Blog · October 14, 2026 · Missouri
Perry County Flood Zone Map in Missouri
Look up any Perry County address on FEMA's flood map, read the zone, and match it to the parcel record for land around Frohna.
Main page: Perry County, MO GIS & Parcel Viewer (official map link, Perry County facts and neighboring maps).
Platbookmapper is an Amazon Associate. If you buy through an Amazon link on this page, we earn a commission. The link is a product, not the county map.
Land along Capes on the Mississippi River and the flats outside Perryville are where a Perry County flood zone map lookup matters most. For any tract in Perry County, Missouri, the answer affects insurance, permits and resale.
Next: FEMA's search tool, the zone labels you'll see for Perry County, and how the parcel record confirms which tract you're on.
How to use the Perry County flood zone map
The authoritative source for a Perry County flood zone map is FEMA, so begin at the FEMA Flood Map Service Center. If a tract near Altenburg has no street number yet, search the nearest road and pan to it. On acreage outside Frohna, FEMA's National Flood Hazard Layer viewer draws the zones over aerial imagery; zoom to the tract near Altenburg and click. Then open the Perry County CAMAvision map for Perry County to confirm the parcel near Frohna. Match the Perry County lines and acreage to the FEMA view, since flood maps don't draw property lines in detail.
Finding the tract on the Perry County map
The county's own public map is the Perry County CAMAvision map, built on a CAMAvision parcel map, and it opens without an account for parcels in Altenburg and the rest of the county. Most people locate their Perry County tract fastest by searching an address in Longtown, then clicking the outline. Our Perry County, MO page keeps the official link and the maps next door to Longtown in one place.
Towns and land across Perry County
Town lots cluster around Perryville, the county seat, and Altenburg, Frohna, and Longtown. Smaller places such as Biehle, Brewer, and Lithium appear on the county map as little clusters of lots. Roughly 474 square miles of land and about 18,950 residents (2023 estimate) make up Perry County. Beyond the town lots in Altenburg, expect big rural parcels across the county.
Reading the zones on a Perry County flood map
Any Perry County parcel shaded as Zone A, AE, AH or AO sits in what FEMA calls a Special Flood Hazard Area, land with a 1-percent chance of flooding in any given year (the base or 100-year flood). A surveyor working near Frohna uses the base flood elevation printed for AE zones; unnumbered A zones don't have one. Land near Altenburg in shaded X (Zone B on older maps) is moderate risk, between the 1-percent and 0.2-percent annual chance lines. Unshaded X (or C) on the Perry County panel means minimal risk.
Recorded documents in Perry County, Missouri
For land near Longtown, the deed itself lives in the county recording office, and the map is an index to it. A deed book and page or instrument number on the county record is the fastest way to order the document for a lot in Longtown.
Waterfront parcels near Altenburg
In Perry County, look closest at tracts along Capes on the Mississippi River. Waterfront and bottomland parcels near Frohna often carry a zone along one edge, so check where the buildable part sits. Small streams and ditches near Frohna may not be studied in detail, which is why it's worth walking the ground after a heavy rain.
Near the Perry County line
Near the edge of the county, check the next map over: Jackson County, IL, Randolph County, IL, Union County, IL, Bollinger County, and Cape Girardeau County all border it. Our Missouri page links each map neighboring Perry County.
Flood insurance and building rules in Perry County
Here's why the zone matters at a closing in Frohna. If a house near Altenburg is mapped in a high-risk zone and is financed by a regulated or federally insured lender, the lender must require flood coverage under the Flood Disaster Protection Act, wherever the community joins the NFIP. Outside the A zones around Altenburg, coverage is optional, although some lenders require it anyway. If a building near Altenburg sits above the flood line, FEMA's LOMA process allows a review; a surveyor near Altenburg can supply the elevation data. New construction in a Perry County Special Flood Hazard Area generally needs a floodplain permit; the Perry County floodplain administrator can say what applies.
Quick answers for Perry County
What does 100-year flood mean for Perry County land?
Not at all; a Perry County tract in that zone faces a 1-percent annual chance, so floods can come in back-to-back years.
Is there a floodplain layer in the Perry County CAMAvision map?
Some county viewers carry a flood layer, but FEMA's Flood Map Service Center is the official source for Perry County.
Is Zone AE near Longtown high risk?
For a Perry County parcel, Zone AE means a Special Flood Hazard Area with a 1-percent annual chance of flooding and a published base flood elevation.
Who prepares an elevation certificate for a house in Altenburg?
A licensed surveyor or engineer prepares it, and the building office serving Altenburg may already have one on file for newer construction.
How do I challenge a flood zone for a lot in Altenburg?
FEMA reviews requests such as a LOMA for Perry County properties; start with an elevation certificate.
What is a base flood elevation for a Perry County property?
For a county property in Zone AE, it's the projected water surface in the base flood, and a surveyor compares the building near Altenburg to it.
Open the official Perry County, MO parcel map Perry 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.