Blog · October 14, 2026 · Wisconsin
Using a Door County Plat Book today
If the land is near Little Sturgeon, plat books show ownership by township; the parcel viewer shows it today.
Main page: Door County, WI GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Looking for a Door County plat book? It's a printed atlas of landownership, usually by township, and it's handy for land around Baileys Harbor. This county guide covers: how the atlas is organized, where to look for printed copies, and how the county viewer fills the gaps, at least around Baileys Harbor.
Tracking down a Door County plat book
Around Sturgeon Bay Shipping Canal, plat books are commercial atlases, showing rural owners and tract lines, page by page across the county.
Getting to the right map
Go first to the Door County parcel viewer; it maps each tax parcel around Baileys Harbor and Ephraim. Closer to Sturgeon Bay Shipping Canal, enter a street address, an owner's name or a parcel number, and the matching parcel lights up. For acreage around Sturgeon Bay Shipping Canal, copy the parcel ID before closing the panel; each office in the county will want it.
Finding a printed edition
Not every county has a current edition, try the county extension office, recorder's office or library near Sister Bay.
Common uses
Buyers and seed dealers around Carnot rely on them for a big-picture view of who owns what.
Using the parcel viewer instead
The Door County parcel viewer is updated more often than any atlas, for tracts near Brussels.
A homemade atlas
Print parcel views near Ellison Bay township by township and keep them in a binder for the truck.
Limits of the parcel data
With a lot near Forestville, listed acreage is an estimate; only a licensed surveyor can set the real lines on the ground. For a home near Mackaysee Lake, owner names and values update on a schedule, so a deed recorded last month can take weeks to appear.
Reading the legal description
Wisconsin uses the Public Land Survey System, which means a tract near Sturgeon Bay Shipping Canal is described by section, township and range. Each section is nominally a mile square, about 640 acres, with 36 sections to a township, though sections near Ellison Bay can be irregular. Copy the legal description from the record for the parcel near Baileys Harbor for any title or survey request.
When a parcel crosses a boundary
Door County meets Benzie County, MI, Delta County, MI, Leelanau County, MI, Menominee County, MI, and Brown County, and each of those keeps its own parcel map. Ground near Carnot that runs to the line may be split in two county records, so look at the adjacent map too. Out toward Mackaysee Lake, the Platbookmapper state page lists every neighboring county map for Wisconsin.
Backing up the map with records
The map is an index, not the title: recorded deeds, subdivision plats and easements for land near Sister Bay are filed with the Register of Deeds. For property near Baileys Harbor, use the book and page shown in the record panel and the lookup takes minutes.
Field tips
Most viewers work in a phone browser, handy when you're parked on a road near Ephraim, so load it before you lose signal. A printout of the tract near Brussels is a good backup.
A quick look at the area
Sturgeon Bay holds the county offices, where most land records are kept. Other places on the map include Egg Harbor, Ephraim, Forestville, and Sister Bay. About 30,562 people live in Door County (Census Bureau estimate, 2023) on about 482 square miles. Door County was organized in 1851, so old deeds can run back a long way. Features like Sturgeon Bay Shipping Canal, Mackaysee Lake, and Newport State Park make handy reference points on the map.
Not the same thing
For acreage around Forestville, a plat book is not a recorded plat: the recorded plat at the Register of Deeds is a legal document, and the atlas is just a guide.
Who handles what
For assessment questions about property around Detroit Harbor belong with the county real property listing office, which maintains the tax roll. Questions about what you can build around Carlsville go to planning, building or health offices, and the answer depends on jurisdiction.
Questions about the Door County plat book
Where can I buy a plat book for land near Sister Bay?
Closer to Newport State Park, editions come and go; online parcel maps fill the gaps.
Should I use the county parcel viewer instead near Brussels?
The viewer covers town lots near Little Sturgeon too; a printed atlas is still handy offline.
Can I use a plat book for a boundary near Sturgeon Bay?
For a parcel near Baileys Harbor, a plat book is a privately published atlas.
How accurate are plat book acreages near Egg Harbor?
If the land is near Forestville, plat book acreage and lines are approximate; they're good for orientation.
Is the parcel map a survey in Door County?
No; boundary questions near Mackaysee Lake need a licensed surveyor.
Open the official Door 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.