60428Markham, IL
Prospecting data for 60428: Markham, IL
Zip 60428 in Markham, Illinois has about 3,010 homeowners. About 880 have a connected mobile phone and 550 of those are clear of the National Do Not Call Registry.
Absentee owners 60428
Data as of 2026-09
- Absentee owners1,070
- Mailable address100%1,070
- Connected mobile7%under 100
- Email on file9%100
- Mobile and DNC clear5%under 100
Rounded floors, not promises.
| Population | 12,200 |
|---|---|
| Housing units | 4,510 |
| Owner occupied | 72% of occupied homes |
| Renter occupied | 28% of occupied homes |
| Median household income | $43,000 |
| Median age | 37.1 |
| Built before 1970 | 75% of homes |
| Built 2000 or later | 12% of homes |
| Median mortgage payment | $1,220 a month |
| Time zone | CST |
| Area code | 708 |
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: 100% of 60428 homeowners have a deliverable mailing address. Mail is the only channel with no consent requirement, so it is the floor of any Markham campaign.
Calling and texting reach about 29% with a connected mobile, but only 18% 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 37%. 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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