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US ZIP Code Profile

ZIP Code 76687
Thornton, Texas

ZIP code 76687 is in Thornton, located in Limestone County, Texas. Its 2020 Census population was 1,500. The estimated median adjusted gross income per tax return is $52,500, and about 6% of filers report $200,000 or more.

2020 Population
1,500
Census ZCTA
County
Limestone
FIPS 48293
Median income (est.)
$52,500
IRS SOI 2022
Land Area
132.643 mi²
+ 5.619 mi² water

01Location & Geography

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

Primary CityThornton, TX
CountyLimestone County (FIPS 48293)
StateTexas (FIPS 48)
Census Region / DivisionSouth Region · West South Central Division
Coordinates31.372915, -96.495026
Land / Water Area132.643 mi² land · 5.619 mi² water

02Income & Economics

Distribution of the 640 individual tax returns filed in 76687 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
25.0%
$25K–$50K
23.4%
$50K–$75K
15.6%
$75K–$100K
10.9%
$100K–$200K
18.8%
$200K+
6.2%
The $200,000+ bracket accounts for 34% of 76687's total adjusted gross income, from 6% of returns — a concentration that drives the gap between the median ($52,500) 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 76687's IRS income metrics, 2020–2022.

Median income (2021→2022)
$52,500
▲ 10.9%
Filers earning $200K+
6.2%
▲ 1.3 pt
Total filers
640
▲ 4.9%
GET /zipc/v2/zipcodes/76687/soi?year=… $44K 2020 $47K 2021 $52K 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 76687 ZCTA.

2000
1,401
 
2010
1,466
▲ +4.6%
2020
1,500
▲ +2.3%

05USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortC
USPS Finance Number488980
City AliasesBighill, Davis Prairie, Odds, Old Union, Oletha, Thornton

06Frequently Asked Questions

What county is ZIP code 76687 in?

ZIP code 76687 is in Limestone County, Texas (county FIPS code 48293).

What city is ZIP code 76687?

The primary USPS city for 76687 is Thornton, TX.

What is the population of ZIP code 76687?

The 2020 Census population of 76687 was 1,500 residents.

What is the median income in ZIP code 76687?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 76687 is about $52,500, with around 6% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.