Douglas County, SD ZIP Codes
7 ZIP codes cover all or part of Douglas County, South Dakota: 57366, 57328, 57313, 57330, 57331, 57344 and 57364. The Census Bureau counts 2,828 residents in the county, with a median household income of $86,442 and a median home value of $166,900. Median household income ranges from $78,155 in 57366 to $89,107 in 57313. Its largest communities include Corsica, Armour, Delmont, Clearfield Colony and New Holland.
Douglas County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 2,828 |
| Households | 1,138 |
| Median household income | $86,442 |
| Median home value | $166,900 |
| Median age | 42 |
| Median rent | $877 |
All 7 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 5,976 |
| Households (sum of ZIP codes) | 2,330 |
| Median household income, range across ZIP codes | $78,155 (57366) to $89,107 (57313) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $82,943 |
| Homeowners | 76.8% |
| Households with kids under 18 | 27.3% |
| Moved in the past year | 9.0% |
| Carrier routes in EDDM2GO's route library | 8 routes, 1,288 homes (5 of 7 ZIP codes) |
Top facts
- Highest median household income in Douglas County: 57313 ($89,107)
- Most residents: 57366 (2,598 people)
- Highest homeownership: 57313 (79.1% own their home)
- Most households with kids: 57313 (29.7% of households)
- Most new movers: 57328 (15.6% moved in last year)
- Youngest median age: 57313 (39.5 years)
- Highest median home value: 57328 ($211,400)
Every ZIP code in Douglas County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 57366 | Parkston | 2,598 | 1,035 | $78,155 | $184,600 | 76.1% | 25.3% | 9.2% | 3 | 773 | 11% of its land |
| 57328 | Corsica | 1,290 | 517 | $86,985 | $211,400 | 73.3% | 29.4% | 15.6% | 2 | 367 | 98% of its land |
| 57313 | Armour | 1,220 | 465 | $89,107 | $117,300 | 79.1% | 29.7% | 4.5% | — | — | 66% of its land |
| 57330 | Delmont | 594 | 171 | $71,563 | $143,800 | 86.5% | 36.3% | 3.7% | 1 | 111 | 61% of its land |
| 57331 | Dimock | 231 | 111 | $101,406 | $292,500 | 74.8% | 19.8% | 7.7% | — | — | 23% of its land |
| 57344 | Harrison | 39 | 27 | — | $275,000 | 88.9% | 0.0% | 0.0% | 1 | 64 | 100% of its land |
| 57364 | New Holland | 4 | 4 | — | — | 0.0% | 0.0% | 0.0% | 1 | 22 | 100% of its land |
A ZIP code is listed for Douglas County when at least 10% of its land is in the county, when it holds at least 10% of the county's land, or when the county is its main county. Totals add up whole ZIP codes, including parts that cross the county line; the Census county figures above do not.
Cities and communities
- Corsica — 699 residents · 1 ZIP code
- Armour — 675 residents · 1 ZIP code
- Delmont — 183 residents · 1 ZIP code
- Clearfield Colony — 106 residents · 1 ZIP code
- New Holland — 4 residents · 1 ZIP code
- Greenwood Colony — 0 residents · 1 ZIP code
- Harrison — 0 residents · 1 ZIP code
Price a mailing to Douglas County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Douglas County, SD?
- 57366, 57328, 57313, 57330, 57331, 57344 and 57364. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Douglas County?
- 2,828 residents in 1,138 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Douglas County?
- $86,442 for the county as a whole. Its ZIP codes range from $78,155 (57366) to $89,107 (57313).
- Which Douglas County ZIP code has the highest median household income?
- 57313, at $89,107, among ZIP codes with at least 1,000 residents.
- How many carrier routes and mailboxes are in Douglas County?
- For the 5 of 7 ZIP codes in EDDM2GO's stored route library: 8 carrier routes reaching 1,288 residential and 49 business mailboxes. The route map loads the rest when you search them.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.