Blog · October 14, 2026 · Wisconsin
Using the Cudahy Flood Zone Map
The zone on FEMA's map affects insurance, building and resale near St. Francis.
Main page: Milwaukee County, WI GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Before you buy or build near South Milwaukee, pull up the Cudahy flood zone map: the zone on that map shapes insurance, permits and resale. What this Cudahy guide covers: finding the address on FEMA's map, decoding A, AE and X, and confirming the outline on the county map.
Checking the Cudahy flood zone map step by step
Start with FEMA's Flood Map Service Center: search an address around South Milwaukee, then open the map view for that panel. A tract near West Milwaukee without an address can still be found: search the nearest road then click the parcel area.
Opening the official parcel viewer
Begin with the Milwaukee County parcel viewer; it covers each tax parcel from West Allis to South Milwaukee. Around St. Francis, type a street address, an owner's name or a parcel number, and the viewer zooms to the match. For a tract near West Allis, the parcel card normally shows the owner of record, acreage on the tax roll, the parcel number and often a sale date.
City limits and county records
Cudahy lies within Milwaukee County, Wisconsin, which means parcel data comes from the county. For land near Oak Creek, the municipality handles things like zoning, permits and utilities for lots inside the boundary, and the county still keeps the parcel and deed records. Acreage past the city limits near St. Francis generally follows county rules instead.
What the zone letters mean
Zone AE includes a base flood elevation (BFE), and an unnumbered A zone has none; builders around Greendale design to it. For a parcel near Greendale, minimal risk is not no risk: according to FEMA, floods happen outside mapped zones too.
Where the recorded documents are
When the details count, request the recorded deed through the Register of Deeds; the parcel map near Oak Creek only summarizes it. Inherited tracts near West Milwaukee can sit on many deeds, and a title company earns its fee on a real sale.
Lining it up with the parcel map
FEMA doesn't draw property lines, so pair it with the Milwaukee County parcel viewer for the outline of the tract near West Milwaukee.
Questions to ask before you buy
Request for any Elevation Certificate on the property near Greendale; getting a quote early avoids surprises.
Milwaukee County in a few facts
Milwaukee holds the county offices, home to the main records offices. You'll also find St. Francis, South Milwaukee, Oak Creek, and Greendale, each with its own cluster of lots. Around 916,205 people call Milwaukee County home (Census estimate, 2023) on roughly 241 square miles. Milwaukee County was organized in 1835, and some chains of title near St. Francis are long. Places such as Menomonee River and Kinnickinnic River are easy to spot when you zoom out from Greendale.
Before you lean on the lines
Listed acreage is a tax-roll number; just a licensed surveyor sets the real boundary on land around West Allis. In and around West Allis, records update in batches, so a deed recorded last month might lag behind.
Insurance, lenders and building
If a building sits in a Special Flood Hazard Area and a federally regulated lender is involved, mandatory purchase rules apply where the community participates in the National Flood Insurance Program, and that holds around Oak Creek too. New construction in a floodplain near South Milwaukee can trigger elevation rules; ask the local floodplain administrator before you plan.
When a parcel crosses a boundary
Milwaukee County borders Muskegon County, MI, Ottawa County, MI, Ozaukee County, Racine County, and Washington County, all with their own assessor records. Acreage along the edge near Greendale may show up in two county records, so open the adjacent map too. For a parcel near Oak Creek, the Platbookmapper state page lists each bordering county map for Wisconsin.
Low spots and local drainage
Small streams around South Milwaukee aren't always studied in detail, so walk the land after rain. Marshy spots near South Milwaukee can limit building too; the National Wetlands Inventory mapper shows mapped wetlands.
Legal descriptions in Wisconsin
Wisconsin follows the Public Land Survey System, so rural legal descriptions near West Allis cite section, township and range. Each section is nominally a mile square, about 640 acres, with 36 sections to a township, though corrections make some sections near South Milwaukee odd-sized. Keep the legal description for land near St. Francis when you talk to a surveyor.
Quick answers
Do I need flood insurance in Cudahy?
Lenders generally require it for buildings near West Milwaukee in a Special Flood Hazard Area when the loan is federally regulated or insured; outside those zones it's your call.
What does Zone AE mean near West Allis?
Generally, an AE zone has a 1% annual chance of flooding and a base flood elevation, so builders near Oak Creek design to that elevation.
What is a base flood elevation for land near Oak Creek?
For most people, a BFE near Oak Creek tells builders how high the lowest floor should be; local rules may require building above it.
What is a LOMA around South Milwaukee?
Generally, you can ask FEMA for a LOMA if surveyed elevations show the building near West Allis is above the BFE; a surveyor's elevation data supports it.
Which office handles records for land near Greendale?
The county real property listing office handles values and the tax roll, and the Register of Deeds keeps deeds; planning offices cover zoning near St. Francis
Open the official Milwaukee County, WI 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.