ZIP Codes of Gaines County, TX

Population & People
Population & People
Total Population
41,557
Household Income
Household Income
Median Income
$63,270
Housing
Housing
Total Housing Units
16,720
Business & Economy
Business & Economy
Total Businesses
1,606
Employment
Employment
Employment Rate
58.96%
Education
Education
Bachelor's Degree+
16.25%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 1 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:3 ZIP Codes (3 Standard, 0 PO Box, 0 Unique) [See All]
Area Codes:432 / 575 / 806
Timezone:Mountain (GMT -07:00)
Local Time:2:13:55 PM
Population:41,557 [See All]
FIPS:48165
CBSA:Hobbs, NM
Land Area:1,511 sq mi
Water Area:1 sq mi
Coordinates:32.6320, -103.6451
Quick Link:
https://www.zip-codes.com/county/tx-gaines.asp
Need Gaines data in your app? Look up ZIP, county, and city data with a single API call.
Try Free
Texas's most foreign-born county
18.9% of residents are foreign-born.
Texas's youngest county
Median age 31.2.
Among Texas's 5 fastest-growing counties
#5 statewide, up 10.4% from 2014 to 2024.

Standout ZIPs in this County


Most Populous
Seminole · 17,342 people
83.0% of county total
Highest Income
Seminole · $79,467 median
1.2× county average
Largest Land Area
Seminole · 1,058.8 sq mi
Spans the most ground
Fastest Growth
Seminole · 19.8% (10-yr)
14,479 → 17,342 residents
Most Educated
Seagraves · 19.3% bachelor's+
356 of 1,844 adults 25+

Things worth knowing about Gaines County


20,885 residents live across 3 ZIPs covering 1,511 sq mi, served by 3 distinct USPS-recognized cities.

Population moved from 17,807 to 20,885 from 2014 to 2024 — a +17.3% change. 2 ZIPs gained residents, 1 lost.

The county's wealthiest ZIP 79360 (Seminole, $79,467 median) and poorest ZIP 79359 (Seagraves, $53,048) are 17.1 miles apart — a 1.5× income gap across local geography.

Median home values vary 2.5× across this county — from $89,000 in 79359 (Seagraves) to $219,200 in 79360 (Seminole).

Density varies across the county — from 4 people/sq mi in 79342 (Loop) to 16 in 79360 (Seminole).

Educational attainment ranges from 9.6% bachelor's+ in 79342 (Loop) to 19.3% in 79359 (Seagraves) — the breadth of educational profiles across the area.

Within Texas, this is the #13 most populous of 34 counties and ranks #14 for median household income with the #5 fastest decade growth .

Weighted by population, the typical household earns about $75,232 across the county — reflecting what a typical resident sees, not a simple ZIP average.

13.0% of adults age 25+ hold a bachelor's degree or higher (1,470 of 11,338 reporting).

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

Stories about Gaines 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
1,511
square miles
Avg density
13.8
people per sq mi
Population
20,885
across 3 ZIPs
Seminole
1,058.8 sq mi
17,342 residents
Seagraves
389.3 sq mi
3,294 residents
Loop
63.2 sq mi
249 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.

Seminole

All ZIP Codes in Gaines County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
79360SeminoleStandard17,342$79,4671,058.819.8%
79359SeagravesStandard3,294$53,048389.319.3%
79342LoopStandard249$73,75063.2-56.2%

Adjacent & Nearby Counties