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US ZIP Code Profile

ZIP Code 79331
Lamesa, Texas

ZIP code 79331 is in Lamesa, located in Dawson County, Texas, within the Lamesa metro area. Its 2020 Census population was 11,825. The estimated median adjusted gross income per tax return is $42,625, and about 5% of filers report $200,000 or more.

2020 Population
11,825
Census ZCTA
County
Dawson
FIPS 48115
Median income (est.)
$42,625
IRS SOI 2022
Land Area
747.56 mi²
+ 1.14 mi² water

01Location & Geography

Authoritative geographic identifiers from the U.S. Census Bureau, ANSI, and FIPS standards.

Primary CityLamesa, TX
CountyDawson County (FIPS 48115)
StateTexas (FIPS 48)
Metro Area (MSA)Lamesa, TX Micro Area (29500)
Census Region / DivisionSouth Region · West South Central Division
Coordinates32.695213, -102.00957
Land / Water Area747.56 mi² land · 1.14 mi² water

02Income & Economics

Distribution of the 4,110 individual tax returns filed in 79331 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
32.9%
$25K–$50K
24.3%
$50K–$75K
15.6%
$75K–$100K
9.2%
$100K–$200K
12.7%
$200K+
5.3%
The $200,000+ bracket accounts for 34% of 79331's total adjusted gross income, from 5% of returns — a concentration that drives the gap between the median ($42,625) and the average.
Estimated median = median adjusted gross income per tax return, interpolated from IRS SOI brackets. Differs from U.S. Census household income.

03Income Over Time

Year-over-year change in 79331's IRS income metrics, 2020–2022.

Median income (2021→2022)
$42,625
▲ 10.3%
Filers earning $200K+
5.3%
▲ 1.1 pt
Total filers
4,110
▼ 1.9%
GET /zipc/v2/zipcodes/79331/soi?year=… $35K 2020 $39K 2021 $43K 2022
Median = adjusted gross income per return, interpolated from IRS SOI brackets. Figures are nominal (not inflation-adjusted).

04Population Trend

Decennial U.S. Census population for the 79331 ZCTA.

2000
14,272
 
2010
13,258
▼ -7.1%
2020
11,825
▼ -10.8%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number484900
City AliasesLamesa, La Mesa

06Frequently Asked Questions

What county is ZIP code 79331 in?

ZIP code 79331 is in Dawson County, Texas (county FIPS code 48115).

What city is ZIP code 79331?

The primary USPS city for 79331 is Lamesa, TX.

What metro area (MSA) is 79331 in?

79331 is part of the Lamesa, TX Micro Area (MSA code 29500).

What is the population of ZIP code 79331?

The 2020 Census population of 79331 was 11,825 residents.

What is the median income in ZIP code 79331?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 79331 is about $42,625, with around 5% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.