Thornton is a town in Limestone County, Texas, home to about 565 people across 1.0 square miles. Its ZIP code is 76687.
Homes sold for a median of $326 per square foot in the three months ending August 2026, a buyer’s market.
Each card is that ZIP code’s whole market, including any part outside Thornton. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Thornton’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Dallas Love Field (DAL)101 miles away |
|---|---|
| Closer regional airport | Waco Regional Airport (ACT)45 miles away |
| Nearest city of 250,000+ | Arlington, TX96 miles away |
| Nearest city of 1 million+ | Dallas, TX97 miles away |
Straight-line distances from the center of Thornton; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Thornton had 421 residents in the 2020 census, down 20% since 2000.
It’s the 1228th largest of 1,778 towns in Texas by population.
Limestone County grew from 32,573 residents in 1900 to 22,146 in 2020.
Limestone County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 96°F in summer, and winter lows average 34°F. About 39 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Marlin, TX weather station (23 miles away).
5,200 jobs at 401 businesses in Limestone County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
2 doctors and other health care providers list an office in Thornton.
Nearest hospitals
Providers with an office here
| Nurse practitioners and physician assistants | 1 |
|---|---|
| Mental health providers | 1 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.