Residential delivery area · South Dakota
ZIP Code 57051: Oldham, SD
ZIP code 57051 uses the postal name Oldham, South Dakota and lies mostly in Kingsbury County (78% of its land), reaching into Miner County and Lake County (Census 2020 ZIP-county file). About 160 people live there (Census Bureau, ACS 2020-2024). Median household income is $56,250 (Census Bureau, ACS 2020-2024). By Census place, under 1% of its land lies in Oldham; more than 99% is outside any Census place.
- ACS2020-24
- Census2020
- ZBP2023
- IRS2022
- Town
- Oldham · its only residential ZIP
- County
- Kingsbury County (78%); Miner County (18%); Lake County (5%)
- Census places
- Oldham
- House district
- SD at large 119th Congress
- State
- South Dakota
- Time zone
- Central
- Land area
- 78.8 sq mi · 2 people per sq mi
Where is ZIP code 57051?
57051 centers on 44.217°, -97.351° and covers 78.8 square miles of land. It borders 6 ZIP codes: 57054, 57249, 57212, 57231, 57076, 57349.
The map draws ZIP code areas only. For the streets inside 57051, 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 57051 compare with the rest of Kingsbury County?
| Measure | 57051 | In Kingsbury County | In SD |
|---|---|---|---|
| People (ACS 2020-2024) | 163 | 7th of 9 | 322nd of 375 |
| Median household income | $56k | not ranked | not ranked |
| Median home value | $113k | not ranked | not ranked |
57051's income and home value are not ranked: it has fewer than 1,000 residents (163). Rankings use ZIP codes of 1,000 or more people living in households, with margins at most 25% of the figure.
It is denser than 6% of 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 57051?
The 2020 Census counted 248 people in 57051; the ACS, which samples households over 2020-2024, estimates 163. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 163±43 (90% margin)
- 2020 Census count
- 248
- Households
- 95
- Median age
- 60.1
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 57051?
Of the 163 people the ACS estimates in 57051, 9.2% are under 18 and 34.4% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (91.4%).
- Under 189.2%
- 18 to 6456.4%
- 65 and older34.4%
- White, not Hispanic91.4%
- Other or two or more5.5%
- Hispanic or Latino3.1%
- Black, not Hispanic0.0%
- Asian, not Hispanic0.0%
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 57051 earn?
Median household income is $56,250 (ACS 2020-2024).
- Median household income
- $56,250±$35,272
- Income per person
- $50,626
- Below the poverty line
- 8.0%
- Unemployed (of the labor force)
- 4.5%
- Adults 25+ with a bachelor's degree
- 26.4%
- Adjusted gross income per tax return, 2022
- $84,717120 returns; wages 40% 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 57051?
- Median home value (owners' estimate)
- $112,500
- Median gross rent
- –
- Homes owned by their occupants
- 95.8%
- Housing units
- 129
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001).
What businesses are in 57051?
10 business establishments had a location in this ZIP code in 2023, 4 more than in 2018 (ZIP Code Business Patterns).
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 57051?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 57054 | Ramona | 703 | $87k | 8.3 mi |
| 57249 | Lake Preston | 1,023 | $63k | 11.5 mi |
| 57212 | Arlington | 1,819 | $94k | 15.3 mi |
| 57231 | De Smet | 1,724 | $79k | 15.8 mi |
| 57076 | Winfred | 325 | $118k | 17.0 mi |
| 57349 | Howard | 1,513 | $75k | 17.3 mi |
| 57061 | Sinai | 215 | $57k | 15.3 mi (near) |
| 57050 | Nunda | 176 | $117k | 16.9 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.