Residential delivery area · South Dakota
ZIP Code 57078: Yankton, SD
ZIP code 57078 uses the postal name Yankton, South Dakota and lies entirely in Yankton County (Census 2020 ZIP-county file). About 20,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $71,268 (Census Bureau, ACS 2020-2024). By Census place, 8% of its land lies in Yankton; 92% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Yankton · its only residential ZIP
- County
- Yankton County
- Census places
- Yankton
- Micro area
- Yankton, SD
- House district
- SD at large 119th Congress
- State
- South Dakota
- Time zone
- Central
- Land area
- 111.3 sq mi · 183 people per sq mi
Where is ZIP code 57078?
57078 centers on 42.916°, -97.447° and covers 111.3 square miles of land plus 8.4 of water. It borders 6 ZIP codes: 57046, 57067, 68730, 68774, 57063, 57040.
The map draws ZIP code areas only. For the streets inside 57078, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 57078 compare with the rest of Yankton County?
| Measure | 57078 | In Yankton County | In SD |
|---|---|---|---|
| People (ACS 2020-2024) | 20,383 | 1st of 10 | 12th of 375 |
| Median household income | $71k | 2nd of 3 | 69th of 107 |
| Median home value | $234k | 1st of 3 | 53rd of 109 |
Its median household income is higher than in 49% of U.S. residential ZIP codes, and it is denser than 62% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 57078?
The 2020 Census counted 20,104 people in 57078; the ACS, which samples households over 2020-2024, estimates 20,383. Between the 2010 and 2020 censuses its population grew 5.1% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 20,383
- 2020 Census count
- 20,104+5.1% since 2010 (19,121)
- Households
- 8,406
- Median age
- 42.7
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 57078?
Of the 20,383 people the ACS estimates in 57078, 20.7% are under 18 and 21.9% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (86.0%).
- Under 1820.7%
- 18 to 6457.4%
- 65 and older21.9%
- White, not Hispanic86.0%
- Hispanic or Latino6.4%
- Other or two or more5.5%
- Black, not Hispanic1.8%
- Asian, not Hispanic0.4%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 57078 earn?
Median household income is $71,268 (ACS 2020-2024), the 2nd highest of the 3 ranked ZIP codes in Yankton County. It is not measurably different from 2015-2019 ($68,227 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $71,268±$8,448
- Income per person
- $41,500
- Below the poverty line
- 12.7%
- Unemployed (of the labor force)
- 1.6%
- Adults 25+ with a bachelor's degree
- 33.1%
- Adjusted gross income per tax return, 2022
- $79,5169,470 returns; wages 63% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 57078?
FHFA's house price index for 57078, built from repeat sales and appraisals of the same homes, rose 69% from 2015 to 2025 and rose 45% from 2020 to 2025, and moved +2.4% in 2025.
- Median home value (owners' estimate)
- $233,900
- Median gross rent
- $788
- Homes owned by their occupants
- 70.7%
- Housing units
- 9,210
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 57078?
665 business establishments had a location in this ZIP code in 2023, the same count as in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade101
- Accommodation and food services77
- Health care and social assistance73
- Construction69
- Other services (except public administration)65
- Finance and insurance44
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 57078?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 57046 | Mission Hill | 521 | $89k | 7.7 mi |
| 57067 | Utica | 348 | $103k | 9.0 mi |
| 68730 | Crofton, NE | 2,156 | $77k | 11.2 mi |
| 68774 | Saint Helena, NE | 238 | $86k | 11.3 mi |
| 57063 | Tabor | 882 | $93k | 12.1 mi |
| 57040 | Lesterville | 222 | $72k | 12.3 mi |
| 68736 | Fordyce, NE | 525 | $84k | 12.4 mi (near) |
| 57072 | Volin | 435 | $92k | 13.2 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.