Castroville, TX ZIP Codes
One ZIP code serves Castroville, Texas: 78009. Together they are home to 9,151 residents in 2,980 households. That is more than the 3,092 people counted inside Castroville city limits, because these ZIP codes reach past its boundary.
Castroville city limits (Census)
| Measure | Census figure |
|---|---|
| Residents | 3,092 |
| Households | 1,211 |
| Median household income | $78,460 |
| Median home value | $300,000 |
| Median age | 48.8 |
| Median rent | $1,253 |
All 1 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 9,151 |
| Households (sum of ZIP codes) | 2,980 |
| Median household income, range across ZIP codes | $103,125 (78009) to $103,125 (78009) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $103,125 |
| Homeowners | 86.0% |
| Households with kids under 18 | 31.9% |
| Moved in the past year | 13.2% |
| Carrier routes in EDDM2GO's route library | 6 routes, 3,998 homes (1 of 1 ZIP codes) |
Every ZIP code in Castroville
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 78009 | Castroville | 9,151 | 2,980 | $103,125 | $368,700 | 86.0% | 31.9% | 13.2% | 6 | 4,283 | 4% of its land; mailing city |
A ZIP code is listed for Castroville when at least 10% of its land lies inside Castroville city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Castroville. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Castroville.
Counties
- Medina County — 15 ZIP codes
Metro maps
- San Antonio ZIP code map — 121 ZIP codes
Price a mailing to Castroville ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Castroville, TX?
- 78009. A ZIP code is listed for Castroville when at least 10% of its land lies inside Castroville city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Castroville.
- What is the population of Castroville, TX?
- The Census Bureau counts 3,092 residents inside Castroville city limits (ACS 2020–2024). The 1 ZIP code that serve Castroville hold 9,151 residents in all.
- What is the median household income in Castroville, TX?
- $78,460 inside Castroville city limits, per the Census Bureau. Across its ZIP codes the medians run from $103,125 to $103,125.
- How many carrier routes and mailboxes are in Castroville, TX?
- For the 1 of 1 ZIP codes in EDDM2GO's stored route library: 6 carrier routes reaching 3,998 residential and 282 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.