Tennessee · FIPS 47171 · County seat: Erwin
Unicoi County, TN GIS & Parcel Viewer
Parcel lookups for Unicoi County start at Tennessee Property Viewer (TN Comptroller). This page gives you that official link, notes on how the viewer works, and links to the counties next door.
Open the Unicoi County statewide map ↗
Opens tnmap.tn.gov in a new tab. We link out and never embed or copy parcel data.
Quick facts
| Official map | Tennessee Property Viewer (TN Comptroller) |
|---|---|
| Type | Statewide map (covers all of Tennessee) |
| Website | tnmap.tn.gov |
| Access | Free, no login (checked Oct 2026) |
| County seat | Erwin |
| Population | 17,756 (2023 Census Bureau estimate) |
| Land area | 186 sq mi |
| FIPS code | 47171 |
About the official source
This is a statewide map, not a county site. Tennessee Property Viewer (TN Comptroller) covers parcels across Tennessee, and Unicoi County is one part of it. Because a state agency compiles this layer from local data, check with the Unicoi County assessor or recorder before relying on a recent change. Our October 2026 check found the map open to the public, with no account or payment needed.
How to use the Unicoi County viewer
- Press the button to load the statewide viewer, then move the map to Unicoi County.
- Use the viewer's search tool to find an address or parcel, if it has one.
- Click a lot to read its details.
- For deeds, taxes or official copies, take the parcel number to the county's own offices.
Rural addresses don't always geocode well. When that happens, zoom in by hand and click the parcel, or search by owner name.
Unicoi County by the numbers
Census Bureau figures put Unicoi County at about 17,756 people (2023 estimate) on roughly 186 square miles of land, which is about 95 residents per square mile. Among Tennessee's 95 counties, it is the 72nd largest by population. Its county seat is Erwin.
Neighboring counties
Unicoi County shares a border with the counties below. Each link has its own official map:
Maps vs. surveys
Online parcel lines are drawn for tax and planning use. They can be off by several feet, so use a recorded plat or a licensed surveyor for fences, setbacks or a sale.