78578Port Isabel, TX
Prospecting data for 78578: Port Isabel, TX
Zip 78578 in Port Isabel, Texas has about 2,290 homeowners. About 460 have a connected mobile phone and 220 of those are clear of the National Do Not Call Registry.
Absentee owners 78578
Data as of 2026-09
- Absentee owners2,250
- Mailable address100%2,240
- Connected mobile6%130
- Email on file5%120
- Mobile and DNC clear3%under 100
Rounded floors, not promises.
| Population | 11,800 |
|---|---|
| Housing units | 6,880 |
| Owner occupied | 68% of occupied homes |
| Renter occupied | 32% of occupied homes |
| Median household income | $36,000 |
| Median age | 44.1 |
| Built before 1970 | 10% of homes |
| Built 2000 or later | 37% of homes |
| Median mortgage payment | $1,150 a month |
| Time zone | CST |
| Area code | 956 |
Census figures are rounded ACS 5-year estimates for the zip code tabulation area.
What this means for each channel
Direct mail reaches almost everyone: 99% of 78578 homeowners have a deliverable mailing address. Mail is the only channel with no consent requirement, so it is the floor of any Port Isabel campaign.
Calling and texting reach about 20% with a connected mobile, but only 9% once you remove numbers on the National Do Not Call Registry. Texting a cold list also needs prior express written consent under the TCPA, so the DNC-clear figure is a calling figure, not a texting figure. See cold calling laws by state.
Email reaches about 31%. Cold email to consumers is legal under CAN-SPAM with an opt-out and a physical address, but deliverability on purchased consumer email is poor; treat it as a supporting touch.
→Nearby
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