21042Ellicott City, MD
Prospecting data for 21042: Ellicott City, MD
Zip 21042 in Ellicott City, Maryland has about 12,100 homeowners. About 4,770 have a connected mobile phone and 1,720 of those are clear of the National Do Not Call Registry.
Absentee owners 21042
Data as of 2026-09
- Absentee owners670
- Mailable address97%650
- Connected mobile7%under 100
- Email on file11%under 100
- Mobile and DNC clear3%under 100
Rounded floors, not promises.
| Population | 41,200 |
|---|---|
| Housing units | 14,500 |
| Owner occupied | 86% of occupied homes |
| Renter occupied | 14% of occupied homes |
| Median household income | $157,000 |
| Median age | 44.2 |
| Built before 1970 | 21% of homes |
| Built 2000 or later | 18% of homes |
| Median mortgage payment | $3,070 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: 95% of 21042 homeowners have a deliverable mailing address. Mail is the only channel with no consent requirement, so it is the floor of any Ellicott City campaign.
Calling and texting reach about 39% 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 55%. 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
MetroBaltimore, MD CountyHoward MDHomeownersMDAbsentee owners 21043Ellicott City20723Laurel20759Fulton20763Savage20777Highland20794Jessup21029Clarksville21036Dayton21044Columbia21045Columbia21046Columbia21075Elkridge21104Marriottsville21163Woodstock21723Cooksville21737Glenelg21738Glenwood21794West Friendship21797Woodbine
→Free counts
Counts for your zip codes
Tell us the zip codes or counties you want and we reply with the same ledger for your area and a free sample.
Get counts