Zip Code 57078
Yankton, South Dakota — Yankton County
📍 ZIP code 57078 is in Yankton, Yankton County, South Dakota.
ZIP code 57078 is located in Yankton, Yankton County, South Dakota. It is a zip code in the Central (CST/CDT) Time Zone with an estimated population of 20,547. The area code for ZIP code 57078 is 605.
Quick Answer
Zip code 57078 is in Yankton, South Dakota (Yankton County). It has a population of 20,547, median household income of $72,395, and median home value of $213,300.
Population
20,547
Income
$72,395
Home Value
$213,300
Climate
87°F / 10°F
About Zip Code 57078
Zip code 57078 is located in Yankton, South Dakota, within Yankton County. Home to approximately 20,547 residents, this area sits at an elevation of 1347 ft and falls within the Central (CST/CDT) timezone. The local area code is 605.
The median household income is $72,395 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $213,300, and the cost of living index is 78 (22% below the national average of 100).
Summers average a high of 87°F while winters drop to 10°F. The area receives about 29 in of rain and 38 in of snow annually. The zip code covers 111.6 square miles of land area and 4.7 square miles of water.
Key Statistics
20,547
$72,395
$213,300
Central (CST/CDT)
605
1347 ft
111.6 sq mi
42.3
9,172
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Compare With Nearby Zip Codes
| Metric | 57078 | 57046 | 57067 | 68730 | 68774 | 57063 |
|---|---|---|---|---|---|---|
| City | Yankton, SD | Mission Hill, SD | Utica, SD | Crofton, NE | Hartington, NE | Tabor, SD |
| Population | 20,547 | 524 | 314 | 2,112 | 336 | 814 |
| Median Income | $72,395 | $95,574 | $101,513 | $77,407 | $66,667 | $82,750 |
| Home Value | $213,300 | $260,000 | $215,900 | $182,600 | $208,200 | $152,200 |
| Cost of Living | 78 | 87 | 95 | 80 | 78 | 76 |
| Median Age | 42.3 | 41.4 | 40.4 | 44.9 | 44.7 | 53.3 |
Cost of Living
100 = National Average. Yankton's cost of living is 22% below the national average.
vs. State Avg
Below
Affordability
Very Affordable
Income-to-Home
2.9x
Demographics
Zip code 57078 has a population of 20,547 people with a median age of 42.3. There are 9,172 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Yankton (57078) population trend from 2010 to 2024
↓ -37.6%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
87°F
10°F
29 in
38 in
Yankton experiences warm summers with average highs around 87°F. Winters are cold with lows averaging 10°F. With 38 in of annual snowfall, residents should be prepared for significant winter weather.
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Housing & Economy
Median Home Value
$213,300
Median Household Income
$72,395
With 9,172 housing units across 111.6 square miles, 57078 has a housing density of 82 units per square mile. The home price-to-income ratio is 2.9x.
Location & Geography
Latitude
42.9156°
Longitude
-97.4467°
Land Area
111.6 sq mi
Water Area
4.7 sq mi
Nearby Zip Codes
Zip codes closest to 57078 (Yankton, SD) with distances:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 57078's $72,395. A way to compare Yankton to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 57078 (Yankton, SD). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Yankton, South Dakota?
Yankton, South Dakota uses zip code 57078.
What county is zip code 57078 in?
Zip code 57078 is located in Yankton County, South Dakota.
What is the population of zip code 57078?
The population of zip code 57078 is 20,547 with a median age of 42.3.
Is 57078 in Yankton, South Dakota?
Yes, zip code 57078 is in Yankton, Yankton County, South Dakota. The area code is 605.
Frequently Asked Questions
What city is zip code 57078 in?
Zip code 57078 is in Yankton, South Dakota. It is part of Yankton County and uses the Central (CST/CDT) timezone.
What is zip code 57078?
Zip code 57078 is a U.S. postal code in Yankton, South Dakota (Yankton County). It has a population of 20,547 and covers 111.6 square miles.
What is the population of zip code 57078?
The population of zip code 57078 (Yankton, SD) is 20,547 with a median age of 42.3. There are approximately 9,172 housing units in this area.
What is the median income in zip code 57078?
The median household income in zip code 57078 (Yankton, SD) is $72,395 per year. The cost of living index is 78 (100 = national average).
What is the average home price in zip code 57078?
The median home value in zip code 57078 (Yankton, SD) is $213,300. The cost of living index is 78 compared to the national average of 100.
What county is zip code 57078 in?
Zip code 57078 is located in Yankton County, South Dakota. The primary city is Yankton.
What is the area code for zip code 57078?
Zip code 57078 in Yankton, SD uses area code 605. It is located in the Central (CST/CDT) timezone.
Is zip code 57078 a good place to live?
Zip code 57078 (Yankton, SD) has a cost of living index of 78 (100 = national average), a median household income of $72,395, and median home values of $213,300. The median age is 42.3. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 57078?
The cost of living index for zip code 57078 (Yankton, SD) is 78, where 100 represents the national average. This area is below the national average. Median home value: $213,300.
What schools serve zip code 57078?
Zip code 57078 in Yankton, South Dakota is served by the local school district of Yankton County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.