ZIP Codes of Clay County, TN

Population & People
Population & People
Total Population
5,342
Household Income
Household Income
Median Income
$39,572
Housing
Housing
Total Housing Units
2,664
Business & Economy
Business & Economy
Total Businesses
92
Employment
Employment
Employment Rate
39.68%
Education
Education
Bachelor's Degree+
9.21%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 2 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:2 ZIP Codes (2 Standard, 0 PO Box, 0 Unique) [See All]
Area Code:931
Timezone:Central (GMT -06:00)
Local Time:2:13:45 PM
Population:5,342 [See All]
FIPS:47027
Land Area:146 sq mi
Water Area:10 sq mi
Coordinates:36.5385, -85.5561
Quick Link:
https://www.zip-codes.com/county/tn-clay.asp
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Tennessee's #92 most populous county
5,342 residents across 2 ZIPs — #92 of 95 Tennessee counties.

Standout ZIPs in this County


Most Populous
Celina · 4,477 people
83.8% of county total
Highest Income
Celina · $39,821 median
1.0× county average
Largest Land Area
Celina · 98.0 sq mi
Spans the most ground
Fastest Growth
Celina · 13.5% (10-yr)
3,943 → 4,477 residents
Most Educated
Celina · 8.4% bachelor's+
264 of 3,126 adults 25+

Things worth knowing about Clay County


5,342 residents live across 2 ZIPs covering 146 sq mi, served by 2 distinct USPS-recognized cities.

Population moved from 5,161 to 5,342 from 2014 to 2024 — a +3.5% change. 1 ZIPs gained residents, 1 lost.

The county's wealthiest ZIP 38551 (Celina, $39,821 median) and poorest ZIP 38575 (Moss, $39,323) are 8.4 miles apart — a 1.0× income gap across local geography.

Median home values vary 1.0× across this county — from $115,500 in 38575 (Moss) to $116,700 in 38551 (Celina).

Density varies across the county — from 18 people/sq mi in 38575 (Moss) to 46 in 38551 (Celina).

Educational attainment ranges from 8.4% bachelor's+ in 38551 (Celina) to 12.8% in 38575 (Moss) — the breadth of educational profiles across the area.

Within Tennessee, this is the #92 most populous of 95 counties and ranks #93 for median household income .

Weighted by population, the typical household earns about $39,740 across the county — reflecting what a typical resident sees, not a simple ZIP average.

9.2% of adults age 25+ hold a bachelor's degree or higher (349 of 3,789 reporting).

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

Stories about Clay 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.

Celina

All ZIP Codes in Clay County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
38551CelinaStandard4,477$39,82198.013.5%
38575MossStandard865$39,32348.2-29.0%

Adjacent & Nearby Counties