Blog · October 14, 2026 · Pennsylvania
Using a Lehigh County Plat Book today
For a tract near Emmaus, plat books show ownership by township; the parcel viewer shows it today.
Main page: Lehigh County, PA GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Looking for a Lehigh County plat book? It's a printed atlas of landownership, usually by township, useful for farms near Alburtis. In this Lehigh County guide: what's in a plat book, where to look for printed copies, and how the county viewer fills the gaps.
The Lehigh County plat book: start here
Out toward Coplay, a plat book is a privately published atlas, that map ownership across the countryside, often organized by township.
Pulling up a parcel
Your first stop is the Lehigh County ArcGIS parcel map; it covers each assessed parcel in the county, Breinigsville included. Without an address in hand, follow US Route 222 on the aerial and select the outline, which applies near Allentown as much as anywhere. For a tract near Catasauqua, write down the parcel ID while you have it open; each clerk in the county will want it.
Reading the legal description
Rural deeds near Cetronia commonly use metes-and-bounds descriptions, listing bearings, distances and landmarks. Town lots near Alburtis refer to a recorded plat, making them easier to find. Keep the legal description for land near Cetronia for any title or survey request.
Places you'll see on the map
Allentown holds the county offices, which is where the courthouse records live. You'll also find Bethlehem, Alburtis, Catasauqua, and Coopersburg, each with its own cluster of lots. About 377,754 people call Lehigh County home (Census Bureau estimate, 2023) spread over roughly 345 square miles. The county was organized in 1812, and some chains of title near Cementon are long.
Taking the map into the field
Most viewers work in a phone browser, handy when you're parked on a road near Catasauqua, so load it before you lose signal. A screenshot of the parcel near Coopersburg with its ID helps when you meet an owner or agent.
Where to look for one
Editions come and go depending on publishers, try the county extension office, recorder's office or library near Emmaus.
Between editions
For current names, use the Lehigh County ArcGIS parcel map, including rural land around Emmaus.
Printing your own
Print parcel views near Coopersburg township by township and keep them in a binder for the truck.
What the map can't tell you
For a parcel near Allentown, acreage on the record is an assessed number; only a licensed surveyor can set the real corners on the ground. Around Emmaus, records update in batches, so a deed recorded last month might lag behind.
Why people still buy them
Buyers and seed dealers around Coplay rely on them to see ownership across many tracts at once.
Not the same thing
For a parcel near Breinigsville, don't confuse the atlas with a recorded subdivision plat: the recorded plat at the Recorder of Deeds is a legal document, and the atlas is just a guide.
Neighboring parcel maps
Lehigh County meets Berks County, Bucks County, Carbon County, Montgomery County, and Northampton County, and each of those keeps its own parcel map. Ground near Ancient Oaks that runs to the line can be split across two assessors' files, so check the adjacent map before you assume the acreage. In and around Alburtis, our state page links every neighboring county map for Pennsylvania.
Offices that can help
Questions about value or the owner field for land near Coplay are handled by the county assessment office, which maintains the tax roll. Questions about what you can build around Ancient Oaks need the planning or permitting office, and the answer depends on jurisdiction.
Where the recorded documents are
Out toward Coplay, the map is an index, not the title: deeds, plats and easements for parcels in the county sit with the Recorder of Deeds. Older tracts near Alburtis can trace back through many deeds, and a title company is worth hiring if money is changing hands.
Quick answers
Are old plat books online near Dorneyville?
For land near Cementon, libraries and historical societies hold older editions; call ahead.
Why does the plat book differ from the deed around Coplay?
For property near Cementon, plat book acreage and lines are approximate.
Should I use the Lehigh County ArcGIS parcel map instead?
In most cases, the viewer covers town lots near Dorneyville too; a printed atlas is still handy offline.
Where can I buy a plat book for land near Ancient Oaks?
Usually, editions come and go.
Is the parcel map a survey near Breinigsville?
For land near Catasauqua, parcel lines are tax drawings, not surveys.
Is a plat book the same as a recorded plat around Breinigsville?
On ground around Breinigsville, a survey sets boundaries, not an atlas; use a surveyor for lines.
Open the official Lehigh County, PA 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.