| ZIP Codes: | 6 ZIP Codes (6 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Codes: | 615 / 629 / 931 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 11:55:06 PM |
| Population: | 25,817 [See All] |
| FIPS: | 47081 |
| CBSA: | Nashville-Davidson--Murfreesboro--Franklin, TN |
| Land Area: | 541 sq mi |
| Water Area: | 0 sq mi |
| Coordinates: | 35.8369, -87.4383 |
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25,817 residents live across 6 ZIPs covering 541 sq mi, served by 6 distinct USPS-recognized cities.
Population moved from 24,565 to 25,817 from 2014 to 2024 — a +5.1% change. 4 ZIPs gained residents, 2 lost.
The county's wealthiest ZIP 37025 (Bon Aqua, $77,846 median) and poorest ZIP 37137 (Nunnelly, $55,893) are 14.3 miles apart — a 1.4× income gap across local geography.
Median home values vary 1.8× across this county — from $153,800 in 37137 (Nunnelly) to $283,400 in 37025 (Bon Aqua).
Density varies 7× across the county — from 17 people/sq mi in 38454 (Duck River) to 110 in 37025 (Bon Aqua).
Educational attainment ranges from 9.8% bachelor's+ in 37137 (Nunnelly) to 22.0% in 37025 (Bon Aqua) — the breadth of educational profiles across the area.
Within Tennessee, this is the #57 most populous of 95 counties and ranks #33 for median household income with the #47 fastest decade growth .
Weighted by population, the typical household earns about $68,051 across the county — reflecting what a typical resident sees, not a simple ZIP average.
15.3% of adults age 25+ hold a bachelor's degree or higher (2,865 of 18,744 reporting).
6 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.
A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 37033 | Centerville | Standard | 8,249 | $68,284 | 242.8 | 6.4% |
| 37025 | Bon Aqua | Standard | 6,854 | $77,846 | 62.0 | 24.5% |
| 37098 | Lyles | Standard | 6,046 | $63,371 | 57.9 | 19.9% |
| 37137 | Nunnelly | Standard | 2,090 | $55,893 | 94.0 | -41.3% |
| 37140 | Only | Standard | 1,494 | $62,232 | 19.4 | 13.6% |
| 38454 | Duck River | Standard | 1,084 | $61,914 | 64.9 | -22.1% |