Yankton County, SD ZIP codes
There are 7 ZIP codes in Yankton County, SD, in 7 towns, from 57031 to 57078. The largest are 57078 (Yankton), 57037 (Irene) and 57031 (Gayville). 1 more crosses into it from a neighbouring county: 57045.
The county seat is Yankton.
- ZIP codes
- 7
- Partly in it
- 1 more
- Towns
- 7
- County seat
- Yankton
- County FIPS
46135- State
- South Dakota
- Population
- 23,414
- Median household income
- $72,821
- Land area
- 521 sq mi
- Area code
- 605
- Metro area
- Yankton
Yankton County ZIP codes by town
Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.
ZIP codes partly in Yankton County
This ZIP code lies mostly in a neighbouring county but covers a twentieth or more of Yankton County.
- 57045 Menno · mostly in Hutchinson County
Map of Yankton County ZIP codes
The ZIP codes of Yankton County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
Yankton County in numbers
About 23,414 people live in Yankton County, in 9,695 households, the 9th most populous of South Dakota's 66 counties. The median household income is $72,821 a year, 3% below the South Dakota median of $75,081 (US: $80,734). The median owner-occupied home is valued at $225,900 (12% below the South Dakota median), and median gross rent is $781 a month. The median age is 42.5; 31.4% of adults 25 and over hold a bachelor's degree or higher (31.9% across South Dakota); the average commute takes 15 minutes.
| Population | 23,414 |
|---|---|
| Households | 9,695 |
| Median age | 42.5 |
| Median household income | $72,821 |
| Median home value | $225,900 |
| Median gross rent | $781 |
| Bachelor's degree or higher | 31.4% |
| Mean commute | 15.3 min |
| Population density | 45 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.
Largest towns in Yankton County
| Town | ZIP codes | Population |
|---|---|---|
| Yankton | 1 | 15,540 |
| Gayville | 1 | 519 |
| Irene | 1 | 456 |
| Mission Hill | 1 | 200 |
| Volin | 1 | 139 |
| Lesterville | 1 | 91 |
| Utica | 1 | 68 |
Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.
Neighbouring counties
Counties that share a ZIP code with Yankton County.
Not sure you are in Yankton County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Yankton County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
57031 | Gayville , SD | Standard | 784 | $64,794 | $137,100 |
57037 | Irene , SD | Standard | 925 | $72,250 | $161,000 |
57040 | Lesterville , SD | Standard | 222 | $72,250 | $151,400 |
57046 | Mission Hill , SD | Standard | 521 | $88,583 | $227,600 |
57067 | Utica , SD | Standard | 348 | $102,941 | $326,900 |
57072 | Volin , SD | Standard | 435 | $91,750 | $169,600 |
57078 | Yankton , SD | Standard | 20,383 | $71,268 | $233,900 |
Cite this page
zipcodes.pro. “Yankton County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/sd/county/yankton
Underlying data is public domain or openly licensed — sources, vintages and licences.