Calvert is a city in Robertson County, Texas, home to about 760 people across 3.9 square miles. Its ZIP code is 77837.
Mostly Calvert
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| Nearest major airport | Austin Bergstrom International Airport (AUS)80 miles away |
|---|---|
| Closer regional airport | Easterwood Field (CLL)32 miles away |
| Nearest city of 250,000+ | Austin, TX80 miles away |
| Nearest city of 1 million+ | Houston, TX112 miles away |
Straight-line distances from the center of Calvert; 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.
Calvert had 962 residents in the 2020 census, down 33% since 2000.
It’s the 1121st largest of 1,778 towns in Texas by population.
Robertson County grew from 31,480 residents in 1900 to 16,757 in 2020.
Robertson 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 39°F. About 40.6 inches of rain and melted snow fall in a typical year, with about 1 inches of snow.
Source: NOAA 1991–2020 climate normals, Franklin, TX weather station (11 miles away).
3,275 jobs at 297 businesses in Robertson County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
1 doctors and other health care providers list an office in Calvert.
Nearest hospitals
Providers with an office here
| 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.
Parks (1 nearby)
Counts are within about 1.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Calvert ISD. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Calvert SchoolCalvert | Pre-K–12 | 145 | Public | 0.5 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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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.