03857Newmarket, NH
Prospecting data for 03857: Newmarket, NH
Zip 03857 in Newmarket, New Hampshire has about 1,990 homeowners. About 580 have a connected mobile phone and 220 of those are clear of the National Do Not Call Registry.
Absentee owners 03857
Data as of 2026-09
- Absentee owners490
- Mailable address98%480
- Connected mobile6%under 100
- Email on file24%120
- Mobile and DNC clear2%under 100
Rounded floors, not promises.
| Population | 9,060 |
|---|---|
| Housing units | 4,190 |
| Owner occupied | 53% of occupied homes |
| Renter occupied | 47% of occupied homes |
| Median household income | $74,000 |
| Median age | 36.3 |
| Built before 1970 | 34% of homes |
| Built 2000 or later | 17% of homes |
| Median mortgage payment | $2,060 a month |
| Time zone | EST |
| Area code | 603 |
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 03857 homeowners have a deliverable mailing address. Mail is the only channel with no consent requirement, so it is the floor of any Newmarket campaign.
Calling and texting reach about 29% 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 50%. 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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