on a house near Sylvarena is underwritten. Where a building in Raleigh falls inside an A or V zone and carries a federally backed mortgage, federal rules call for flood insurance, as long as Smith County or the town participates in the NFIP. In Zone X near Raleigh, insurance is a choice, not a mandate, although a lender in Mississippi can still ask for it. Where a structure near Raleigh looks higher than the shading suggests, a Letter of Map Amendment request is the formal route, supported by elevation data from a licensed surveyor. Placing fill on low ground near Raleigh has to meet local floodplain rules; the county floodplain administrator can say what applies.
Smith County, MS: common questions
Can I build in a flood zone in Smith County?
Often, but local floodplain rules apply; ask the county or town building office in Sylvarena well before you buy.
Does a 100-year floodplain near Raleigh flood only once a century?
No; land near Raleigh in the 100-year floodplain carries a 1-in-100 chance in any single year, and two floods in one decade near Sylvarena are possible.
Is flood insurance required for a Zone X lot in Sylvarena?
For a Zone X house near Raleigh, federal rules don't require flood insurance; buying it is still a choice worth pricing.
My lot in Sylvarena displays Zone AE. What does that mean?
Zone AE on a lot in Sylvarena is a mapped 100-year floodplain with a base flood elevation, so mandatory insurance rules apply to federally backed mortgages.
Is my Sylvarena address in a flood zone?
Look it up at FEMA's Flood Map Service Center, then match the parcel lines in the Smith County ArcGIS parcel map; for land near Raleigh, a zone starting with A or V is high risk.
Open the official Smith County, MS parcel map Smith County in the Platbookmapper directory
Not a survey. County GIS and tax parcel maps are assessment and planning layers. They are not a substitute for a recorded plat, deed, or licensed survey, especially for fences, setbacks, or boundary disputes.