ZIP Code 57331 - Dimock South Dakota
Overview
ZIP Code 57331 is located in Dimock South Dakota. Portions of 57331 are also in Starr Township and Cross Plains Township and Washington Township (Douglas County) and Dimock (town) and Rome Township (Davison County). 57331 is primarily within Hutchinson County, with some portions in Douglas County. Regionally, 57331 is located in the Sioux Falls Area.
ZIP Code 57331 Quick Stats
| ZIP Code Name | Dimock |
| Primary County | Hutchinson County |
| ZIP Code Type | Standard |
| Population (2022) | 237 |
| Area Code(s) | 605 |
| Current Time | CDT |
ZIP Code 57331 Map
57331 Demographics
57331 can be classified socioeconomically as Middle Class class compared to other ZIP Codes in South Dakota based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 57331 is White. The current unemployment level in 57331 is 2.2%.
| Population | 237 |
| Population Growth Rate | -14.7% |
| Population Density | 4 People per Square Mile |
| Total Households | 258 |
| Percentage High Income Households | 10.5% |
| Median Household Income (2021) | $91,667 |
| Average Adjusted Gross Income (2021) | $175,940 |
| Current Unemployment Rate (May 2026) | 2.2% |
| Sales Tax Rate (2025) | 6.2% |
| Majority Race/Ethnicity | White - 100% |
57331 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 383 | 100% |
| Black | 0 | 0% |
| Hispanic | 0 | 0% |
| Asian | 0 | 0% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 0 | 0% |
57331 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 17 | 4.5% |
| Bachelor Degree | 74 | 19.58% |
| High School Diploma | 134 | 35.45% |
| No High School Diploma | 0 | 0% |
| GED or Alternate | 0 | 0% |
| 1 or More Years of College | 29 | 7.67% |
| Associates Degree | 87 | 23.02% |
| Masters Degree | 33 | 8.73% |
| Professional Degree | 4 | 1.06% |
| Doctorate Degree | 0 | 0% |
57331 Geography
| Coordinates | 43.46930313, -98.03289032 |
| Adjacent ZIP Codes | |
| Cities/Towns in 57331 | |
| Region | Sioux Falls Area |
| Time Zone | Central Daylight Time |
| IANA Timezone | America/Chicago |
| Area | 65 Square Miles |
57331 Schools
| School Districts in 57331 |
57331 Weather and Climate Data
| Plant Hardiness Zone | Zone 4b: -25F to -20F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average First Frost Date | October 1 - 10 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average Last Frost Date | May 1 - 10 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Koppen-Geiger Climate Zone | Dfa - Humid Continental Hot Summers | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ecoregion | 46n - James River Lowland | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||