ZIP Codes of Carter County, TN

Population & People
Population & People
Total Population
44,787
Household Income
Household Income
Median Income
$55,248
Housing
Housing
Total Housing Units
21,660
Business & Economy
Business & Economy
Total Businesses
674
Employment
Employment
Employment Rate
48.53%
Education
Education
Bachelor's Degree+
19.50%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 6 ZIPs in this county.
Data Last Updated: July 1, 2026
ZIP Codes:6 ZIP Codes (4 Standard, 2 PO Box, 0 Unique) [See All]
Area Code:423
Timezone:Eastern (GMT -05:00)
Local Time:11:55:04 PM
Population:44,787 [See All]
FIPS:47019
CBSA:Johnson City, TN
Land Area:287 sq mi
Water Area:3 sq mi
Coordinates:36.3064, -82.2064
Quick Link:
https://www.zip-codes.com/county/tn-carter.asp
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Tennessee's #35 most populous county
44,787 residents across 6 ZIPs — #35 of 95 Tennessee counties.

Standout ZIPs in this County


Most Populous
Elizabethton · 34,120 people
76.2% of county total
Highest Income
Watauga · $81,250 median
1.5× county average
Largest Land Area
Elizabethton · 132.0 sq mi
Spans the most ground
Fastest Growth
Elizabethton · -0.9% (10-yr)
34,438 → 34,120 residents
Most Educated
Watauga · 24.9% bachelor's+
339 of 1,361 adults 25+

Things worth knowing about Carter County


44,787 residents live across 6 ZIPs covering 287 sq mi, served by 5 distinct USPS-recognized cities.

Population moved from 46,233 to 44,787 from 2014 to 2024 — a -3.1% change. 0 ZIPs gained residents, 5 lost.

The county's wealthiest ZIP 37694 (Watauga, $81,250 median) and poorest ZIP 37658 (Hampton, $37,995) are 10.4 miles apart — a 2.1× income gap across local geography.

Median home values vary 1.8× across this county — from $110,800 in 37658 (Hampton) to $203,300 in 37694 (Watauga).

Density varies 5702× across the county — from 47 people/sq mi in 37687 (Roan Mountain) to 268,636 in 37682 (Milligan).

Educational attainment ranges from 13.5% bachelor's+ in 37658 (Hampton) to 24.9% in 37694 (Watauga) — the breadth of educational profiles across the area.

Within Tennessee, this is the #35 most populous of 95 counties and ranks #63 for median household income .

Weighted by population, the typical household earns about $51,580 across the county — reflecting what a typical resident sees, not a simple ZIP average.

19.5% of adults age 25+ hold a bachelor's degree or higher (6,459 of 33,130 reporting).

4 Standard delivery, 2 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Carter County


Single-ZIP anchor

One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.

Elizabethton

All ZIP Codes in Carter County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
37643ElizabethtonStandard34,120$51,831132.0-0.9%
37687Roan MountainStandard4,493$49,91495.4-13.5%
37658HamptonStandard3,854$37,99546.9-8.4%
37694WataugaStandard1,729$81,25012.8-2.8%
37682MilliganPO Box5910.0-3.9%
37644ElizabethtonPO Box0.0

Adjacent & Nearby Counties