Zip Code 77642 — Port Arthur, TX

ZIP Code 77642 is associated with Port Arthur, TX, in Jefferson County. The listed population estimate is 38,358; estimated density is 750.9 people per square mile. Among records with population estimates, it ranks #1 of 17 in Jefferson County and #255 of 1,924 in TX.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (29.939170, -93.916060)

Data MetricLocal Statistic
Postal / Zip Code77642
Primary CityPort Arthur
State / ProvinceTX
CountyJefferson
Total Population38,358
Population Density750.9 people/sq mi
TimezoneAmerica/Chicago

How 77642 Compares

MetricZIP 77642Jefferson County recordsTX records
Population estimate38,358252,884 (sum)30,188,035 (sum)
Population Density750.9 /sq mi----
County population rank#1 of 17----
State population rank#255 of 1,924----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in TX

ZIP CodeCityDistancePopulation estimate
ZIP 77619Groves0.4 mi16,976
ZIP 77651Port Neches3.4 mi13,664
ZIP 77640Port Arthur4.3 mi17,167
ZIP 77627Nederland6.6 mi22,357
ZIP 77611Bridge City7.6 mi10,112

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →