Castro County, Texas ZIP codes
4 ZIP codes are in Castro County, plus 6 that cross in from neighboring counties.
- ZIP codes
- 4
- Population in these ZIPs
- 6,985
- Avg. median income
- $58,100population-weighted
- Cities & towns
- 4
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ZIP codes in Castro County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 79027 | Dimmitt | 4,858 | $50,865 | $126,700 |
| 79043 | Hart | 1,462 | $57,956 | $60,200 |
| 79063 | Nazareth | 665 | $110,938 | $248,900 |
| 79085 | Summerfield | 0 | — | — |
ZIP codes partly in Castro County
These ZIP codes are mostly in a neighboring county but cover part of Castro County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 79031 | Earth | Lamb County | 1,156 | $43,750 | $96,000 |
| 79042 | Happy | Randall County | 1,218 | $70,590 | $184,500 |
| 79045 | Hereford | Deaf Smith County | 18,189 | $60,543 | $168,500 |
| 79052 | Kress | Swisher County | 1,101 | $34,922 | $123,300 |
| 79088 | Tulia | Swisher County | 5,302 | $35,804 | $94,000 |
| 79347 | Muleshoe | Bailey County | 7,176 | $66,792 | $143,000 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Castro County
Nearby counties
Frequently asked questions
How many ZIP codes are in Castro County, Texas?
4 ZIP codes are mainly in Castro County, and 6 more ZIP codes from neighboring areas reach partly into it.
What cities are in Castro County?
ZIP codes in Castro County use the city names Dimmitt, Hart, Nazareth and Summerfield.