Port Lavaca, TX 77979 ZIP Code Profile


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ZIP Code 77979: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Port Lavaca, TX 77979

Acceptable Alternative
Long Mott, TX 77979

Not Acceptable, USPS
Clarks, TX 77979
Green Lake, TX 77979
Indianola, TX 77979
Kamey, TX 77979
Magnolia Beach, TX 77979
Olivia, TX 77979
Port Alto, TX 77979
Weedhaven, TX 77979

  • ZIP Code Type: STANDARD
  • County: Calhoun County
  • Centroid: Latitude 28.617, Longitude -96.633
  • Time Zone: Central Time Zone (UTC -6 hours)
  • Observes DST: Yes
  • Businesses Addresses: 762
  • PO Box Addresses: 919
  • Residential Addresses: 6,685
    • Multi-Family Addresses: 562
    • Single Family Addresses: 6,123

The ZIP Code maps and database are updated 4 times per year.
Database updated: February 1, 2018, Maps updated: February 1, 2018.

EXTREMELY LOCAL Demographic Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting demographic data.


77979 ZIP Code Map

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Port Lavaca, TX 77979 Data & Demographics (As of July 1, 2017)


Total Population 19,702
Daytime Population: Workers 11,093
Daytime Population: Residents 12,034
Total Daytime Population (TDP) 23,127
Ratio TDP/Total Population1 1.17
Population in Households 19,454
Population in Familes 16,596
Population in Group Qrtrs 248
Population Density2 44
Diversity Index3 69


Median Household Income $49,166
Average Household Income $63,462
Per Capita Income $22,460


Total Housing Units 8,924 (100%)
Owner Occupied HU 4,630 (51.9%)
Renter Occupied HU 2,292 (25.7%)
Vacant Housing Units 2,002 (22.4%)
Median Home Value $102,048
Average Home Value $143,958


Total Households 6,922
Average Household Size 2.81
Family Households 5,033
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 0.83% 0.88%
Households 0.77% 0.85%
Families 0.71% 0.79%
Median Household Income   1.17%
Per Capita Income   2.15%

Port Lavaca, TX 77979 - Peer Comparisons by Rank and Percentile

The table below compares 77979 to the other 1,848 ZIP Codes in Texas by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 557 70th
Population Density # 1108 40th
Diversity Index # 487 74th
Median Household Income # 998 46th
Per Capita Income # 1290 30th

Additional comparisons and rankings can be made with a VERY EASY TO USE Texas Census Data Comparison Tool.

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