21221Essex, MD
Prospecting data for 21221: Essex, MD
Zip 21221 in Essex, Maryland has about 9,810 homeowners. About 3,070 have a connected mobile phone and 1,420 of those are clear of the National Do Not Call Registry.
Absentee owners 21221
Data as of 2026-09
- Absentee owners1,970
- Mailable address99%1,960
- Connected mobile7%140
- Email on file11%220
- Mobile and DNC clear3%under 100
Rounded floors, not promises.
| Population | 42,100 |
|---|---|
| Housing units | 17,800 |
| Owner occupied | 57% of occupied homes |
| Renter occupied | 43% of occupied homes |
| Median household income | $58,000 |
| Median age | 39.1 |
| Built before 1970 | 57% of homes |
| Built 2000 or later | 8% of homes |
| Median mortgage payment | $1,540 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: 98% of 21221 homeowners have a deliverable mailing address. Mail is the only channel with no consent requirement, so it is the floor of any Essex campaign.
Calling and texting reach about 31% with a connected mobile, but only 14% 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 49%. 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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