| ZIP Codes: | 6 ZIP Codes (5 Standard, 1 PO Box, 0 Unique) [See All] |
| Area Code: | 423 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:13:49 PM |
| Population: | 20,848 [See All] |
| FIPS: | 47151 |
| Land Area: | 472 sq mi |
| Water Area: | 1 sq mi |
| Coordinates: | 36.4052, -84.5069 |
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20,848 residents live across 6 ZIPs covering 472 sq mi, served by 6 distinct USPS-recognized cities.
Population moved from 20,981 to 20,848 from 2014 to 2024 — a -0.6% change. 3 ZIPs gained residents, 3 lost.
The county's wealthiest ZIP 37841 (Oneida, $50,998 median) and poorest ZIP 37756 (Huntsville, $35,025) are 16.8 miles apart — a 1.5× income gap across local geography.
Median home values vary 1.5× across this county — from $107,600 in 37756 (Huntsville) to $159,000 in 37755 (Helenwood).
Density varies 4× across the county — from 23 people/sq mi in 37756 (Huntsville) to 95 in 37755 (Helenwood).
Educational attainment ranges from 8.6% bachelor's+ in 37852 (Robbins) to 14.6% in 37841 (Oneida) — the breadth of educational profiles across the area.
Within Tennessee, this is the #63 most populous of 95 counties and ranks #92 for median household income .
Weighted by population, the typical household earns about $45,485 across the county — reflecting what a typical resident sees, not a simple ZIP average.
12.5% of adults age 25+ hold a bachelor's degree or higher (1,786 of 14,256 reporting).
5 Standard delivery, 1 PO Box only, 0 single-entity Unique ZIPs serve this county.