There are 18 zip codes in Galveston County, Texas. The most populated is 77573, located in League City. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
77573League City95,704
77546Friendswood53,830
77539Dickinson47,240
77590Texas City33,347
77550Galveston23,215
77551Galveston22,521
77568La Marque20,417
77591Texas City15,914
77510Santa Fe13,506
77563Hitchcock10,382
77518Bacliff10,313
77554Galveston9,825
77565Kemah6,493
77517Santa Fe6,160
77650Port Bolivar2,073
77623High Island515
77617Gilchrist38
77555Galveston3

Galveston County, Texas Zip Codes by Population (2024)