21223Baltimore, MD
Prospecting data for 21223: Baltimore, MD
Zip 21223 in Baltimore, Maryland has about 3,830 homeowners. About 660 have a connected mobile phone and 410 of those are clear of the National Do Not Call Registry.
Absentee owners 21223
Data as of 2026-09
- Absentee owners2,670
- Mailable address100%2,660
- Connected mobile5%130
- Email on file7%170
- Mobile and DNC clear3%under 100
Rounded floors, not promises.
| Population | 22,400 |
|---|---|
| Housing units | 13,900 |
| Owner occupied | 34% of occupied homes |
| Renter occupied | 66% of occupied homes |
| Median household income | $29,000 |
| Median age | 36.8 |
| Built before 1970 | 86% of homes |
| Built 2000 or later | 3% of homes |
| Median mortgage payment | $1,110 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: 99% of 21223 homeowners have a deliverable mailing address. Mail is the only channel with no consent requirement, so it is the floor of any Baltimore campaign.
Calling and texting reach about 17% with a connected mobile, but only 11% 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 29%. 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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