Loudon Tennessee ZIP Codes
Loudon holds a single ZIP code.
Every ZIP code in Loudon
| ZIP code | County |
|---|---|
| 37774 | 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Loudon codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Loudon. 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 Loudon 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 Loudon accounts for 2% of it.
Every Tennessee ZIP prefix and the region it covers →
Area codes covering Loudon
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 Loudon occupies.
Loudon Tennessee area codes in full →
Where Loudon's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Loudon
| City | Distance | ZIP codes |
|---|---|---|
| Philadelphia Tennessee ZIP codes | 4.5 mi | 1 ZIP code |
| Lenoir City Tennessee ZIP codes | 7.0 mi | 2 ZIP codes |
| Sweetwater Tennessee ZIP codes | 11 mi | 1 ZIP code |
| Vonore Tennessee ZIP codes | 12 mi | 1 ZIP code |
| Kingston Tennessee ZIP codes | 12 mi | 1 ZIP code |
| Greenback Tennessee ZIP codes | 13 mi | 1 ZIP code |
| Friendsville Tennessee ZIP codes | 13 mi | 1 ZIP code |
| Madisonville Tennessee ZIP codes | 15 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.