77979 ZIP Code, Port Lavaca, TX
77979 is a ZIP code in Port Lavaca, Texas — mostly in Calhoun County (80% of its land), with smaller parts in Victoria and Jackson counties. It covers 340 square miles of land. The closest ZIP codes are 77978, 77969 and 77977. 16,488 people live here in 7,140 households. It is rural, with fewer than 100 people per square mile, and most homes are owner-occupied (75%). Median household income is $77,039, close to the Texas median of $78,476.
Quick facts
- Mailing city: Port Lavaca, TX
- County: Calhoun County
- Land area: 340 sq mi
- Population: 16,488
- Median household income: $77,039
- Carrier routes: 12 (6,930 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 16,488 |
| Households | 7,140 |
| Median household income | $77,039 |
| Income per person | $41,161 |
| Median age | 40.1 |
| Homeowners | 75.3% |
| Median home value | $156,200 |
| Median rent | $865 |
| Bachelor's degree or higher | 20.0% |
| Average commute (minutes) | 19.6 |
| Households with kids under 18 | 32.5% |
| Moved in the past year | 8.9% |
| Below the poverty line | 9.1% |
| Broadband internet | 87.1% |
| Speak a non-English language at home | 31.0% |
Household income
| % of households | Value |
|---|---|
| <$10K | 6.2% |
| $10–15K | 4.6% |
| $15–25K | 1.7% |
| $25–35K | 6.2% |
| $35–50K | 8.7% |
| $50–75K | 21.4% |
| $75–100K | 15.9% |
| $100–150K | 17.6% |
| $150–200K | 11.9% |
| $200K+ | 5.7% |
Age
| % of all residents | Value |
|---|---|
| <10 | 11.8% |
| 10–19 | 12.5% |
| 20–24 | 7.9% |
| 25–34 | 11.5% |
| 35–44 | 10.5% |
| 45–54 | 14.0% |
| 55–64 | 14.3% |
| 65–74 | 8.6% |
| 75+ | 8.7% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 29.5% |
| Owned outright | 35.3% |
| Rented | 21.2% |
| Vacant | 14.0% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 72.2% |
| Townhome | 2.4% |
| 2–4 units | 8.7% |
| 5–19 units | 1.6% |
| 20+ units | 2.7% |
| Mobile / other | 12.4% |
Businesses in 77979
347 business establishments with 5,936 employees (ZIP Codes Business Patterns 2023).
- Accommodation and Food Services: 55
- Retail Trade: 46
- Other Services (except Public Administration): 40
- Construction: 33
- Health Care and Social Assistance: 30
- Professional, Scientific, and Technical Services: 26
- Finance and Insurance: 24
- Administrative and Support and Waste Management and Remediation Services: 16
EDDM carrier routes
77979 has 12 USPS carrier routes with 6,930 residential and 544 business mailboxes. Open the EDDM route map.
Carrier routes in 77979
77979 has 12 USPS carrier routes (6 city (C), 6 rural (R)) with 6,930 residential and 544 business mailboxes. Routes range from 174 homes (R006) to 771 homes (C004); the median route has 639 homes. The Census counted 7,140 households in 77979 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 1 |
| 250–499 | 2 |
| 500–749 | 8 |
| 750–999 | 1 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 77979 for…
Highest income
For bigger-ticket offers: remodeling, pools, financial planning, private schools.
- Route R002 — Est. median household income $102,661, 646 homes
- Route C002 — Est. median household income $96,867, 727 homes
- Route R003 — Est. median household income $93,800, 344 homes
- Route R004 — Est. median household income $92,127, 673 homes
- Route R001 — Est. median household income $87,747, 530 homes
Select these 5 routes on the route map
Often mailed by: Home services EDDM, Real estate EDDM postcards, Landscaping and lawn care mailers
Most families with kids
For tutoring, youth sports, pediatric dental, child care and family dining.
- Route C005 — Est. families with children under 18 43.6%, 444 homes
- Route R005 — Est. families with children under 18 40.6%, 605 homes
- Route C004 — Est. families with children under 18 36.4%, 771 homes
- Route R004 — Est. families with children under 18 36.2%, 673 homes
- Route R006 — Est. families with children under 18 34.1%, 174 homes
Select these 5 routes on the route map
Often mailed by: Dental practice EDDM, Healthcare and clinic mailers
Most homeowners
Owners decide on roofs, HVAC, lawns, solar and insurance; renters usually can't.
- Route R003 — Est. owner-occupied homes 91.6%, 344 homes
- Route R002 — Est. owner-occupied homes 85.1%, 646 homes
- Route C002 — Est. owner-occupied homes 83.7%, 727 homes
- Route C006 — Est. owner-occupied homes 82.3%, 738 homes
- Route R006 — Est. owner-occupied homes 78.9%, 174 homes
Select these 5 routes on the route map
Often mailed by: Roofing direct mail, HVAC postcards
Most new movers
New residents are still choosing a dentist, a gym and a lawn service.
