48028Harsens Island, MI
Prospecting data for 48028: Harsens Island, MI
Zip 48028 in Harsens Island, Michigan has about 490 homeowners. About 150 have a connected mobile phone and under 100 of those are clear of the National Do Not Call Registry.
Absentee owners 48028
Data as of 2026-09
- Absentee owners580
- Mailable address100%580
- Connected mobile14%under 100
- Email on file4%under 100
- Mobile and DNC clear4%under 100
Rounded floors, not promises.
| Population | 999 |
|---|---|
| Housing units | 1,500 |
| Owner occupied | 97% of occupied homes |
| Renter occupied | 3% of occupied homes |
| Median household income | $54,000 |
| Median age | 66.1 |
| Built before 1970 | 58% of homes |
| Built 2000 or later | 15% of homes |
| Median mortgage payment | $1,710 a month |
| Time zone | EST |
| Area code | 810 |
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 48028 homeowners have a deliverable mailing address. Mail is the only channel with no consent requirement, so it is the floor of any Harsens Island campaign.
Calling and texting reach about 30% 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 36%. 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.
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