21108Millersville, MD
Prospecting data for 21108: Millersville, MD
Zip 21108 in Millersville, Maryland has about 5,480 homeowners. About 1,970 have a connected mobile phone and 740 of those are clear of the National Do Not Call Registry.
Absentee owners 21108
Data as of 2026-09
- Absentee owners430
- Mailable address98%420
- Connected mobile8%under 100
- Email on file12%under 100
- Mobile and DNC clear3%under 100
Rounded floors, not promises.
| Population | 18,800 |
|---|---|
| Housing units | 6,830 |
| Owner occupied | 83% of occupied homes |
| Renter occupied | 17% of occupied homes |
| Median household income | $129,000 |
| Median age | 41.3 |
| Built before 1970 | 18% of homes |
| Built 2000 or later | 12% of homes |
| Median mortgage payment | $2,430 a month |
| Time zone | EST |
| Area code | 410 |
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: 96% of 21108 homeowners have a deliverable mailing address. Mail is the only channel with no consent requirement, so it is the floor of any Millersville campaign.
Calling and texting reach about 36% with a connected mobile, but only 13% 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 54%. 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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