Blog · October 8, 2026 · Wisconsin
Plat Book of Ozaukee County, Wisconsin
The free official plat book for Ozaukee County, how to search it, and what the parcel data does and doesn't tell you about owners, acreage and property lines.
Main page: Ozaukee County, WI GIS & Parcel Viewer (official map link, Ozaukee County facts and neighboring maps).
Platbookmapper is an Amazon Associate. If you buy through an Amazon link on this page, we earn a commission. The link is a product, not the county map.
Land questions in Ozaukee County start in the same place: the official parcel map. Here's how to use the Ozaukee County plat book to find owners, acreage and boundary lines, and where it falls short.
Below are the official links, a quick tour of Ozaukee County's towns and land, and the steps for turning a parcel click into a reliable answer.
Getting into the Ozaukee County parcel viewer
Ozaukee County's public parcel map is the Ozaukee County parcel viewer. Try the search box with a Fredonia street address first; for open land near Druecker, it's faster to pan and click. We track the link on our Ozaukee County directory page, so check there if it stops loading.
Where to find an Ozaukee County plat book in Wisconsin
A plat book is the paper cousin of the online parcel map: a township-by-township atlas with owner names, handy in a truck near Belgium. Treat a printed edition as a handy field reference near Fredonia and the online map as the current record. If a printed book and the online map disagree about a tract near Fredonia, the recorded deed decides.
Property lines in Ozaukee County, Wisconsin
An Ozaukee County plat book is built for assessment, not construction. In Ozaukee County, as in most places, the lines are a best fit of old deed calls onto modern aerial photos. Legal descriptions in Wisconsin usually lean on the section grid, so learning to read 'NE 1/4 of Section 12' pays off quickly around Port Washington. For a fence, an addition or a dispute in Ozaukee County, budget for a licensed survey; it's the answer a court or a lender will accept.
The lay of the land in Ozaukee County
Most of the platted lots cluster in and around Port Washington (the county seat) and Cedarburg, Mequon, Bayside, and Belgium. Crossroads communities such as Waubeka, Dacada, and Decker have their own small clusters of lots. For scale: roughly 233 square miles of land and an estimated 93,460 residents as of 2023, per the Census Bureau. Development is heavy around Port Washington, so lot-by-lot subdivision plats dominate the map near the population centers. Waterfront and bottomland parcels near Lake Michigan deserve a second look at the flood layer. Lion's Den Gorge Nature Preserve is a big draw, and the private tracts that border public land are often the first ones hunters and cabin buyers ask about.
Private and public hunting ground in Ozaukee County
Near Mequon, a single field edge can separate two owners with very different answers about access; the map tells you which is which. Public options include Lion's Den Gorge Nature Preserve; check the boundaries carefully, because private inholdings and neighboring tracts aren't open to the public. Check the Wisconsin Department of Natural Resources for public hunting areas and current regulations before you hunt near Belgium. Ask owners near Mequon early, ask politely, and send a thank-you after the season.
Where Ozaukee County deeds and plats are kept
The paper trail for a tract near Fredonia lives with the Register of Deeds; the map itself is an assessment product. The Ozaukee County Register of Deeds records and indexes real estate documents under Wis. Stat. 59.43. The parcel record often lists a deed book and page or an instrument number, which is how you request a copy of the recorded deed for a tract near Belgium.
Finding vacant land and acreage in Ozaukee County
A vacant-land search near Belgium, step by step:
- With imagery on, zoom to the edge of Bayside where subdivisions give way to open ground.
- For each tract near Belgium, note the parcel ID, the owner and where the tax bill is mailed.
- Confirm legal access. In Ozaukee County, as anywhere, a parcel with no road frontage depends on an easement.
- Assessed values lag the market, but comparing tracts near Druecker still shows which ones the county rates higher.
- Ask the local offices serving Bayside about building permits and septic rules before you buy.
Who needs this map
A lot of different people around Fredonia rely on this map. For a new build outside Bayside, the parcel record supplies the lot size and legal description a site plan needs. House hunters looking at Bayside use the parcel record as a free check on the listing: lot size, legal description and last recorded sale. First-time land buyers near Druecker use the map to find unbuilt tracts and contact owners directly.
Two things the map won't tell you
Splits and sales near Druecker can take weeks or months to show up on the parcel layer. Acreage on the Ozaukee County map is a tax figure; a survey is what a lender or buyer should rely on.
Work and land use in Ozaukee County
Census business counts for 2022 list 2,828 establishments in Ozaukee County; health care and social assistance tops the list, with professional and technical services and retail trade close behind. The local economy leans harder than average on primary metal manufacturing, electrical equipment manufacturing, and machinery manufacturing. Plant workers who want room outside town, near Bayside for example, are part of the market for small acreage and house lots.
Quick answers
Where can I get an Ozaukee County plat book?
Whether a current printed edition exists for Ozaukee County varies; the free online map covering Port Washington and the rest of the county is the dependable option.
Why does the Ozaukee County map show the old owner?
A sale in Bayside has to be recorded and then processed for taxes before the map changes, which takes time.
What's the best way to locate a boundary in Ozaukee County?
For a lot in Bayside, start with the parcel map, then get the recorded plat; a surveyor sets the exact corners.
Can I find the owner of a vacant lot in Ozaukee County?
Look up the address in Bayside, or click the tract. Owner names on the Ozaukee County map come from recorded deeds.
Open the official Ozaukee County, WI parcel map Ozaukee 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.