Blog · October 13, 2026 · Tennessee
Union County GIS Map: Parcels, Owners and Property Lines
The free official GIS map for Union County, how to search it, and what the parcel data does and doesn't tell you about owners, acreage and property lines.
Main page: Union County, TN GIS & Parcel Viewer (official map link, Union County facts and neighboring maps).
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Ground near Big Ridge State Park or a house lot in Maynardville: either way, the Union County GIS map is the free starting point for owner names, acreage and lines.
We'll cover the official map, the communities and terrain around Maynardville, how property lines work in Tennessee, and where the deeds come from.
Who needs this map
A lot of different people around Luttrell rely on this map.
- Before an offer, buyers in Union County pull the parcel to confirm the lot dimensions and look for anything odd, like a flag lot or a shared drive.
- Site planners working in Maynardville grab the parcel ID and legal description first, then order a survey for the real dimensions.
- Anyone hunting for a buildable lot near Maynardville can spot unbuilt parcels on the aerial layer and look up who owns them.
Where to find the official Union County GIS map
Open the statewide Tennessee Property Viewer and zoom toward Luttrell; Union County's parcels are part of that layer. After choosing Union County, try an address in Luttrell to see how the map, group and parcel number appear. Our Union County listing carries the same link plus neighboring maps.
Getting oriented in Union County
Most of the platted lots cluster in and around Maynardville (the county seat) and Luttrell and Plainview. Organized in 1856, Union County has a long paper trail, and early deeds may cite landmarks that no longer exist. The county's land area is about 224 square miles, and the Census Bureau estimated 20,741 residents there in 2023. That density means a real mix on the map: platted neighborhoods near Maynardville, and larger tracts on the rural roads. On the parcel layer, Big Ridge State Park shows up as public ground, and the private tracts along its edges are worth checking line by line.
Property lines in Union County, Tennessee
On rural tracts near Sharps Chapel, the parcel lines can drift from the fences on the ground, sometimes by more than a few feet. Out toward Sharps Chapel, boundaries follow bearings and old landmarks rather than a grid, and the parcel layer shows it. For rural ground near Sharps Chapel, a recorded survey or a new one is the only reliable source for the true line.
Work and land use in Union County
Union County had 222 business establishments in 2022 (County Business Patterns), led by retail trade, construction, and other services. That context helps when you read the parcel pattern around Plainview: jobs and land use move together.
Where Union County deeds and plats are kept
Every line on the Union County map traces back to a recorded deed or plat, and the county's recording office keeps those documents. Names differ across states, so confirm on the official Union County site which office records deeds and plats. Easements and rights-of-way are usually in recorded documents, not on the parcel map, so read the deed itself for a tract near Sharps Chapel.
A note on timing and acreage
Splits and sales near Sharps Chapel can take weeks or months to show up on the parcel layer. For a rural tract near Sharps Chapel, get acreage from a survey, not the tax record, if it matters for a deal.
Near the county line
If your land is near the edge, check the next county over too: Anderson County, Campbell County, Claiborne County, Grainger County, and Knox County border Union County. The Tennessee county list links every neighboring map from Union County.
Frequently asked questions
Is there a printed plat book for Union County?
Whether a current printed edition exists for Union County varies; the free online map covering Maynardville and the rest of the county is the dependable option.
Can I check flood zones on the Union County map?
Zoning for land near Plainview comes from the local planning office; flood zones are on FEMA's map service if the viewer lacks them.
How do I look up a property owner in Union County, TN?
For land near Maynardville with no street address, pan to it on the map and click it; the record names the owner.
Is the Union County parcel map free?
Anyone can browse the Union County parcels at no charge, from lots in Plainview to rural tracts near Sharps Chapel.
What is the county seat of Union County?
The county seat is Maynardville.
Where do property lines run on a Union County, TN lot?
Pull up the tract on the Union County map, copy its legal description, and compare it with the deed. Exact corners take a surveyor.
Open the official Union County, TN parcel map Union 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.