County ZIP codes · Tennessee · FIPS 47189
Wilson County, TN ZIP Codes
Wilson County, Tennessee has 15 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 11 residential and 4 for PO boxes or a single organization. 5 of the residential ones lie mainly in Wilson County and 6 mainly in a neighboring county; 11 cross the county line. Median household income ranges from $49,265 in 37012 (Alexandria) to $119,405 in 37085 (Lascassas) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Wilson 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 $74,663 and $85,149.
They carry 10 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 11 residential ZIP codes in Wilson County
5 ZIP codes lie mainly in Wilson County; 6 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 37122 | Mount Juliet | 68,492 | 614 | $113k | $487k | 91% |
| 37087 | Lebanon | 56,655 | 344 | $82k | $386k | 87% |
| 37090 | Lebanon | 19,774 | 119 | $84k | $396k | 96% |
| 37184 | Watertown | 7,289 | 66 | $83k | $347k | 97% |
| 37016 | Auburntown | 900 | 27 | $65k | $219k | 59% |
Partly in Wilson County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 37138 | Old Hickory | 22,575 | 1,259 | $85k | $363k | 30% |
| 37085 | Lascassas | 5,853 | 107 | $119k | $425k | 27% |
| 37118 | Milton | 1,094 | 33 | $75k | $478k | 23% |
| 37012 | Alexandria | 2,118 | 57 | $49k | $238k | 22% |
| 37076 | Hermitage | 39,017 | 1,403 | $75k | $384k | 8% |
| 37095 | Liberty | 1,697 | 22 | $65k | $189k | 2% |
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?
11 ZIP codes of Wilson County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Wilson | Elsewhere |
|---|---|---|
| 37122 | 91% | Rutherford County 8% |
| 37087 | 87% | Smith County 7%; Trousdale County 6% |
| 37076 | 8% | Davidson County 92% |
| 37138 | 30% | Davidson County 70% |
| 37090 | 96% | Smith County 3% |
| 37184 | 97% | Smith County 3% |
| 37085 | 27% | Rutherford County 73% |
| 37012 | 22% | DeKalb County 58%; Smith County 20% |
| 37095 | 2% | DeKalb County 76%; Cannon County 22% |
| 37118 | 23% | Rutherford County 69%; Cannon County 8% |
| 37016 | 59% | Cannon County 41% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Wilson County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Wilson County's ZIP codes use 2 prefixes: 370 and 371.
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.