| ZIP Code | 57031 |
|---|---|
| City | Gayville |
| State | South Dakota (SD) |
| County | Yankton County |
| Area Code | 605 |
| Elevation | 1,161 ft |
| Latitude | 42.875524 |
|---|---|
| Longitude | -97.185859 |
| Timezone | Chicago (DST) |
| FIPS | 46135 |
| ZIP Type | Standard |
| Status | Active |
Race & Ethnicity
Age Breakdown
Key Indicators
| Median Age | 43.3 yrs ↓ 2% since 2019 |
|---|---|
| Avg Household Size | 1.90 |
| Below Poverty | 1.8% ▼ 82% below avg |
| College Grads | 46.1% ▲ 19% above avg |
| Unemployment | 0.0% ▼ 100% below avg |
| No HS Diploma | 1 (0.2%) |
| HS Graduate | 128 (24.7%) |
| Some College | 65 (12.5%) |
| Associates | 85 (16.4%) |
| Bachelors | 144 (27.8%) |
| Graduate Degree | 95 (18.3%) |
Education
Housing Tenure
Home Value Distribution
Financials
| Median HH Income | $73,487 ≈ Avg ↑ 4% since 2019 |
|---|---|
| Median Home Value | $138,000 ▼ 51% below avg ↑ 4% since 2019 |
| Home/Income Ratio | 1.9x (nat avg ~3.5x) |
| Median Rent | $533/mo ↓ 15% since 2019 |
| Total Units | 379 |
| Vacant Units | 26 |
| Avg HH Size | 1.90 |
Income Distribution
How People Get to Work
Commute Time
Year Built
Summary
| Total Units | 379 |
|---|---|
| Vacant | 26 |
| Owner Occupied | 92.9% |
| Renter Occupied | 7.1% |
| Avg HH Size | 1.90 |
ZIP code 57031 is located in Gayville, South Dakota, within Yankton County. With a population of 670, this is a sparsely populated ZIP code with a middle-aged community — the median age is 43.3 years. Economically, 57031 is a solidly middle-class ZIP code: the median household income of $73,487 is near the national average.
Real estate in ZIP code 57031 represents one of the more affordable housing markets in the country. The median home value of $138,000 is well below the national average. Renters can expect to pay around $533 per month in median rent. Homeownership is strong here — 92.9% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 4% since 2019.
The population of 57031 is primarily White (91.94%). Residents are well-educated — 46.1% hold a bachelor's degree or higher, which is above the national average. Poverty affects a relatively small share of residents at 1.8%. Household income has grown by 4% since 2019.
As in most parts of the country, driving alone is the dominant commute mode at 84%.
Overall, ZIP code 57031 in Gayville, SD is characterized as solidly middle-class, well-educated, a middle-aged community, and predominantly owner-occupied. With 670 residents, a median household income of $73,487, and a median home value of $138,000, it offers a clear picture of life in this part of South Dakota.