Oldham, SD · standard
ZIP Code 57051
Kingsbury County, South Dakota - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 263
- 2/sq mi Low-density area
- $56,250
- Median income Below-median income area
- $112,500
- Median home value Below-median home value
- 26.4%
- Bachelor's or higher Near-average bachelor's attainment
National ZIP placement
Oldham pairs one of the lowest household incomes in the country with among the most affordable home values nationally, in a rural, homeowner-dominated area.
- 23rd pct
- household income, US ZIPs
- 14th pct
- home value, US ZIPs
- 2
- people per sq mi
- 96%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 57051 against every reporting US ZIP.
ZIP code 57051 is a sparsely populated ZIP (a standard USPS delivery area) in Oldham, Kingsbury County, South Dakota, home to just 263 residents across 164.4 square miles, a density of 2 people per square mile, in the Chicago time zone.
ZIP 57051 reports a modest median household income of $56,250 (27% below the average South Dakota ZIP), while per-capita income is $50,626. The poverty rate is 8.0%, with unemployment at 4.5%; those measures add context to the income figure. Home values sit below the statewide ZIP benchmark: the median is $112,500 (41% below the average South Dakota ZIP); owner occupancy is 95.8%.
Educational attainment sits below the national norm: 26.4% of adults hold a bachelor's degree or higher, the median age is 60.1, and the average commute is -. The page also surfaces 2 ZIP codes within roughly 10 miles and 6 more in Kingsbury County, so 57051 can be compared with both its immediate and county-level context.
Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 57051, Oldham, SD · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.
Quick Facts
263
Population
164.4
Area (sq mi)
2
People / sq mi
Chicago
Time Zone
standard
ZIP Type
Who lives in ZIP 57051?
60.1
Median Age
51.5%
Male
48.5%
Female
1.2%
Foreign-Born
Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How much do residents earn?
$56,250
Median Household Income
-27% vs state ZIP avg
$50,626
Per Capita Income
8.0%
Poverty Rate
4.5%
Unemployment Rate
How ZIP 57051 ranks among South Dakota ZIPs
Oldham, SD household income vs. every South Dakota ZIP code
Median household income among 337 reporting South Dakota ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$56,250 15th percentile higher than 15% of 337 South Dakota ZIPs
Each bar is a $20K-wide band; taller bars hold more South Dakota ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
129housing units
129
Total Housing Units
95
Occupied Units
34
Vacant Units
1.72
Avg Household Size
Occupancy Type
$112,500
Median Home Value
-41% vs state ZIP avg
1938
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 10 business establishments in ZIP 57051, employing approximately 52 people with a combined annual payroll of $2,188,000.
10
Businesses
52
Employees
$2.2M
Annual Payroll
0
Industry Sectors
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nearby ZIP Codes
Want a side-by-side? Compare 57051 vs 57249 →
ZIP 57051 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 57249
Lake Preston (57249)
994 residents
- 57054
Ramona (57054)
502 residents
- 57051 263
Oldham (57051)
263 residents
What this shows Among its immediate neighbors, ZIP 57051 ranks #3 by population - useful context the national average alone can't give.
ZIP 57051 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 57054
Ramona (57054)
$86,875 median income
- 57249
Lake Preston (57249)
$63,182 median income
- 57051
Oldham (57051)
$56,250 median income
What this shows By household income, ZIP 57051 ranks #3 of 3 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 57051, both outside SD so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Kingsbury County
Related Areas
Frequently Asked Questions
What county is ZIP code 57051 in?
ZIP code 57051 (Oldham) is located in Kingsbury County, South Dakota. Kingsbury County contains multiple ZIP codes, see the full list at /counties/kingsbury-sd.
What is the population of ZIP code 57051?
ZIP code 57051 in Oldham, SD has a population of 263 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 57051?
The median household income in ZIP 57051 is $56,250, which is 26% below the national average of $76,288.
What is the average home value in ZIP 57051?
The median home value in ZIP 57051 is $112,500, which is 60% below the national average of $278,155.
What is the demographic makeup of ZIP 57051?
The largest racial group in ZIP 57051 is White at 91.4%. Hispanic or Latino residents make up 3.1% of the population.
How many businesses are in ZIP code 57051?
ZIP code 57051 has 10 business establishments employing approximately 52 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 57051?
In ZIP code 57051, 57.9% of residents aged 25+ have a high school diploma or higher, and 26.4% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 57051?
In ZIP code 57051, approximately 95.8% of occupied housing units are owner-occupied and 4.2% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 57051?
The poverty rate in ZIP code 57051 is 8.0% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.
Related
Take this with you
What to do with ZIP 57051's numbers, next.
- See how ZIP 57051 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Oldham, SD ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.