Blog · October 14, 2026 · Illinois
Macoupin County Flood Zone Map, Illinois
FEMA's free flood maps and the Macoupin County parcel viewer, used together for property near Benld.
Main page: Macoupin County, IL GIS & Parcel Viewer (official map link, Macoupin County facts and neighboring maps).
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Is that lot in Benld in a flood zone? The Macoupin County flood zone map answer comes from FEMA, and it's free to look up. FEMA's free Flood Map Service Center and the Macoupin County parcel viewer answer it together.
Next: FEMA's search tool, the zone labels you'll see for Macoupin County, and how the parcel record confirms which tract you're on.
How to use the Macoupin County flood zone map
Open the FEMA Flood Map Service Center and type a county street address, say one in Gillespie. The site returns the effective Flood Insurance Rate Map (FIRM) panel covering that Gillespie location, which you can view or download. For an irregular lot near Staunton, FEMA's National Flood Hazard Layer viewer draws the zones over aerial imagery, which shows how much of a county parcel sits inside the zone. Switch to the Macoupin County parcel viewer and find the same tract around Staunton. Match the Macoupin County lines and acreage to the FEMA view, since flood maps do not draw property lines in detail.
Opening the Macoupin County parcel viewer
The county's own public map is the Macoupin County parcel viewer, and it opens without an account for parcels in Mount Olive and the rest of the county. Use the search box for an address in Mount Olive or a parcel number, or simply zoom in and click a tract around Benld. Bookmark our Macoupin County page too; it tracks the official Illinois link if it moves and lists the maps around Mount Olive.
Tracts that cross the Macoupin County line
A farm near the county line can carry separate records in Greene County, Jersey County, and Madison County as well. Every map bordering Macoupin County is listed on our Illinois directory.
Where Macoupin County land records are kept
The parcel layer for Macoupin County points back to recorded deeds and plats, kept by the county's recording office (its title varies by state). Easements and access rights near Carlinville live in recorded documents, so read the deed, not just the county map.
From Carlinville to the back roads
Town lots cluster around Carlinville, the county seat, and Benld, Bunker Hill, Gillespie, and Girard. Smaller places such as Anderson, Atwater, and Barr appear on the county map as little clusters of lots. Roughly 863 square miles of land and about 44,018 residents (2023 estimate) make up Macoupin County. Platted neighborhoods near Girard give way to rural acreage elsewhere in the county. With a founding date of 1829, Macoupin County has long chains of title on some rural tracts.
Zone A, AE and X in plain English
On the FIRM covering Macoupin County, zones that start with A or V are Special Flood Hazard Areas, defined by a 1-percent annual chance of being flooded. Where a Macoupin County tract shows Zone AE, there's a base flood elevation to compare a building against; in Zone A there is not one. If a Macoupin County parcel shows shaded Zone X, it sits in the moderate band between the 100-year and 500-year floods. Unshaded Zone X near Staunton is minimal risk.
Low ground and small streams around Gillespie
Small streams and ditches near Gillespie may not be studied in detail can still flood; FEMA says moderate- and low-risk areas still carry risk.
When the map affects a deal
Insurance is the practical stake for a Macoupin County buyer. When a structure near Staunton is mapped in a high-risk zone and is financed by a regulated or federally insured lender, the lender must require flood coverage, as long as Macoupin County or the town participates in the NFIP. In Zone X near Gillespie, insurance is a choice, not a mandate; pricing a policy for land near Staunton is still worth a call. If a building near Staunton sits above the flood line, a Letter of Map Amendment request is the formal route, supported by elevation data from a professional surveyor. Placing fill on low ground near Gillespie commonly requires a permit and an elevation check, so call the county or the town office in Gillespie before work starts.
Macoupin County flood zones questions
Can I build in a flood zone in Macoupin County?
Building in a Special Flood Hazard Area near Mount Olive usually needs a floodplain permit and may require elevating the structure, so check with the county floodplain administrator.
Is flood insurance required for a Zone X lot in Mount Olive?
Not under federal rules; Zone X in Macoupin County is outside the Special Flood Hazard Area, although a lender can still require coverage.
Is there a floodplain layer in the Macoupin County parcel viewer?
Check the layer list in the Macoupin County parcel viewer; if Macoupin County includes a floodplain layer, confirm the zone on FEMA's map anyway.
How do I challenge a flood zone for a lot in Mount Olive?
FEMA reviews requests such as a LOMA for Macoupin County properties; start with an elevation certificate.
What does Zone AE mean on a Macoupin County flood map?
For a Macoupin County parcel, Zone AE means a Special Flood Hazard Area with a 1-percent annual chance of flooding and a published base flood elevation.
Is my Mount Olive address in a flood zone?
FEMA's free map service covers Macoupin County: enter the address or pan to the tract around Bunker Hill, then note the zone label.
Open the official Macoupin County, IL parcel map Macoupin 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.