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ZIP Code Database - Facts & Stats

Data Last Updated: March 1, 2023

ZIP Codes for City of Sebastian, TX

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Counties:WILLACY, TX
Area Code(s):956
Timezone(s):Central (GMT -06:00)
City Population:1,917 (More Details)
CBSA:Raymondville, TX
Congressional District(s):34
Land Area:591 square miles (county)
Water Area:194 square miles (county)

1 ZIP Code

Sebastian, TX ZIP Code Boundaries

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Sebastian, TX Covers 1 ZIP Code

ZIP CodeTypePopulation% of PopulationAliases
78594P.O. Box1,990100.00%

Sebastian, TX Demographic Information *

Total population**1,917
Male population941
Female population976
Median age (years)33.5
White Population1,643
Black Population11
Indian Population3
Asian Population0
Hawaiian Population0
Hispanic Population1,813
Median age (Male)31.1
Median age (Female)35.1
Total households596
Family households (families)458
Average household size3.22
Average family size3.75
Total housing units682
* Demographic data is based on 2010 Census for the City of SEBASTIAN.
** 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],