ZIP Codes in Austin, TX

Austin uses 44 ZIP codes, all in Travis, Williamson, Hays Counties. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.

All 44 Austin ZIP codes

ZIP	Type	County	Population
78701	standard	Travis	11,824
78702	standard	Travis	25,985
78703	standard	Travis	23,483
78704	standard	Travis	50,688
78705	standard	Travis	33,238
78712	standard	Travis	201
78717	standard	Williamson	37,262
78719	standard	Travis	1,796
78721	standard	Travis	10,997
78722	standard	Travis	6,767
78723	standard	Travis	38,129
78724	standard	Travis	31,103
78725	standard	Travis	10,746
78726	standard	Travis	14,506
78727	standard	Travis	29,958
78728	standard	Travis	26,777
78729	standard	Williamson	30,460
78730	standard	Travis	9,142
78731	standard	Travis	27,507
78732	standard	Travis	21,087
78733	standard	Travis	9,029
78734	standard	Travis	22,145
78735	standard	Travis	20,996
78736	standard	Travis	9,651
78737	standard	Hays	27,023
78738	standard	Travis	31,019
78739	standard	Travis	20,659
78741	standard	Travis	45,951
78742	standard	Travis	847
78744	standard	Travis	50,986
78745	standard	Travis	61,219
78746	standard	Travis	28,256
78747	standard	Travis	22,180
78748	standard	Travis	55,631
78749	standard	Travis	34,562
78750	standard	Travis	29,277
78751	standard	Travis	16,961
78752	standard	Travis	23,317
78753	standard	Travis	56,920
78754	standard	Travis	32,690
78756	standard	Travis	9,197
78757	standard	Travis	23,856
78758	standard	Travis	49,617
78759	standard	Travis	43,182

Finding a ZIP+4 in Austin

Knowing which of these 44 ZIP codes covers an address only gets you partway. The four-digit extension identifies the specific delivery point — typically one side of one block. Two houses facing each other on the same Austin street almost always have different ZIP+4 codes even though they share all five leading digits.

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