- Route R001 — Est. residents who moved in the past year 1.6%, 530 homes
- Route R003 — Est. residents who moved in the past year 1.6%, 344 homes
Select these 2 routes on the route map
Often mailed by: Restaurant EDDM menus and offers, Gym and fitness mailers
Newest homes
Newer subdivisions: landscaping, window treatments, fencing, security, home warranties.
- Route R006 — Est. homes built 2010 or later 23.5%, 174 homes
- Route R002 — Est. homes built 2010 or later 20.5%, 646 homes
- Route R001 — Est. homes built 2010 or later 19.6%, 530 homes
- Route R005 — Est. homes built 2010 or later 16.9%, 605 homes
- Route R004 — Est. homes built 2010 or later 14.3%, 673 homes
Select these 5 routes on the route map
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C001 — USPS business mailboxes 164, 634 homes
- Route C006 — USPS business mailboxes 117, 738 homes
- Route C004 — USPS business mailboxes 71, 771 homes
- Route C002 — USPS business mailboxes 54, 727 homes
- Route R001 — USPS business mailboxes 32, 530 homes
Select these 5 routes on the route map
Every carrier route in 77979
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C001 | City | 634 | 164 | $59,073 | 76.0% | 25.0% | — |
| C002 | City | 727 | 54 | $96,867 | 83.7% | 30.5% | — |
| C003 | City | 644 | 21 | $68,009 | 63.5% | 22.1% | — |
| C004 | City | 771 | 71 | $56,454 | 59.3% | 36.4% | — |
| C005 | City | 444 | 8 | $82,180 | 75.9% | 43.6% | — |
| C006 | City | 738 | 117 | $67,940 | 82.3% | 29.1% | — |
| R001 | Rural | 530 | 32 | $87,747 | 76.9% | 29.3% | 1.6% |
| R002 | Rural | 646 | 12 | $102,661 | 85.1% | 33.8% | — |
| R003 | Rural | 344 | 7 | $93,800 | 91.6% | 25.0% | 1.6% |
| R004 | Rural | 673 | 26 | $92,127 | 74.9% | 36.2% | — |
| R005 | Rural | 605 | 30 | $76,484 | 71.7% | 40.6% | — |
| R006 | Rural | 174 | 2 | $85,935 | 78.9% | 34.1% | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 77979 on the EDDM route map.
How route demographics are estimated
Mailbox counts come from USPS; demographics are estimates
The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).
How a route gets its figures: the block-group length-share method
We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.
Margins of error
Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.
Different years
USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.
Why some routes show identical figures
Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.
Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Nearby ZIP codes
- 77978 — Point Comfort city, TX (6.1 mi)
- 77969 — Vanderbilt CDP, TX (12.1 mi)
- 77977 — Placedo CDP, TX (12.1 mi)
- 77991 — Vanderbilt CDP, TX (12.2 mi)
- 77982 — Port O'Connor CDP, TX (13.8 mi)
- 77971 — Lolita CDP, TX (16.5 mi)
- 77983 — Seadrift city, TX (16.8 mi)
- 77951 — Bloomington CDP, TX (17.8 mi)
Areas that include 77979
- Port Lavaca, TX ZIP codes — 1 ZIP code
- Point Comfort, TX ZIP codes — 2 ZIP codes
- Magnolia Beach, TX ZIP codes — 1 ZIP code
- Alamo Beach, TX ZIP codes — 1 ZIP code
- Calhoun County ZIP codes — 5 ZIP codes
- Victoria County ZIP codes — 11 ZIP codes
- Texas ZIP code data
Mail every home in 77979
Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.
EDDM guides
ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 77979, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 77979 in?
- 77979 is a Port Lavaca, TX mailing address. By land area, 3% lies inside Port Lavaca; the rest is outside any Census-defined city or community.
- What county is 77979 in?
- 77979 is mostly in Calhoun County (80% of its land), with smaller parts in Victoria and Jackson counties.
- What is the population of 77979?
- About 16,488 people (±590), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 16,782.
- What is the median household income in 77979?
- $77,039 (±$8,517), compared with $78,476 for Texas as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 77979?
- 12 USPS carrier routes with 6,930 residential and 544 business mailboxes (7,474 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 77979?
- The closest, measured center to center: 77978 (6.1 mi, Point Comfort), 77969 (12.1 mi, Vanderbilt), 77977 (12.1 mi, Placedo), 77991 (12.2 mi, Vanderbilt), 77982 (13.8 mi, Port O'Connor) and 77971 (16.5 mi, Lolita).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.