Blog · October 14, 2026 · Alaska
The Petersburg Borough Plat Book and the online parcel map
If you're looking near Hobart Bay, plat books show ownership by township; the parcel viewer shows it today.
Main page: Petersburg Borough, AK GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Want a copy of the Petersburg Borough plat book? These atlases map who owns rural land, page by page, useful for farms near Hobart Bay. This Petersburg Borough guide covers: what's in a plat book, where to find editions, and the free online map that stays current.
Getting started with the Petersburg Borough plat book
For acreage around Kupreanof, plat books are commercial atlases, showing rural owners and tract lines, page by page across the borough.
Getting to the right map
Begin with the Alaska Statewide Parcels layer in ArcGIS Map Viewer; it covers each tax parcel around Kupreanof and Hobart Bay. When a rural tract has no street number, pan along the nearest road and click the parcel itself, whether the land is near Kupreanof or elsewhere in the borough. On ground around Hobart Bay, write down the parcel ID before closing the panel; every office in the borough will want it.
Before you lean on the lines
The acreage figure is an estimate; just a licensed surveyor establishes the real corners on land around Hobart Bay. For land near Hobart Bay, records update in batches, so a deed recorded last month might lag behind.
Backing up the map with records
The map is an index, not the title: deeds, subdivision plats and easements covering ground around Hobart Bay sit with the State Recorder's Office (Alaska DNR). Closer to Hobart Bay, older tracts in the borough can trace back through a long string of deeds, so a title company is worth hiring on a real sale.
Editions and availability
Not every borough has a current edition, check with local offices and farm stores near Kupreanof.
How land is described here
Alaska is laid out under the Public Land Survey System, so rural legal descriptions near Kupreanof cite section, township and range. A standard section is about one square mile, roughly 640 acres, with 36 sections to a township, though real sections near Hobart Bay vary in size. Write down the legal description for the tract near Kupreanof when you talk to a surveyor.
Taking the map into the field
Most viewers work in a phone browser, handy when you're parked on a road near Kupreanof, so load it before you lose signal. A screenshot of the parcel near Kupreanof with its ID keeps working without signal.
Land on the borough line
Petersburg Borough borders Hoonah-Angoon Census Area, Juneau City and Borough, Prince of Wales-Hyder Census Area, Sitka City and Borough, and Wrangell City and Borough, all with their own assessor records. Acreage along the edge near Kupreanof may show up in two borough records, so check the neighboring map as well. For land near Hobart Bay, the Platbookmapper state page lists every neighboring borough map for Alaska.
Who uses plat books
Buyers and seed dealers around Kupreanof rely on them to see ownership across many tracts at once.
Between editions
Between printed editions, the Alaska Statewide Parcels layer in ArcGIS Map Viewer shows current owners, for tracts near Hobart Bay.
Two kinds of plat
Don't confuse the atlas with a recorded subdivision plat: recorded plats near Hobart Bay are filed with the State Recorder's Office (Alaska DNR), and the atlas is just a guide.
Getting answers from the right desk
If the acreage or value on a parcel near Hobart Bay looks off belong with the borough assessor, the office behind the parcel record. Zoning, permits and septic questions near Hobart Bay go to planning, building or health offices, town or borough, depending on location.
Printing your own
Screenshot each section of the viewer around Hobart Bay and keep them in a binder for the truck.
Getting your bearings
Petersburg holds the county offices, where most land records are kept. You'll also find Kupreanof and Hobart Bay, where town lots give way to larger tracts. About 3,427 people call Petersburg Borough home (Census estimate, 2023) spread over about 2,901 square miles. Petersburg Borough dates to 2013, which matters when you trace an old farm's title.
Frequently asked
Is there a current Petersburg Borough plat book?
For a parcel near Hobart Bay, it depends on whether a publisher has a current edition.
Are plat book lines exact near Hobart Bay?
For a tract near Hobart Bay, the deed and a survey decide.
Can I use a plat book for a boundary near Hobart Bay?
For a home near Kupreanof, recorded plats are legal documents at the State Recorder's Office (Alaska DNR), and plat books are references; check the deed.
How do I research old landowners for land near Kupreanof?
It depends, but state archives near Kupreanof may have copies; availability varies.
Why do offices ask for the parcel ID in Petersburg Borough?
It's the number the borough assessor uses to track a tract near Kupreanof; copy it before you call anyone.
Open the official Petersburg Borough, AK 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.