Blog · October 14, 2026 · Ohio
Reading the London Flood Zone Map for a parcel
Flood zones are set by FEMA, and checking one near South Solon takes a few minutes.
Main page: Madison County, OH GIS & Parcel Viewer (official map link, 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.
Before you buy or build near Mount Sterling, look at the London flood zone map: FEMA's zone label affects insurance, building rules and resale. In this London guide: finding the address on FEMA's map, decoding A, AE and X, and pairing it with the Ohio Statewide Parcels layer in ArcGIS Map Viewer.
Where the London flood zone map lives
Start with FEMA's Flood Map Service Center: search an address around Dublin, and choose the dynamic map. A tract near Mount Sterling without an address is still easy to locate: search the nearest road and click inside the land.
Pulling up a parcel
Begin with the Ohio Statewide Parcels layer in ArcGIS Map Viewer; it maps each assessed parcel around Mount Sterling and West Jefferson. Without an address in hand, pan along Interstate 71 and click the parcel itself. Near West Jefferson, the record panel usually lists the owner of record, acreage on the tax roll, a parcel ID and in many cases the last transfer.
What the map can't tell you
Acreage on the record is a tax-roll number; only a licensed surveyor can set the real boundary on land around West Jefferson. With a lot near Plain City, records update in batches, so a deed recorded last month can take weeks to appear.
Where London fits in
London is part of Madison County, Ohio, so its parcels are on the county's map. London is also the county seat, which puts the County Recorder close by. In and around Plain City, City or town hall handles matters such as zoning, permits and utilities within town limits, while the county keeps the tax map. Acreage past the city limits near South Solon often answers to county rules instead.
Reading A, AE and X
For acreage around Mount Sterling, any A or V zone are Special Flood Hazard Areas, land with a 1-percent chance of flooding in any year. In and around Mount Sterling, minimal risk is not no risk: FEMA notes that many claims come from moderate- and low-risk areas.
Who handles what
Deeds, mortgages and recorded plats for land near West Jefferson come from the County Recorder, often with an online index. Questions about what you can build around Plain City go to planning, building or health offices, town or county, depending on location.
Taking the map into the field
The parcel map usually runs in a mobile browser, useful out on a road near Plain City, though signal can drop in rural spots. A printout of the tract near Dublin is a good backup.
Use the county map alongside FEMA
FEMA doesn't draw property lines, so check the Ohio Statewide Parcels layer in ArcGIS Map Viewer too to see exactly which lot near South Solon you're looking at.
Money questions tied to the zone
If a building sits in a Special Flood Hazard Area and the loan is federally backed or regulated, flood insurance is generally required in communities in the NFIP, which applies near Mount Sterling as much as anywhere. New construction in a floodplain near Mount Sterling can trigger elevation rules; call the permitting office early.
Getting your bearings
London is the county seat, where most land records are kept. You'll also find West Jefferson, Midway, South Solon, and Mount Sterling, where town lots give way to larger tracts. About 44,602 people call Madison County home (Census Bureau estimate, 2023) spread over roughly 466 square miles. Madison County was organized in 1810, and some chains of title near South Solon are long.
Next door to Madison County
Madison County meets Champaign County, Clark County, Fayette County, Franklin County, and Greene County, all with their own assessor records. Acreage along the edge near South Solon can show up across two assessors' files, so check the neighboring map too. On ground around Plain City, our state page lists each neighboring county map across Ohio.
What to request from a seller
Ask the listing agent for any Elevation Certificate on the property near West Jefferson; getting a quote early avoids surprises.
Low spots and local drainage
Small streams around Plain City may not have detailed mapping, so look for water marks and debris lines. Wetlands near West Jefferson can limit building even outside a flood zone; the National Wetlands Inventory mapper shows mapped wetlands.
Questions about the London flood zone map
How often are flood maps updated near Plain City?
In most cases, a new study can move a zone line near West Jefferson; your community is notified before changes take effect.
Does the county parcel map show flood zones in London?
For most people, a flood layer may appear in the Ohio Statewide Parcels layer in ArcGIS Map Viewer layer list; confirm a lot near West Jefferson on FEMA's map either way.
What is a base flood elevation for land near Dublin?
Good question; a BFE near Mount Sterling tells builders how high the lowest floor should be, and an Elevation Certificate compares the building to it.
When is flood insurance required around Mount Sterling?
In most cases, for a building near South Solon in an A or V zone with a federally backed or regulated mortgage, it's generally required; elsewhere it's optional.
How do I save a parcel from the viewer near Dublin?
Use the print button or a screenshot, and it's worth keeping the parcel ID visible for land near Plain City.
Open the official Madison County, OH 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.