Blog · October 14, 2026 · Iowa
Coralville Flood Zone Map: checking a property's flood zone
The zone on FEMA's map affects insurance, building and resale near Oxford.
Main page: Johnson County, IA GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Ahead of any purchase around Hills, pull up the Coralville flood zone map: the zone on that map shapes insurance, building rules and resale. What this Coralville guide covers: finding the address on FEMA's map, decoding A, AE and X, and pairing it with the Johnson County Beacon site.
Getting started with the Coralville flood zone map
Start with FEMA's Flood Map Service Center: search an address around North Liberty, then open the map view for that panel. Rural land near North Liberty with no street number is still easy to locate: pan from the closest town then click the parcel area.
The viewer Johnson County publishes
Begin with the Johnson County Beacon site; it includes every tax parcel from North Liberty to Iowa City. When a rural tract has no street number, follow US Route 218 on the aerial until the lines appear, then click inside the one you want. If you're looking near Tiffin, the record panel typically gives the owner of record, assessed acreage, the parcel number and often a sale date.
Water near Oxford
Creeks and ditches near Iowa City may not have detailed mapping, so look for water marks and debris lines. Wet ground around Solon is a separate issue from flood zones; check the National Wetlands Inventory mapper for a first look.
Field tips
The parcel map usually runs in a mobile browser, which helps when you're standing on land near Hills, but coverage can be spotty out of town. A printout of the tract near Solon keeps working without signal.
Where Coralville fits in
Coralville sits in Johnson County, Iowa, so its parcels are on the county's map. With a lot near North Liberty, City or town hall handles matters such as zoning, permits and utilities within town limits, while the county keeps the tax map. Land beyond the city limits out by Tiffin generally falls under county rules, not municipal ones.
Reading A, AE and X
On ground around Solon, any A or V zone are Special Flood Hazard Areas, land with a 1-percent chance of flooding in any year. For property near Solon, minimal risk is not no risk: according to FEMA, many claims come from moderate- and low-risk areas.
Next door to Johnson County
Johnson County borders Benton County, Cedar County, Iowa County, Linn County, and Louisa County, and each of those keeps its own parcel map. A tract near the line by Oxford may show up in two county records, so open the neighboring map before you assume the acreage. If you're looking near Tiffin, our state page lists each bordering county map for Iowa.
Parcel lines plus flood zones
FEMA's map shows zones but not ownership, so check the Johnson County Beacon site too to confirm you have the right parcel near Solon.
Lenders and permits
Out toward North Liberty, get the Elevation Certificate if one exists: it records the building's elevation against the base flood. New construction in a floodplain near Solon usually means extra permit review; call the permitting office early.
Reading the legal description
Iowa follows the Public Land Survey System, so rural legal descriptions near Iowa City cite section, township and range. A standard section is about one square mile, roughly 640 acres, with 36 sections to a township, though sections near North Liberty can be irregular. Write down the legal description for the tract near Tiffin when you talk to a surveyor.
Which office to call
Deeds, mortgages and recorded plats for land near Tiffin are with the County Recorder, sometimes only in person. Building or septic questions for a lot near Oxford go to planning, building or health offices, town or county, depending on location.
The paper trail behind a parcel
The map is an index, not the title: deeds, plats and easements for land near Tiffin are kept by the County Recorder. For acreage around North Liberty, use the document number from the tax record to skip a name search.
Questions to ask before you buy
Ask the listing agent about past flood claims on the property near Iowa City; an insurance quote early keeps the budget honest.
Places you'll see on the map
Iowa City holds the county offices, home to the main records offices. Other places on the map include Tiffin, North Liberty, and Solon, where town lots give way to larger tracts. About 157,528 people call Johnson County home (Census estimate, 2023) across about 613 square miles. The county was formed in 1837, and some chains of title near Iowa City are long.
Frequently asked
Is AE a high-risk flood zone near Oxford?
In most cases, an AE zone has a 1% annual chance of flooding and a base flood elevation, which shapes building rules near Hills.
Does the county parcel map show flood zones around Iowa City?
It depends, but a flood layer may appear in the county Beacon site layer list, but FEMA's own map is the official source around Oxford.
How can I tell if a house near Hills is in a flood zone?
It depends, but look up the spot near North Liberty in FEMA's National Flood Hazard Layer viewer, and the zone code appears on the map.
Do I need to worry about flooding in Zone X around Iowa City?
It depends, but Zone X near Oxford means moderate (shaded) or minimal (unshaded) mapped risk; many owners buy coverage anyway.
Is the parcel map a survey in Coralville?
The map near Tiffin is approximate; a survey sets the real corners
Open the official Johnson County, IA 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.