Blog · October 14, 2026 · Ohio
The Miami County Plat Book and the online parcel map
For property near Tipp City, plat books show ownership by township; the parcel viewer shows it today.
Main page: Miami County, OH GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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Want a copy of the Miami County plat book? A plat book shows owners and tract lines on township pages, popular with hunters, farmers and buyers near Union. In this Miami County guide: what's in a plat book, where to look for printed copies, and the free online map that stays current.
Tracking down a Miami County plat book
With a lot near Alcony, a plat book is a privately published atlas, showing rural owners and tract lines, page by page across the county.
The viewer Miami County publishes
Parcels around Bloomer are published on the Miami County ArcGIS parcel map, a viewer that needs no account. When a rural tract has no street number, pan along the nearest road until the lines appear, then click inside the one you want, which applies near Bradford as much as anywhere. For property near Piqua, write down the parcel ID from that panel; every office in the county asks for it first.
Where to look for one
Editions come and go depending on publishers, check with local offices and farm stores near Huber Heights.
Which office to call
Anything recorded against property around Casstown sit in the index kept by the County Recorder, often with an online index. Questions about what you can build around Piqua are for the local planning and health departments, town or county, depending on location.
Deeds, plats and who keeps them
When the details count, pull the recorded deed through the County Recorder; the viewer just points to it, and that holds around Huber Heights too. Closer to Huber Heights, have ready the book and page shown in the record panel to skip a name search.
Places you'll see on the map
Troy is the county seat, which is where the courthouse records live. Other places on the map include Huber Heights, Piqua, Tipp City, and Union. Roughly 110,876 people live in the county (Census estimate, 2023) on roughly 407 square miles around Union. Miami County was organized in 1807, which matters when you trace an old farm's title.
Using it on a phone
Most viewers work in a phone browser, which helps when you're standing on land near Tipp City, though signal can drop in rural spots. A screenshot of the parcel near Frederick with its ID helps when you meet an owner or agent.
Legal descriptions in Ohio
Rural deeds near Casstown are often described by metes and bounds, listing bearings, distances and landmarks. Platted lots around Conover refer to a recorded plat, making them easier to find. Copy the legal description from the record for the parcel near Frederick when you talk to a surveyor.
Between editions
For current names, use the Miami County ArcGIS parcel map, across the county.
Common uses
Farmers, hunters and appraisers near Bloomer use plat books to see ownership across many tracts at once.
A word on accuracy
Listed acreage is an estimate; just a licensed surveyor can set the real boundary for a parcel near Tipp City. If you're looking near Piqua, owner names and values update on a schedule, so a deed recorded last month may not show yet.
Neighboring parcel maps
Miami County meets Champaign County, Clark County, Darke County, Montgomery County, and Shelby County, and each of those keeps its own parcel map. Acreage along the edge near Bloomer may be split in two county records, so open the neighboring map too. If you're looking near Huber Heights, our state page lists every bordering county map across Ohio.
A homemade atlas
Print parcel views near Bloomer township by township to build your own up-to-date atlas.
Atlas or legal document
Closer to Union, a plat book is not a recorded plat: the recorded plat at the County Recorder is a legal document, and the atlas is just a guide.
Frequently asked
Where can I buy a plat book for land near Tipp City?
In and around Huber Heights, it depends on whether a publisher has a current edition; online parcel maps fill the gaps.
Are old plat books online near Casstown?
In and around Casstown, some older atlases have been digitized; call ahead.
Is a plat book legal proof around Casstown?
For a tract near Casstown, a plat book is a privately published atlas; check the deed.
Plat book or parcel viewer near Frederick?
Generally, the viewer covers town lots near Union too; many people use both.
What's the tax parcel number used for for land near Union?
Every office uses it to pull the same file for land near Frederick; copy it before you call anyone.
Are plat book lines exact near Union?
If you're looking near Troy, plat book acreage and lines are approximate; they're good for orientation.
Open the official Miami County, OH 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.