Port Isabel, TX ZIP Codes
One ZIP code serves Port Isabel, Texas: 78578. Together they are home to 10,016 residents in 4,379 households. That is more than the 5,111 people counted inside Port Isabel city limits, because these ZIP codes reach past its boundary.
Port Isabel city limits (Census)
| Measure | Census figure |
|---|---|
| Residents | 5,111 |
| Households | 2,067 |
| Median household income | $32,222 |
| Median home value | $182,600 |
| Median age | 37.8 |
| Median rent | $748 |
All 1 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 10,016 |
| Households (sum of ZIP codes) | 4,379 |
| Median household income, range across ZIP codes | $51,880 (78578) to $51,880 (78578) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $51,880 |
| Homeowners | 74.6% |
| Households with kids under 18 | 24.8% |
| Moved in the past year | 11.9% |
| Carrier routes in EDDM2GO's route library | 5 routes, 4,061 homes (1 of 1 ZIP codes) |
Every ZIP code in Port Isabel
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 78578 | Port Isabel | 10,016 | 4,379 | $51,880 | $196,200 | 74.6% | 24.8% | 11.9% | 5 | 4,308 | 12% of its land; mailing city |
A ZIP code is listed for Port Isabel when at least 10% of its land lies inside Port Isabel city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Port Isabel. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Port Isabel.
Counties
- Cameron County — 16 ZIP codes
Nearby cities sharing these ZIP codes
- Brownsville — 6 ZIP codes
Price a mailing to Port Isabel ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Port Isabel, TX?
- 78578. A ZIP code is listed for Port Isabel when at least 10% of its land lies inside Port Isabel city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Port Isabel.
- What is the population of Port Isabel, TX?
- The Census Bureau counts 5,111 residents inside Port Isabel city limits (ACS 2020–2024). The 1 ZIP code that serve Port Isabel hold 10,016 residents in all.
- What is the median household income in Port Isabel, TX?
- $32,222 inside Port Isabel city limits, per the Census Bureau. Across its ZIP codes the medians run from $51,880 to $51,880.
- How many carrier routes and mailboxes are in Port Isabel, TX?
- For the 1 of 1 ZIP codes in EDDM2GO's stored route library: 5 carrier routes reaching 4,061 residential and 247 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.