Explore Port Alto, Texas, with this interactive street and satellite map. You can “grab” the Port Alto, TX street map and move it around to re-centre it. You can change between standard map view and satellite map view by clicking the small square in the bottom left-hand corner of the map. You can use the zoom buttons on the lower right side of the map to zoom in or out to street-level detail. You will find live weather, local and world news below.
| City | Port Alto |
| State | Texas (TX) |
| County | Calhoun |
| Country | United States of America |
| Timezone | Central Time (America/Chicago) |
| Latitude | 28.659994 |
| Longitude | -96.413306 |
| Population | 480 |
| Density | 18.0 /km² |
| Incorporated | N/A |
| ZIP Code(s) | 77979 |
| Area Code | 409 |
| County Seat | Port Lavaca |
Port Alto is a locality in Calhoun County, Texas, United States. It is a small community with a population of 480. The population density is 18.0 people per km². Port Alto is located at 28.6600°N, 96.4133°W. It observes the Central Time (America/Chicago) timezone. ZIP code: 77979.
Port Alto exists as a sliver of Texas coastline, its very being defined by the humid embrace of the Gulf of Mexico. It lies 13.3 miles east-northeast of Port Lavaca, TX (from Port Lavaca, TX: bearing 76°T), and is situated 12.3 miles west-southwest of Palacios. The landscape here is a study in subtle shifts, where salt-laced air carries the scent of sea-grass and the occasional briny whisper of the tide. Low-lying terrain, punctuated by the slow, meandering flow of Keller Creek, gives way to stretches of sandy soil that shimmer under the relentless Texas sun. Inland, the placid surface of Coxs Creek Reservoir offers a different kind of watery stillness, a stark contrast to the restless expanse of the Gulf. Even the distant Pepper Hill, a mere ripple on the horizon, seems to acknowledge the dominance of the sea. The pervasive presence of the Papahanaumokuakea Marine National Monument, a vital protected zone, imbues the very air with a sense of profound, almost ancient, natural stewardship, a feeling as palpable as the salt spray. The history of Port Alto is as inextricably tied to the sea as its geography. For generations, the local economy has ebbed and flowed with the bounty of the Gulf, its harbor a testament to the enduring spirit of fishermen and traders who navigated these waters. The echoes of past endeavors, from small-scale fishing operations to the more recent, yet still modest, oil and gas exploration that skirts its shores, can be felt in the weathered facades of buildings and the quiet hum of daily life. Life in Port Alto moves with a deliberate cadence, unhurried by the clamor of larger cities, a pace that allows for a deep appreciation of the coastal environment. The community, a blend of long-standing families and newer arrivals drawn by the allure of the coast, maintains a distinct cultural character, one that honors tradition while embracing the subtle evolution of this unique corner of Texas.
Loading news…
Loading news-world…
Loading news-world…
This page provides an embedded street and satellite map of Port Alto, Texas — switch between views using the small square in the bottom left-hand corner of the map. Coordinates: 28.659994, -96.413306. Live weather conditions are sourced directly from the National Weather Service, with current observations and a 7-day forecast also powered by Open-Meteo. Real-time local news and world news feeds keep the page current, while a Wikipedia summary or an editorially written description provides background on Port Alto and Calhoun County.
Detailed location data for Port Alto includes the ZIP code (77979), telephone area code (409), county seat of Calhoun County (Port Lavaca), and school district assignment. These are among the most commonly searched location details for any US city or town.
Location data is drawn from the USGS Geographic Names Information System (GNIS) and cross-verified against 2020 US Census records by coordinate proximity — ensuring the correct Port Alto is identified even where the name is shared across multiple counties or states. Population figures are sourced from the 2020 US Census.
| Page generated | July 2026 |
| Location data | SimpleMaps US Cities Database; coordinates matched to USGS GNIS definitive data |
| Wikipedia validation | Article content matched to USGS GNIS coordinates via Wikipedia geosearch API. Location verified by proximity — not name matching alone. |