Greenback Tennessee ZIP Codes
Greenback holds a single ZIP code.
Every ZIP code in Greenback
| ZIP code | County |
|---|---|
| 37742 | Loudon County |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Greenback codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Greenback. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.
How these codes cluster
Every Greenback ZIP code begins 377. Those first three digits identify the sectional center facility that processes mail for this part of Tennessee. Statewide that range covers 53 ZIP codes, so Greenback accounts for 2% of it.
Every Tennessee ZIP prefix and the region it covers →
Area codes covering Greenback
ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The code below serves the same ground Greenback occupies.
Greenback Tennessee area codes in full →
Where Greenback's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Greenback
| City | Distance | ZIP codes |
|---|---|---|
| Vonore Tennessee ZIP codes | 5.1 mi | 1 ZIP code |
| Friendsville Tennessee ZIP codes | 7.8 mi | 1 ZIP code |
| Loudon Tennessee ZIP codes | 13 mi | 1 ZIP code |
| Maryville Tennessee ZIP codes | 13 mi | 4 ZIP codes |
| Philadelphia Tennessee ZIP codes | 13 mi | 1 ZIP code |
| Lenoir City Tennessee ZIP codes | 13 mi | 2 ZIP codes |
| Louisville Tennessee ZIP codes | 14 mi | 1 ZIP code |
| Madisonville Tennessee ZIP codes | 14 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.