ZIP Codes of Erath County, TX

Population & People
Population & People
Total Population
42,434
Household Income
Household Income
Median Income
$78,832
Housing
Housing
Total Housing Units
18,358
Business & Economy
Business & Economy
Total Businesses
1,086
Employment
Employment
Employment Rate
59.70%
Education
Education
Bachelor's Degree+
32.25%
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 (3 Standard, 2 PO Box, 1 Unique) [See All]
Area Code:254
Timezone:Central (GMT -06:00)
Local Time:11:55:14 PM
Population:42,434 [See All]
FIPS:48143
CBSA:Stephenville, TX
Land Area:943 sq mi
Water Area:7 sq mi
Coordinates:32.2587, -98.2265
Quick Link:
https://www.zip-codes.com/county/tx-erath.asp
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Texas's #76 most populous county
42,434 residents across 6 ZIPs — #76 of 254 Texas counties.

Standout ZIPs in this County


Most Populous
Stephenville · 31,375 people
73.9% of county total
Highest Income
Bluff Dale · $117,702 median
1.5× county average
Largest Land Area
Dublin · 411.9 sq mi
Spans the most ground
Fastest Growth
Bluff Dale · 32.0% (10-yr)
1,650 → 2,178 residents
Most Educated
Bluff Dale · 40.8% bachelor's+
687 of 1,685 adults 25+

Things worth knowing about Erath County


42,434 residents live across 6 ZIPs covering 943 sq mi, served by 5 distinct USPS-recognized cities.

Population moved from 38,043 to 42,434 from 2014 to 2024 — a +11.5% change. 2 ZIPs gained residents, 2 lost.

The county's wealthiest ZIP 76433 (Bluff Dale, $117,702 median) and poorest ZIP 76446 (Dublin, $57,583) are 22.4 miles apart — a 2.0× income gap across local geography.

Median home values vary 2.1× across this county — from $185,500 in 76446 (Dublin) to $395,000 in 76433 (Bluff Dale).

Density varies across the county — from 17 people/sq mi in 76433 (Bluff Dale) to 78 in 76401 (Stephenville).

Educational attainment ranges from 23.4% bachelor's+ in 76446 (Dublin) to 40.8% in 76433 (Bluff Dale) — the breadth of educational profiles across the area.

Within Texas, this is the #76 most populous of 254 counties and ranks #61 for median household income with the #56 fastest decade growth .

Hosts 1 single-entity Unique ZIP: 76402Tarleton State Univ .

Weighted by population, the typical household earns about $63,454 across the county — reflecting what a typical resident sees, not a simple ZIP average.

32.2% of adults age 25+ hold a bachelor's degree or higher (8,037 of 24,923 reporting).

3 Standard delivery, 2 PO Box only, 1 single-entity Unique ZIPs serve this county.

Stories about Erath 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
943
square miles
Avg density
45.0
people per sq mi
Population
42,434
across 6 ZIPs
Dublin
411.9 sq mi
8,131 residents
Stephenville
402.6 sq mi
31,375 residents
Bluff Dale
128.6 sq mi
2,178 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.

Stephenville

All ZIP Codes in Erath County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
76401StephenvilleStandard31,375$61,210402.616.1%
76446DublinStandard8,131$57,583411.9-4.5%
76433Bluff DaleStandard2,178$117,702128.632.0%
76402StephenvilleUnique7500.0-12.8%
76461LinglevillePO Box0.0
76465Morgan MillPO Box0.0

Adjacent & Nearby Counties