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ZIP Code Database - Facts & Stats

Data Last Updated: March 1, 2023

ZIP Codes for City of Rock Island, TX

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Area Code(s):979
Timezone(s):Central (GMT -06:00)
City Population:338 (More Details)
Congressional District(s):10
Land Area:960 square miles (county)
Water Area:13 square miles (county)

1 ZIP Code

Rock Island, TX ZIP Code Boundaries

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Rock Island, TX Covers 1 ZIP Code

ZIP CodeTypePopulation% of PopulationAliases
77470P.O. Box338100.00%

Rock Island, TX Demographic Information *

There is no Census data for the city of ROCK ISLAND, TX. We have pulled information for the ZIP Code 77470 instead.
Total population**338
Male population177
Female population161
Median age (years)42.6
White Population299
Black Population6
Indian Population0
Asian Population0
Hawaiian Population0
Hispanic Population54
Median age (Male)40.5
Median age (Female)45.6
Total households140
Family households (families)86
Average household size2.41
Average family size3.15
Total housing units197
* Demographic data is based on 2010 Census for the City of ROCK ISLAND.
** City and ZIP Code Population will not be equal due to differences in their geographies.


  1. U.S. Postal Service [Last Updated: 2/1/2023],
  2. Internal Data Creation [Last Updated: 2/1/2023],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],