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US ZIP Code Profile

ZIP Code 79031
Earth, Texas

ZIP code 79031 is in Earth, located in Lamb County, Texas. Its 2020 Census population was 1,188. The estimated median adjusted gross income per tax return is $43,182.

2020 Population
1,188
Census ZCTA
County
Lamb
FIPS 48279
Median income (est.)
$43,182
IRS SOI 2022
Land Area
116.279 mi²
+ 0.137 mi² water

01Location & Geography

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

Primary CityEarth, TX
CountyLamb County (FIPS 48279)
StateTexas (FIPS 48)
Census Region / DivisionSouth Region · West South Central Division
Coordinates34.270256, -102.449585
Land / Water Area116.279 mi² land · 0.137 mi² water

02Income & Economics

Distribution of the 420 individual tax returns filed in 79031 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
30.9%
$25K–$50K
26.2%
$50K–$75K
16.7%
$75K–$100K
9.5%
$100K–$200K
16.7%
$200K+
0.0%
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 79031's IRS income metrics, 2020–2022.

Median income (2021→2022)
$43,182
▲ 12.3%
Filers earning $200K+
0.0%
▲ 0.0 pt
Total filers
420
▲ 0.0%
GET /zipc/v2/zipcodes/79031/soi?year=… $39K 2020 $38K 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 79031 ZCTA.

2000
1,308
 
2010
1,425
▲ +8.9%
2020
1,188
▼ -16.6%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortC
USPS Finance Number482670
City AliasesEarth

06Frequently Asked Questions

What county is ZIP code 79031 in?

ZIP code 79031 is in Lamb County, Texas (county FIPS code 48279).

What city is ZIP code 79031?

The primary USPS city for 79031 is Earth, TX.

What is the population of ZIP code 79031?

The 2020 Census population of 79031 was 1,188 residents.

What is the median income in ZIP code 79031?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 79031 is about $43,182. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.