| ZIP Codes: | 2 ZIP Codes (2 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Codes: | 615 / 629 / 931 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:13:47 PM |
| Population: | 21,840 [See All] |
| FIPS: | 47111 |
| CBSA: | Nashville-Davidson--Murfreesboro--Franklin, TN |
| Land Area: | 253 sq mi |
| Water Area: | 0 sq mi |
| Coordinates: | 36.5309, -85.8942 |
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21,840 residents live across 2 ZIPs covering 253 sq mi, served by 2 distinct USPS-recognized cities.
Population moved from 18,759 to 21,840 from 2014 to 2024 — a +16.4% change. 1 ZIPs gained residents, 1 lost.
The county's wealthiest ZIP 37083 (Lafayette, $61,843 median) and poorest ZIP 37150 (Red Boiling Springs, $33,047) are 10.9 miles apart — a 1.9× income gap across local geography.
Median home values vary 1.3× across this county — from $181,300 in 37150 (Red Boiling Springs) to $239,500 in 37083 (Lafayette).
Density varies 3× across the county — from 42 people/sq mi in 37150 (Red Boiling Springs) to 117 in 37083 (Lafayette).
Educational attainment ranges from 13.7% bachelor's+ in 37150 (Red Boiling Springs) to 14.3% in 37083 (Lafayette) — the breadth of educational profiles across the area.
Within Tennessee, this is the #61 most populous of 95 counties and ranks #87 for median household income with the #9 fastest decade growth .
Weighted by population, the typical household earns about $55,941 across the county — reflecting what a typical resident sees, not a simple ZIP average.
14.2% of adults age 25+ hold a bachelor's degree or higher (2,093 of 14,783 reporting).
2 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.
One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.