Unicoi County, Tennessee ZIP codes
3 ZIP codes are in Unicoi County, plus 3 that cross in from neighboring counties. It's part of the Johnson City, TN metro area.
- ZIP codes
- 3
- Population in these ZIPs
- 18,600
- Avg. median income
- $52,700population-weighted
- Cities & towns
- 3
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Unicoi County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 37650 | Erwin | 12,774 | $50,654 | $222,700 |
| 37657 | Flag Pond | 1,060 | $73,108 | $252,300 |
| 37692 | Unicoi | 4,766 | $53,531 | $291,900 |
ZIP codes partly in Unicoi County
These ZIP codes are mostly in a neighboring county but cover part of Unicoi County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 37601 | Johnson City | Washington County | 38,008 | $50,686 | $262,800 |
| 37643 | Elizabethton | Carter County | 34,120 | $51,831 | $233,200 |
| 37658 | Hampton | Carter County | 3,854 | $37,995 | $208,600 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Unicoi County
Nearby counties
Frequently asked questions
How many ZIP codes are in Unicoi County, Tennessee?
3 ZIP codes are mainly in Unicoi County, and 3 more ZIP codes from neighboring areas reach partly into it.
What cities are in Unicoi County?
ZIP codes in Unicoi County use the city names Erwin, Flag Pond and Unicoi.
What metro area is Unicoi County in?
Unicoi County is part of the Johnson City, TN metropolitan statistical area.