Calhoun County, TX ZIP Codes
5 ZIP codes cover all or part of Calhoun County, Texas: 77979, 77983, 77982, 77990 and 77978. The Census Bureau counts 19,868 residents in the county, with a median household income of $79,959 and a median home value of $171,200. Median household income ranges from $77,039 in 77979 to $97,850 in 77983. Its largest communities include Port Lavaca, Seadrift, Port O'Connor, Point Comfort and Magnolia Beach.
Calhoun County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 19,868 |
| Households | 8,670 |
| Median household income | $79,959 |
| Median home value | $171,200 |
| Median age | 41.4 |
| Median rent | $891 |
All 5 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 20,531 |
| Households (sum of ZIP codes) | 8,932 |
| Median household income, range across ZIP codes | $77,039 (77979) to $97,850 (77983) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $79,872 |
| Homeowners | 77.7% |
| Households with kids under 18 | 31.3% |
| Moved in the past year | 9.6% |
| Carrier routes in EDDM2GO's route library | 14 routes, 7,483 homes (3 of 5 ZIP codes) |
Top facts
- Highest median household income in Calhoun County: 77983 ($97,850)
- Most residents: 77979 (16,488 people)
- Highest homeownership: 77983 (85.4% own their home)
- Most households with kids: 77979 (32.5% of households)
- Most new movers: 77983 (18.0% moved in last year)
- Youngest median age: 77979 (40.1 years)
- Highest median home value: 77983 ($292,000)
Every ZIP code in Calhoun County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 77979 | Port Lavaca | 16,488 | 7,140 | $77,039 | $156,200 | 75.3% | 32.5% | 8.9% | 12 | 7,474 | 80% of its land |
| 77983 | Seadrift | 2,529 | 1,125 | $97,850 | $292,000 | 85.4% | 30.5% | 18.0% | 1 | 398 | 100% of its land |
| 77982 | Port O Connor | 620 | 288 | $95,593 | $415,300 | 100.0% | 16.7% | 0.2% | — | — | 100% of its land |
| 77990 | Tivoli | 590 | 255 | $75,417 | $54,200 | 91.0% | 26.7% | 9.2% | 1 | 173 | 21% of its land |
| 77978 | Point Comfort | 304 | 124 | $142,500 | $251,600 | 66.9% | 13.7% | 0.0% | — | — | 100% of its land |
A ZIP code is listed for Calhoun County when at least 10% of its land is in the county, when it holds at least 10% of the county's land, or when the county is its main county. Totals add up whole ZIP codes, including parts that cross the county line; the Census county figures above do not.
Cities and communities
- Port Lavaca — 11,358 residents · 1 ZIP code
- Seadrift — 1,239 residents · 1 ZIP code
- Port O'Connor — 620 residents · 1 ZIP code
- Point Comfort — 304 residents · 2 ZIP codes
- Magnolia Beach — 97 residents · 1 ZIP code
- Alamo Beach — 90 residents · 1 ZIP code
Price a mailing to Calhoun County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Calhoun County, TX?
- 77979, 77983, 77982, 77990 and 77978. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Calhoun County?
- 19,868 residents in 8,670 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Calhoun County?
- $79,959 for the county as a whole. Its ZIP codes range from $77,039 (77979) to $97,850 (77983).
- Which Calhoun County ZIP code has the highest median household income?
- 77983, at $97,850, among ZIP codes with at least 1,000 residents.
- How many carrier routes and mailboxes are in Calhoun County?
- For the 3 of 5 ZIP codes in EDDM2GO's stored route library: 14 carrier routes reaching 7,483 residential and 562 business mailboxes. The route map loads the rest when you search them.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.