Blog · October 14, 2026 · Illinois
Using the Maryville Flood Zone Map
The zone on FEMA's map affects insurance, building and resale near Pontoon Beach.
Main page: Madison County, IL GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Before an offer near Edwardsville, look at the Maryville flood zone map: the zone on that map shapes insurance, building rules and resale. What this Maryville guide covers: finding the address on FEMA's map, decoding A, AE and X, and confirming the outline on the county map.
Checking the Maryville flood zone map step by step
The official source is FEMA's Flood Map Service Center: search an address around Pontoon Beach, and choose the dynamic map. A tract near Pontoon Beach without an address can still be found: zoom in from Interstate 255 and click inside the land.
Pulling up a parcel
Begin with the Madison County parcel viewer; it includes each assessed parcel from Pontoon Beach to Roxana. For acreage around Edwardsville, put in a street address, an owner's name or a parcel number, then pick the result to center the map on it. In and around Glen Carbon, a pop-up or side panel usually lists the owner of record, assessed acreage, a parcel ID and sometimes recent sales.
What to request from a seller
Ask the seller about past flood claims on the property near Edwardsville; getting a quote early keeps the budget honest.
Maryville, IL: the basics
Maryville sits in Madison County, Illinois, which means parcel data comes from the county. For a home near Roxana, city or town hall handles matters such as zoning, permits and utilities inside its limits, and the county still keeps the parcel and deed records. Lots just outside the town limits toward Glen Carbon often follows county rules, not municipal ones.
Using it on a phone
Most viewers work in a phone browser, useful out on a road near Glen Carbon, but coverage can be spotty out of town. A screenshot of the parcel near Glen Carbon with its ID keeps working without signal.
Where the recorded documents are
The map is an index, not the title: deeds, plats and easements for land near Pontoon Beach are kept by the county Recorder of Deeds (in many counties the County Clerk and Recorder). Inherited tracts near Pontoon Beach may sit on several deeds, so a title company is worth hiring on a real sale.
Decoding the flood zone labels
For a tract near Pontoon Beach, any A or V zone are Special Flood Hazard Areas, land with a 1-percent chance of flooding in any year. Closer to Glen Carbon, a shaded X area is moderate risk, roughly the 100- to 500-year range; unshaded X means minimal mapped risk.
Lining it up with the parcel map
FEMA's map shows zones but not ownership, so pair it with the Madison County parcel viewer to confirm you have the right parcel near Pontoon Beach.
Money questions tied to the zone
For a home near Glen Carbon, get the Elevation Certificate if one exists: it records the building's elevation against the base flood. New construction in a floodplain near Edwardsville can trigger elevation rules; call the permitting office before you plan.
Beyond the mapped zones
Small streams around South Roxana aren't always studied in detail, so walk the land after rain. Marshy spots near Roxana can limit building too; the National Wetlands Inventory mapper shows mapped wetlands.
Land on the county line
Madison County meets Bond County, Clinton County, Jersey County, Macoupin County, and Montgomery County, all with their own assessor records. Ground near Edwardsville that runs to the line can show up in two county records, so check the adjacent map before you assume the acreage. If you're looking near Roxana, our state page lists every bordering county map for Illinois.
Getting your bearings
Edwardsville is the county seat, where most land records are kept. You'll also find Glen Carbon, Troy, and Pontoon Beach, where town lots give way to larger tracts. About 262,752 people live in Madison County (Census Bureau estimate, 2023) spread over some 716 square miles. Madison County dates to 1812, and some chains of title near Edwardsville are long. Features like Mississippi River and Horseshoe Lake help you orient on the aerial around Roxana.
What the map can't tell you
The acreage figure is an estimate; just a licensed surveyor establishes the real boundary for a parcel near South Roxana. For a parcel near Troy, owner names and values update on a schedule, so a deed recorded last month might lag behind.
Maryville: common questions
Is AE a high-risk flood zone near Roxana?
Good question; an AE zone has a 1% annual chance of flooding and a base flood elevation, so builders near Edwardsville design to that elevation.
When is flood insurance required around Edwardsville?
Usually, for a building near Troy in an A or V zone with a federally backed or regulated mortgage, it's generally required; elsewhere it's optional.
How often are flood maps updated near South Roxana?
Short answer: a new study can move a zone line near Pontoon Beach; your community is notified before changes take effect.
What is a LOMA in Maryville?
In most cases, you can ask FEMA for a LOMA if surveyed elevations show the building near Troy is above the BFE; a surveyor's elevation data supports it.
What's a legal description for land near Pontoon Beach?
For land near Pontoon Beach, Deeds use lot and block, metes and bounds or survey descriptions, and the parcel record often summarizes it.
Open the official Madison County, IL parcel map See it 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.