ZIP Code 57470
standardRockham · Faulk County · South Dakota
ZIP code 57470 in Rockham, South Dakota has a population of 143. The median household income is $108,281, which is 42% above the national average. Median home value is $201,400, 28% below the US average. 22.4% of residents hold a bachelor's degree or higher.
ZIP code 57470 is classified by USPS as a standard delivery area and covers roughly 357.5 square miles in Rockham, Faulk County, South Dakota. The area is home to 143 residents, producing a population density of 0 people per square mile, and falls within the Chicago time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 57470 against South Dakota and the nation.
On the economic side, the median household income for ZIP 57470 sits at $108,281 (41% above the South Dakota average), while per-capita income is $22,864. The poverty rate stands at 59.1% and the unemployment rate at 1.1%. On housing, the median home value is $201,400 (5% above the state average) with median rent at — per month, and 100.0% of occupied units are owner-occupied — a direct signal of whether 57470 behaves more like a homeowner neighborhood or a renter-heavy ZIP.
Education and household profile round out the picture: 22.4% of adults hold a bachelor's degree or higher, the median age is 13.6, and the average commute is —. Use the benchmarks above to see where 57470 sits relative to South Dakota and the national baseline rather than viewing the numbers in isolation. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data — no estimates, no proprietary scoring. Verify with HUD →
Source: U.S. Census Bureau — American Community Survey 5-Year Estimates + ZIP Code Business Patterns + HUD FMR + FHFA HPI ACS demographics, ZBP business establishments, HUD Fair Market Rents, FHFA HPI for ZIP 57470, Rockham, SD · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; HUD FMR + FHFA HPI updated quarterly/annually.
Quick Facts
143
Population
357.5
Area (sq mi)
0
People / sq mi
Chicago
Time Zone
standard
ZIP Type
Demographics
13.6
Median Age
54.5%
Male
45.5%
Female
0.0%
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)
Income & Employment
$108,281
Median Household Income
+41% vs state
$22,864
Per Capita Income
59.1%
Poverty Rate
1.1%
Unemployment Rate
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
Education
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
Housing
79
Total Housing Units
55
Occupied Units
24
Vacant Units
4.40
Avg Household Size
Occupancy Type
$201,400
Median Home Value
+5% vs state
1971
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
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Frequently Asked Questions
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Research Rockham, SD on Other Data Sources
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Source: U.S. Census Bureau, ACS 5-Year Estimates (2023). Business data: Source: Census ZIP Code Business Patterns (ZBP) 2023. Home value trends: Source: FHFA House Price Index (HPI), Five-Digit ZIP Codes.
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Read our methodology — how this data is sourced, computed, and verified.