Blog · October 14, 2026 · Mississippi
Union County Flood Zone Map (Mississippi)
FEMA's free flood maps and the Union County parcel viewer, used together for property near Sherman.
Main page: Union County, MS GIS & Parcel Viewer (official map link, Union County facts and neighboring maps).
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The Union County flood zone map question tends to arrive at a bad moment: a lender's letter, an insurance quote, or a permit counter in Sherman. FEMA's free Flood Map Service Center and the Union County parcel viewer answer it together.
Below are the FEMA links, a plain reading of the zone labels, notes on where water shapes land around Sherman, and short answers to common questions.
How to check the Union County flood zone map
The authoritative source for a Union County flood zone map is FEMA, so begin at the FEMA Flood Map Service Center. Search returns the effective FIRM panel for the spot in Union County, plus any pending changes FEMA has posted. For an irregular lot near New Albany, try FEMA's National Flood Hazard Layer viewer and reports the zone wherever you click near Myrtle. Switch to the Union County ArcGIS parcel map and locate the same tract around New Albany. Match the Union County lines and acreage to the FEMA view, since flood maps do not draw property lines in detail.
Finding the tract on the Union County map
For land around New Albany, open the Union County ArcGIS parcel map (an Esri ArcGIS web map); it is the map Union County itself publishes. Click any Union County parcel near Sherman to open its record: owner, parcel ID and assessed acreage are typically listed. For a backup route to the map covering New Albany, our Union County directory entry keeps the link current.
Getting oriented in Union County, MS
Town lots cluster around New Albany, the county seat, and Myrtle, Sherman, and Blue Springs. Smaller places such as Alpine, Enterprise, and Etta appear on the Union County map as little clusters of lots. Roughly 416 square miles of land and about 28,284 residents (2023 estimate) make up Union County. Platted neighborhoods near Blue Springs give way to rural acreage elsewhere in the county.
Reading the zones on a Union County flood map
For a lot in Myrtle, the label matters more than the color: A and V zones are Special Flood Hazard Areas, defined by a 1-percent annual chance of being flooded. A surveyor working near Myrtle uses the base flood elevation printed for AE zones; unnumbered A zones do not have one. Land near New Albany in shaded X (Zone B on older maps) is moderate risk, between the 1-percent and 0.2-percent annual chance lines. Unshaded Zone X near New Albany is minimal risk.
Unmapped creeks in Union County
A creek near New Albany that displays no detailed zone can still flood; FEMA says moderate- and low-risk areas still carry risk.
Union County land records
Deeds and recorded plats for Union County are filed with the chancery clerk. A deed or plat for land near Myrtle is kept by the county chancery clerk, Mississippi's land-records custodian. A deed book and page or instrument number on the county record is the fastest way to order the document for a lot in New Albany.
Tracts that cross the Union County line
Near the edge of the county, check the next map over: Benton County, Lafayette County, Lee County, Marshall County, and Pontotoc County all border it. Our Mississippi page links each map neighboring Union County.
Insurance, permits and map changes
Insurance is the practical stake for a Union County buyer. If a barn or house outside Myrtle sits in a Special Flood Hazard Area and secures a loan from a federally regulated or insured lender, flood insurance is mandatory, as long as Union County or the town participates in the NFIP. Outside the A zones around New Albany, coverage is optional, although a lender in Mississippi can still ask for it. When a Union County homesite is on a rise inside a mapped zone, a Letter of Map Amendment request is the formal route, typically backed by an elevation certificate from a surveyor who works in Union County. Adding on to a house near New Albany inside the zone has to meet local floodplain rules, so call the county or the town office in Myrtle before work starts.
Union County, MS: common questions
My house near Blue Springs is in Zone X. Is insurance required?
FEMA does not require it for a Zone X lot in Myrtle, but coverage is available and some lenders ask for it.
What if FEMA's map is wrong about my house near Blue Springs?
An owner near Blue Springs can request a Letter of Map Amendment from FEMA with elevation data, typically from a licensed surveyor.
What is a base flood elevation for a Union County property?
Near Blue Springs, the BFE is the height floodwater is expected to reach in the 1-percent-annual-chance flood, and a surveyor compares the building near Myrtle to it.
Where do I get an elevation certificate in Union County?
A licensed surveyor or engineer prepares it, and the building office serving Myrtle may already have one on file for newer construction.
My lot in Myrtle displays Zone AE. What does that mean?
Zone AE on a lot in Myrtle is a mapped 100-year floodplain with a base flood elevation, so mandatory insurance rules apply to federally backed mortgages.
Is there a floodplain layer in the Union County ArcGIS parcel map?
Look for a flood or floodplain layer in the Union County viewer, then verify the zone with FEMA.
Open the official Union County, MS parcel map Union 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.