ZIP code · Corpus Christi · Texas · United States
ZIP code 78403 — Corpus Christi
ZIP code 78403 serves Corpus Christi, Texas.
- Postal code
- 78403Single source Value from one source, not cross-checked.
- City
- Corpus Christi
- County
- Nueces
- State
- Texas
- Country
- United States
- Coordinates
- 27.7770, -97.4632 — precision precise (locality)
View on OpenStreetMap - USDA hardiness zone
- 10a (30 to 35 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Chicago (UTC−6 / UTC−5 DST)
- Area code
- 361Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 78403 with another ZIP · ZIPs within 25 miles · distance from 78403
Climate — monthly normals
Warmest month Aug (avg high 93°F), coldest Jan (avg low 47°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 66 | 70 | 75 | 81 | 86 | 90 | 92 | 93 | 89 | 84 | 75 | 68 |
| Avg low °F | 47 | 51 | 58 | 63 | 71 | 75 | 76 | 77 | 73 | 66 | 56 | 49 |
| Precip in | 1.4 | 1.4 | 2.3 | 2.0 | 3.3 | 3.5 | 2.5 | 2.8 | 5.4 | 2.7 | 2.0 | 1.9 |
NOAA 1991–2020 climate normals from the nearest station: CORPUS CHRISTI NWS (2.6 mi) · NOAA NCEI
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page