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Zip Code 77521 — Baytown, TX

77521 is a ZIP Code associated with Baytown, TX, located within Harris. 77521 ranks #14 out of 132 ZIP codes in Harris County by population (and #56 out of 1,990 in TX). The area supports an estimated population of 69,038 residents across Data Pending housing units, with a population density of 541.0 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (29.812980, -94.962330)

Data MetricLocal Statistic
Postal / Zip Code77521
Primary CityBaytown
State / ProvinceTX
CountyHarris
Total Population69,038
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density541.0 people/sq mi
TimezoneAmerica/Chicago

How 77521 Compares

MetricZIP 77521Harris CountyTX State Average
Population69,0384,851,657 (Total)30,188,035 (Total)
Average ZIP IncomeData PendingN/AN/A
Population Density541.0 /sq mi----
County Pop Rank#14 of 132----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 77520Baytown5.3 mi36,355N/A
Zip 77562Highlands5.7 mi8,914N/A
Zip 77580Mont Belvieu5.8 miN/AN/A
Zip 77523Baytown6.5 mi30,186N/A
Zip 77530Channelview9.1 mi31,527N/A

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 →