First three digits · Texas
ZIP Codes Starting with
28 ZIP codes start with 789, sorted at the Austin, TX (SCF 786) sectional center (USPS labeling list L005, effective October 1, 2026) in Texas: 25 residential ZIP codes across 7 counties and 3 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 789 mean?
The first digit, 7, is one of ten national areas (Arkansas, Louisiana, Oklahoma and Texas). The first three, 789, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 789 to the Austin, TX (SCF 786) facility. The last two digits pick the delivery area. By residents, the largest town names among the 789 ZIP codes are Smithville, La Grange, Giddings, Columbus, Schulenburg and Weimar.
The same facility sorts 5 prefixes, 232 ZIP codes in all: 733, 765, 786, 787, 789.
Where are the 789 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 789
| County | ||||||
|---|---|---|---|---|---|---|
| 78931 | Bleiblerville | Austin County | 185 | 14 | – | – |
| 78932 | Carmine | Washington County | 576 | 10 | $63k | $324k |
| 78933 | Cat Spring | Colorado County | 1,395 | 11 | $68k | $273k |
| 78934 | Columbus | Colorado County | 6,731 | 30 | $58k | $235k |
| 78935 | Alleyton | Colorado County | 734 | 12 | – | $217k |
| 78938 | Ellinger | Fayette County | 270 | 35 | $61k | $201k |
| 78940 | Fayetteville | Fayette County | 2,188 | 17 | $89k | $292k |
| 78941 | Flatonia | Fayette County | 3,619 | 22 | $77k | $194k |
| 78942 | Giddings | Lee County | 10,136 | 50 | $73k | $256k |
| 78943 | Glidden | Colorado County | 886 | 1,264 | $99k | $207k |
| 78944 | Industry | Austin County | 720 | 47 | $127k | $384k |
| 78945 | La Grange | Fayette County | 10,394 | 42 | $75k | $340k |
| 78946 | Ledbetter | Lee County | 1,117 | 11 | $65k | $316k |
| 78947 | Lexington | Lee County | 5,044 | 24 | $85k | $320k |
| 78948 | Lincoln | Lee County | 567 | 9 | $59k | $316k |
| 78949 | Muldoon | Fayette County | 760 | 9 | $64k | $285k |
| 78950 | New Ulm | Austin County | 2,300 | 20 | $91k | $248k |
| 78951 | Oakland | Colorado County | no residents | 0 | – | – |
| 78952 | Plum | Fayette County | PO Box or unique | – | – | – |
| 78953 | Rosanky | Bastrop County | 1,089 | 9 | $83k | $325k |
| 78954 | Round Top | Fayette County | 1,173 | 16 | $104k | $427k |
| 78956 | Schulenburg | Fayette County | 5,243 | 31 | $68k | $249k |
| 78957 | Smithville | Bastrop County | 10,543 | 60 | $69k | $260k |
| 78959 | Waelder | Gonzales County | 1,157 | 8 | $61k | – |
| 78960 | Warda | Fayette County | PO Box or unique | – | – | – |
| 78961 | Round Top | Fayette County | PO Box or unique | – | – | – |
| 78962 | Weimar | Colorado County | 5,236 | 30 | $71k | $236k |
| 78963 | West Point | Fayette County | 605 | 14 | $98k | $236k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.