Unicoi County, Tennessee
Unicoi County, Tennessee, has 17,856 residents (July 2025 estimate). Its county seat is Erwin. It uses Eastern Time and covers 186 sq mi (482 km²) of land.
- Resident population, July 2025
- 17,856
- Land area
- 186 sq mi (482 km²)
- County seat or government
- Erwin
- Time zone
- Eastern TimeUTC-05:00 in January; UTC-04:00 in July
- Median household income
- $52,218 ± $6,675
- Median home value
- $189,600 ± $16,867
- Median rent, with utilities
- $750 ± $197
- Homes lived in by their owners
- 72.9% ± 4.2 points
- County type
- County
- Metro or micro area
- Johnson City, TN metro areaOutlying county
- Water area
- 0.32 sq mi (0.83 km²)
- State
- Tennessee
- County code (FIPS)
- 47171
- Coordinates (central point)
- 36.100129, -82.418218
These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.
Time zones in Unicoi County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| Eastern TimeAmerica/New_York | UTC-05:00 in January; UTC-04:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.
ZIP Code areas, largest first
- 3760138,008 people
- 3764334,120 people
- 3765012,774 people
- 376924,766 people
- 376583,854 people
- 376571,060 people
6 ZIP Code areas overlap Unicoi County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.
Official county information
We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
School districts in Unicoi County, largest first
- Unicoi County School District17,756 people
Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.
Cities, towns and communities, largest first
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
- Erwin, Tennessee (town)5,988 people
- Unicoi, Tennessee (town)3,806 people
- Banner Hill, Tennessee (CDP)1,211 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Washington County, Tennessee14 mi north
- Mitchell County, North Carolina15 mi southeast
- Yancey County, North Carolina16 mi southeast
- Carter County, Tennessee21 mi northeast
- Madison County, North Carolina23 mi southwest
- Greene County, Tennessee25 mi west
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