Blog · October 8, 2026 · Maine
Washington County Plat Map (Maine)
The free official plat map for Washington County, how to search it, and what the parcel data does and doesn't tell you about owners, acreage and property lines.
Main page: Washington County, ME GIS & Parcel Viewer (official map link, Washington 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.
From the lots in Machias to the back roads near Baring Plantation, the Washington County plat map shows who owns what and roughly where the lines fall.
Keep reading for the viewer link, how to search it, what the parcel data means, and how deeds and plats back it up in Washington County.
Who needs this map
A lot of different people around Addison rely on this map. Hunters in Washington County use the owner names to line up permission well before the season. Land shoppers looking between Machias and Calais measure road frontage on the map and check whether a tract is landlocked. Rural owners near Baring Plantation use the map to see how many acres the county has on record for them and who owns the land next door. For a house near Baring Plantation, the parcel record confirms acreage and shows whether the driveway appears to cross another tract.
Opening the Washington County plat map
For Washington County, the free parcel map comes from the state. Open Maine GeoLibrary Parcel Viewer and zoom in on the county. The quickest search in Washington County is usually the parcel number from a tax bill; owner and address searches work too. Our Washington County listing carries the same link plus neighboring maps.
What the map covers, from Machias to the back roads
Machias is the county seat, and other towns on the map include Calais, Eastport, Addison, and Alexander. Don't overlook unincorporated places like Baring Plantation, Grand Lake Stream Plantation, and East Central Washington, where rural homesites often come up. Organized in 1789, and named for George Washington, Washington County has a long paper trail, and early deeds may cite landmarks that no longer exist. About 31,555 people lived in Washington County in 2023, according to Census Bureau estimates, on roughly 2,563 square miles. Town lots in Machias give way to farm tracts and woodlots within a mile or two, and the roads toward Addison are lined with small acreage splits. Look for Cross Island National Wildlife Refuge and Moosehorn National Wildlife Refuge on the map; the private tracts touching them are some of the most asked-about parcels in Washington County.
Hunting land and landowner permission in Washington County
Getting on private ground in Washington County is about relationships, and those start with the owner name on the parcel record. Hunters headed to Cross Island National Wildlife Refuge and Moosehorn National Wildlife Refuge should check where the public boundary ends; the tracts beyond it are private. Before hunting around Baileyville, read the Maine Department of Inland Fisheries and Wildlife's current season rules. A landowner near Baring Plantation is more likely to say yes to a hunter who names the exact parcel and offers a phone number.
Property lines in Washington County, Maine
On rural tracts near Baring Plantation, the parcel lines can drift from the fences on the ground, sometimes by more than a few feet. Expect irregular shapes around Machias. Maine deeds trace boundaries by bearing and distance, often from one old marker to the next. Planning a fence or shed on a lot in Machias? Have a Maine licensed surveyor mark the corners first.
The Washington County economy in brief
Of the 851 establishments the Census Bureau counted in Washington County for 2022, the biggest groups were retail trade, health care and social assistance, and construction. Relative to the U.S. as a whole, Washington County is heavy on fishing, hunting and trapping, forestry and logging, and museums, historical sites and parks. Timber is part of the land story around Calais, so a wooded parcel's value can hinge on when it was last cut. If you're comparing land near Baileyville with land near Beals, the local job base is part of the price story.
Where Washington County deeds and plats are kept
For land near Eastport, the parcel record is the index; the recorded deed is the source. Check the county government website to see which office records deeds for land near Baring Plantation. Rural tracts near Baring Plantation may go back through several deeds; the instrument number on the record is the first link in that chain.
Neighboring counties
If your land is near the edge, check the next county over too: Aroostook County, Hancock County, and Penobscot County border Washington County. All of them are listed on our Maine page.
Frequently asked questions
Can hunters use the Washington County, Maine parcel map to find landowners?
The map tells you who owns the woods near Baring Plantation; the owner decides whether you can hunt there.
How do I find property lines in Washington County?
On rural land near Baring Plantation, the parcel map gives a rough outline, the deed gives the calls, and a Maine surveyor finds the corners.
How do I look up a property owner in Washington County?
Search by address if the lot near Machias has one; otherwise click the tract on the map to see the owner of record.
Can I check flood zones on the Washington County map?
Zoning for land near Calais comes from the local planning office; flood zones are on FEMA's map service if the viewer lacks them.
Open the official Washington County, ME parcel map Washington 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.