Castro County, TX ZIP Codes
6 ZIP codes cover all or part of Castro County, Texas: 79045, 79027, 79043, 79042, 79063 and 79085. The Census Bureau counts 7,344 residents in the county, with a median household income of $56,776 and a median home value of $95,000. Median household income ranges from $50,865 in 79027 to $70,590 in 79042. Its largest communities include Dimmitt, Hart, Nazareth and Summerfield.
Castro County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 7,344 |
| Households | 2,413 |
| Median household income | $56,776 |
| Median home value | $95,000 |
| Median age | 34.5 |
| Median rent | $896 |
All 6 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 26,392 |
| Households (sum of ZIP codes) | 8,721 |
| Median household income, range across ZIP codes | $50,865 (79027) to $70,590 (79042) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $59,083 |
| Homeowners | 66.1% |
| Households with kids under 18 | 42.0% |
| Moved in the past year | 10.3% |
| Carrier routes in EDDM2GO's route library | 28 routes, 8,637 homes (6 of 6 ZIP codes) |
Top facts
- Highest median household income in Castro County: 79042 ($70,590)
- Most residents: 79045 (18,189 people)
- Highest homeownership: 79042 (81.2% own their home)
- Most households with kids: 79043 (58.7% of households)
- Most new movers: 79027 (16.4% moved in last year)
- Youngest median age: 79042 (30.3 years)
- Highest median home value: 79042 ($148,500)
Every ZIP code in Castro County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 79045 | Hereford | 18,189 | 6,002 | $60,543 | $116,500 | 66.7% | 42.2% | 8.9% | 13 | 7,303 | 16% of its land |
| 79027 | Dimmitt | 4,858 | 1,660 | $50,865 | $90,900 | 57.9% | 39.2% | 16.4% | 7 | 1,656 | 99% of its land |
| 79043 | Hart | 1,462 | 397 | $57,956 | $60,200 | 58.4% | 58.7% | 3.3% | 3 | 77 | 82% of its land |
| 79042 | Happy | 1,218 | 463 | $70,590 | $148,500 | 81.2% | 37.6% | 15.4% | 2 | 193 | 23% of its land |
| 79063 | Nazareth | 665 | 199 | $110,938 | $248,900 | 96.5% | 37.2% | 9.4% | 2 | 109 | 100% of its land |
| 79085 | Summerfield | 0 | 0 | — | — | — | — | — | 1 | 23 | 100% of its land |
A ZIP code is listed for Castro County when at least 10% of its land is in the county, when it holds at least 10% of the county's land, or when the county is its main county. Totals add up whole ZIP codes, including parts that cross the county line; the Census county figures above do not.
Cities and communities
- Dimmitt — 4,107 residents · 1 ZIP code
- Hart — 919 residents · 1 ZIP code
- Nazareth — 273 residents · 1 ZIP code
- Summerfield — 0 residents · 1 ZIP code
Price a mailing to Castro County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Castro County, TX?
- 79045, 79027, 79043, 79042, 79063 and 79085. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Castro County?
- 7,344 residents in 2,413 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Castro County?
- $56,776 for the county as a whole. Its ZIP codes range from $50,865 (79027) to $70,590 (79042).
- Which Castro County ZIP code has the highest median household income?
- 79042, at $70,590, among ZIP codes with at least 1,000 residents.
- How many carrier routes and mailboxes are in Castro County?
- For the 6 of 6 ZIP codes in EDDM2GO's stored route library: 28 carrier routes reaching 8,637 residential and 724 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.