County ZIP codes · Tennessee · FIPS 47107
McMinn County, TN ZIP Codes
McMinn County, Tennessee has 12 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 11 residential and 1 for PO boxes or a single organization. 6 of the residential ones lie mainly in McMinn County and 5 mainly in a neighboring county; 8 cross the county line. Median household income ranges from $53,605 in 37874 (Sweetwater) to $71,786 in 37846 (Philadelphia) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of McMinn County?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are its ZIP codes?
The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $55,662 and $63,699.
They carry 11 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 11 residential ZIP codes in McMinn County
6 ZIP codes lie mainly in McMinn County; 5 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 37303 | Athens | 25,688 | 172 | $62k | $232k | 100% |
| 37331 | Etowah | 7,613 | 193 | $56k | $194k | 100% |
| 37329 | Englewood | 6,591 | 111 | $71k | $173k | 85% |
| 37370 | Riceville | 5,414 | 88 | $61k | $222k | 100% |
| 37826 | Niota | 3,449 | 64 | $63k | $214k | 99% |
| 37309 | Calhoun | 2,136 | 54 | $64k | $173k | 89% |
Partly in McMinn County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 37874 | Sweetwater | 16,567 | 161 | $54k | $191k | 21% |
| 37325 | Delano | 2,007 | 93 | $66k | $171k | 12% |
| 37322 | Decatur | 9,101 | 68 | $58k | $171k | 8% |
| 37846 | Philadelphia | 4,579 | 63 | $72k | $202k | 4% |
| 37354 | Madisonville | 17,356 | 148 | $55k | $232k | 3% |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).
Which ZIP codes cross the county line?
8 ZIP codes of McMinn County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In McMinn | Elsewhere |
|---|---|---|
| 37354 | 3% | Monroe County 97% |
| 37874 | 21% | Monroe County 70%; Loudon County 9% |
| 37322 | 8% | Meigs County 92% |
| 37329 | 85% | Monroe County 16% |
| 37846 | 4% | Loudon County 43%; Roane County 39%; Monroe County 15% |
| 37826 | 99% | Meigs County 1% |
| 37309 | 89% | Polk County 12% |
| 37325 | 12% | Polk County 88% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
| ZIP | Postal name |
|---|---|
| 37371 | Athens |
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do McMinn County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. McMinn County's ZIP codes use 2 prefixes: 373 and 378.
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.