Blog · October 14, 2026 · Maryland
Baltimore County Flood Zone Map in Maryland
Look up any Baltimore County address on FEMA's flood map, read the zone, and match it to the parcel record for land around Baltimore Highlands.
Main page: Baltimore County, MD GIS & Parcel Viewer (official map link, Baltimore County facts and neighboring maps).
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Is that lot in Towson in a flood zone? The Baltimore County flood zone map answer comes from FEMA, and it is free to look up. Here's how to read FEMA's map for a Baltimore County, MD property and match it to the parcel record.
The sections below go from the FEMA search to the Baltimore County parcel record, then cover insurance, permits and map changes near Arbutus.
Where to see the official Baltimore County flood zone map
The authoritative source for a Baltimore County flood zone map is FEMA, so begin at the FEMA Flood Map Service Center. The site returns the effective Flood Insurance Rate Map (FIRM) panel covering that Towson location, which you can view or download. For an interactive view of the county, try FEMA's National Flood Hazard Layer viewer and reports the zone wherever you click near Towson. Then open the Baltimore County parcel viewer for Baltimore County to confirm the parcel near Towson. Match the Baltimore County lines and acreage to the FEMA view, since flood maps don't draw property lines in detail.
Search Baltimore County parcels by owner, address or ID
Baltimore County publishes its parcels on the Baltimore County parcel viewer, free to use for a lot in Baltimore Highlands or a tract close to Arbutus. Most people locate their Baltimore County tract fastest by searching an address in Arbutus, then clicking the outline. If the official address for the Baltimore County, MD map ever changes, our directory page carries the current link for Baltimore Highlands and the rest of the county.
The lay of the land around Towson
Towson is the seat of Baltimore County and the hub for its land records. Unincorporated communities in the county, including Arbutus, Baltimore Highlands, and Bowleys Quarters, display up as small groups of parcels along the roads. Census Bureau estimates put Baltimore County at about 844,703 residents in 2023 on about 598 square miles of land. Subdivision lots dominate the county map around Towson, and open tracts are scarce.
What the flood zone letters mean
On the FIRM covering Baltimore 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 Baltimore County tract lists Zone AE, there's a base flood elevation to compare a building against; in Zone A there is not one. Land near Baltimore Highlands in shaded X (Zone B on older maps) sits in the moderate band between the 100-year and 500-year floods. Unshaded Zone X near Baltimore Highlands is minimal risk.
Deeds and plats behind the Baltimore County map
The parcel layer for Baltimore County points back to recorded deeds and plats, kept by the county's recording office (its title varies by state). Baltimore County doesn't assess its own parcels; Maryland's SDAT does, on a three-year cycle, and the Maryland Department of Planning keeps the tax maps. Easements and access rights near Arbutus live in recorded documents, so read the deed, not just the county map.
Creeks, rivers and low ground in Baltimore County
The Baltimore County landscape includes Chesapeake Bay, and that's where flood questions cluster. Lines on those Baltimore County parcels frequently follow the water, so part of the tract can be mapped as high risk. Small streams and ditches near Towson may not be studied in detail, which is why it is worth walking the ground after a heavy rain.
Flood insurance and building rules in Baltimore County
The zone lists up again when a loan on a house near Baltimore Highlands is underwritten. When a county home sits in a Special Flood Hazard Area and carries a federally backed mortgage, federal rules call for flood insurance; that applies where the local government around Baltimore Highlands is in the National Flood Insurance Program. Outside the A zones around Baltimore Highlands, coverage is optional; pricing a policy for land near Baltimore Highlands is still worth a call. Think the map is wrong about a house in Towson? The owner can ask FEMA for a Letter of Map Amendment (LOMA); a surveyor near Baltimore Highlands can supply the elevation data. Building or filling inside a mapped zone near Towson has to meet local floodplain rules; the county floodplain administrator can say what applies.
Neighboring maps around Baltimore County
Near the edge of the county, check the next map over: Anne Arundel County, Carroll County, Harford County, Howard County, and Kent County all border it. Our Maryland page links each map neighboring Baltimore County.
Quick answers for Baltimore County
My lot in Baltimore Highlands lists Zone AE. What does that mean?
Zone AE on a lot in Baltimore Highlands is a mapped 100-year floodplain with a base flood elevation, so mandatory insurance rules apply to federally backed mortgages.
What is a base flood elevation for a Baltimore County property?
On the map covering Baltimore Highlands, it is the projected water surface in the base flood, and a surveyor compares the building near Baltimore Highlands to it.
How can I check a Baltimore County, MD flood zone?
Look it up at FEMA's Flood Map Service Center, then match the parcel lines in the county parcel viewer; for land near Towson, a zone starting with A or V is high risk.
Can I build in a flood zone in Baltimore County?
Often, but local floodplain rules apply; ask the county or town building office in Baltimore Highlands before you buy.
Does a 100-year floodplain near Towson flood only once a century?
No, ground around Baltimore Highlands mapped that way has a 1-percent chance of flooding every year, not a once-a-century schedule.
Where do I get an elevation certificate in Baltimore County?
A licensed surveyor or engineer prepares it, and the building office serving Baltimore Highlands may already have one on file for newer construction.
Open the official Baltimore County, MD parcel map Baltimore 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.