| ZIP Codes: | 8 ZIP Codes (4 Standard, 4 PO Box, 0 Unique) [See All] |
| Area Codes: | 615 / 629 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:13:50 PM |
| Population: | 152,210 [See All] |
| FIPS: | 47189 |
| CBSA: | Nashville-Davidson--Murfreesboro--Franklin, TN |
| Land Area: | 565 sq mi |
| Water Area: | 13 sq mi |
| Coordinates: | 36.1366, -86.3277 |
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152,210 residents live across 8 ZIPs covering 565 sq mi, served by 5 distinct USPS-recognized cities.
Population moved from 112,057 to 152,210 from 2014 to 2024 — a +35.8% change. 4 ZIPs gained residents, 0 lost.
The county's wealthiest ZIP 37122 (Mount Juliet, $112,967 median) and poorest ZIP 37087 (Lebanon, $82,143) are 14.4 miles apart — a 1.4× income gap across local geography.
Median home values vary 1.4× across this county — from $346,900 in 37184 (Watertown) to $486,500 in 37122 (Mount Juliet).
Density varies 9× across the county — from 66 people/sq mi in 37184 (Watertown) to 585 in 37122 (Mount Juliet).
Most of the decade's growth concentrated around Lebanon — top growth ZIPs averaged +38.2% over the past ten years ( 37090 , 37122 and 37087 ).
Educational attainment ranges from 26.2% bachelor's+ in 37184 (Watertown) to 47.5% in 37122 (Mount Juliet) — the breadth of educational profiles across the area.
Within Tennessee, this is the #10 most populous of 95 counties and ranks #3 for median household income with the #3 fastest decade growth .
On the national stage, Wilson County is and #38 for decade growth .
Weighted by population, the typical household earns about $96,340 across the county — reflecting what a typical resident sees, not a simple ZIP average.
38.2% of adults age 25+ hold a bachelor's degree or higher (40,107 of 104,914 reporting). The most-educated ZIPs cluster around Lebanon.
4 Standard delivery, 4 PO Box only, 0 single-entity Unique ZIPs serve this county.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 37122 | Mount Juliet | Standard | 68,492 | $112,967 | 117.2 | 38.5% |
| 37087 | Lebanon | Standard | 56,655 | $82,143 | 171.8 | 32.3% |
| 37090 | Lebanon | Standard | 19,774 | $84,299 | 165.7 | 43.7% |
| 37184 | Watertown | Standard | 7,289 | $83,125 | 110.5 | 21.0% |
| 37071 | Gladeville | PO Box | — | — | 0.0 | — |
| 37088 | Lebanon | PO Box | — | — | 0.0 | — |
| 37136 | Norene | PO Box | — | — | 0.0 | — |
| 37121 | Mount Juliet | PO Box | — | — | 0.0 | — |