Port Lavaca, TX micro area ZIP codes
The Port Lavaca, TX micropolitan statistical area (CBSA 38920) covers 1 county in Texas and 4 ZIP codes.
- ZIP codes
- 4
- Population
- 19,941
- Avg. median income
- $81,300population-weighted
- Counties
- 1
Click anywhere on the map to see which ZIP code it's in.
Counties in the Port Lavaca, TX area
ZIP codes in the Port Lavaca, TX area
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 77978 | Point Comfort | Calhoun County | 304 | $142,500 | $120,300 |
| 77979 | Port Lavaca | Calhoun County | 16,488 | $77,039 | $186,400 |
| 77982 | Port O Connor | Calhoun County | 620 | $95,593 | $348,600 |
| 77983 | Seadrift | Calhoun County | 2,529 | $97,850 | $189,300 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Frequently asked questions
How many ZIP codes are in the Port Lavaca, TX micro area?
4 ZIP codes, based on each ZIP code's main county.
Which counties make up the Port Lavaca, TX area?
Calhoun County.
What is an MSA?
A metropolitan statistical area (MSA) is a core city of 50,000+ people plus the surrounding counties tied to it by commuting, as defined by the U.S. Office of Management and Budget. Micropolitan areas have a core of 10,000–50,000. Together they are called core-based statistical areas (CBSAs).