| ZIP Codes: | 5 ZIP Codes (5 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Codes: | 615 / 629 / 931 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:13:45 PM |
| Population: | 40,498 [See All] |
| FIPS: | 47021 |
| CBSA: | Nashville-Davidson--Murfreesboro--Franklin, TN |
| Land Area: | 300 sq mi |
| Water Area: | 5 sq mi |
| Coordinates: | 36.2528, -87.0685 |
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40,498 residents live across 5 ZIPs covering 300 sq mi, served by 5 distinct USPS-recognized cities.
Population moved from 38,677 to 40,498 from 2014 to 2024 — a +4.7% change. 4 ZIPs gained residents, 1 lost.
The county's wealthiest ZIP 37146 (Pleasant View, $110,938 median) and poorest ZIP 37015 (Ashland City, $79,092) are 9.6 miles apart — a 1.4× income gap across local geography.
Median home values vary 1.4× across this county — from $299,900 in 37015 (Ashland City) to $418,800 in 37082 (Kingston Springs).
Density varies 2× across the county — from 115 people/sq mi in 37082 (Kingston Springs) to 250 in 37146 (Pleasant View).
Educational attainment ranges from 24.0% bachelor's+ in 37035 (Chapmansboro) to 34.3% in 37146 (Pleasant View) — the breadth of educational profiles across the area.
Within Tennessee, this is the #37 most populous of 95 counties and ranks #2 for median household income .
Weighted by population, the typical household earns about $91,094 across the county — reflecting what a typical resident sees, not a simple ZIP average.
27.6% of adults age 25+ hold a bachelor's degree or higher (7,978 of 28,859 reporting).
5 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.