ZIP Codes of Clay County, TX

Population & People
Population & People
Total Population
7,094
Household Income
Household Income
Median Income
$71,930
Housing
Housing
Total Housing Units
3,654
Business & Economy
Business & Economy
Total Businesses
120
Employment
Employment
Employment Rate
56.94%
Education
Education
Bachelor's Degree+
22.19%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 5 ZIPs in this county.
Data Last Updated: July 1, 2026
ZIP Codes:5 ZIP Codes (4 Standard, 1 PO Box, 0 Unique) [See All]
Area Code:940
Timezone:Central (GMT -06:00)
Local Time:11:55:12 PM
Population:7,094 [See All]
FIPS:48077
CBSA:Wichita Falls, TX
Land Area:811 sq mi
Water Area:26 sq mi
Coordinates:33.8266, -98.1880
Quick Link:
https://www.zip-codes.com/county/tx-clay.asp
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Texas's #184 most populous county
7,094 residents across 5 ZIPs — #184 of 254 Texas counties.

Standout ZIPs in this County


Most Populous
Henrietta · 4,842 people
68.3% of county total
Highest Income
Henrietta · $78,484 median
1.1× county average
Largest Land Area
Henrietta · 536.5 sq mi
Spans the most ground
Fastest Growth
Bellevue · 15.0% (10-yr)
1,098 → 1,263 residents
Most Educated
Henrietta · 24.8% bachelor's+
876 of 3,533 adults 25+

Things worth knowing about Clay County


7,094 residents live across 5 ZIPs covering 811 sq mi, served by 5 distinct USPS-recognized cities.

Population moved from 7,185 to 7,094 from 2014 to 2024 — a -1.3% change. 2 ZIPs gained residents, 2 lost.

The county's wealthiest ZIP 76365 (Henrietta, $78,484 median) and poorest ZIP 76377 (Petrolia, $65,667) are 21.7 miles apart — a 1.2× income gap across local geography.

Median home values vary 1.7× across this county — from $98,000 in 76377 (Petrolia) to $171,200 in 76228 (Bellevue).

Density varies across the county — from 7 people/sq mi in 76228 (Bellevue) to 17 in 76377 (Petrolia).

Educational attainment ranges from 10.0% bachelor's+ in 76377 (Petrolia) to 24.8% in 76365 (Henrietta) — the breadth of educational profiles across the area.

Within Texas, this is the #184 most populous of 254 counties and ranks #89 for median household income .

Weighted by population, the typical household earns about $75,693 across the county — reflecting what a typical resident sees, not a simple ZIP average.

22.2% of adults age 25+ hold a bachelor's degree or higher (1,146 of 5,164 reporting).

4 Standard delivery, 1 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Clay County


Big & sparse

A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.

Total area
811
square miles
Avg density
8.7
people per sq mi
Population
7,094
across 5 ZIPs
Henrietta
536.5 sq mi
4,842 residents
Bellevue
175.7 sq mi
1,263 residents
Byers
72.4 sq mi
525 residents

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.

Henrietta

All ZIP Codes in Clay County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
76365HenriettaStandard4,842$78,484536.53.7%
76228BellevueStandard1,263$69,250175.715.0%
76357ByersStandard525$74,31872.4-11.0%
76377PetroliaStandard464$65,66726.8-43.9%
76352BluegrovePO Box0.0

Adjacent & Nearby Counties