57028Flandreau, SD
Prospecting data for 57028: Flandreau, SD
Zip 57028 in Flandreau, South Dakota has about 740 homeowners. About 270 have a connected mobile phone and under 100 of those are clear of the National Do Not Call Registry.
Absentee owners 57028
Data as of 2026-09
- Absentee owners280
- Mailable address98%270
- Connected mobile6%under 100
- Email on file11%under 100
- Mobile and DNC clear1%under 100
Rounded floors, not promises.
| Population | 3,420 |
|---|---|
| Housing units | 1,540 |
| Owner occupied | 63% of occupied homes |
| Renter occupied | 37% of occupied homes |
| Median household income | $56,000 |
| Median age | 35.7 |
| Built before 1970 | 59% of homes |
| Built 2000 or later | 6% of homes |
| Median mortgage payment | $1,290 a month |
| Time zone | CST |
| Area code | 605 |
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 57028 homeowners have a deliverable mailing address. Mail is the only channel with no consent requirement, so it is the floor of any Flandreau 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 45%. 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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