ZIP code · Flag Pond · Tennessee · United States
ZIP code 37657 — Flag Pond
ZIP code 37657 serves Flag Pond, Tennessee.
- Postal code
- 37657Single source Value from one source, not cross-checked.
- City
- Flag Pond
- County
- Unicoi FIPS 47171
- State
- Tennessee
- Country
- United States
- Coordinates
- 36.0085, -82.5623 — precision precise (locality)
View on OpenStreetMap - Population
- 839 (ZCTA, ACS 5-year)
- Population density
- 23 / sq mi
- Land area
- 36.7 sq mi (95.1 km²) (ZCTA, ACS 5-year)
- Median household income
- $71,581
- Per-capita income
- $28,185
- Median age
- 43.9
- Households
- 337
- Housing units
- 450
- Median home value
- $214,200
- Congressional district
- TN-1 (119th Congress)
- USDA hardiness zone
- 7a (0 to 5 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/New_York (UTC−5 / UTC−4 DST)
- Area code
- 423 (from the nearest rate centre)Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 37657 with another ZIP · ZIPs within 25 miles · distance from 37657
Map of ZIP code 37657
Climate — monthly normals
Warmest month Jul (avg high 85°F), coldest Jan (avg low 25°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 47 | 51 | 59 | 68 | 76 | 83 | 85 | 85 | 80 | 70 | 59 | 50 |
| Avg low °F | 25 | 27 | 33 | 41 | 50 | 58 | 62 | 61 | 55 | 43 | 33 | 28 |
| Precip in | 3.5 | 3.3 | 3.8 | 4.0 | 4.8 | 5.1 | 5.5 | 4.8 | 3.3 | 2.5 | 2.8 | 3.6 |
NOAA 1991–2020 climate normals from the nearest station: ERWIN 1 W (12.0 mi) · NOAA NCEI
Places in ZIP 37657
- 1 schools
- 9 places of worship
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page