Castlewood, SD · standard
ZIP Code 57223
Hamlin County, South Dakota - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 1,356
- 4/sq mi
- $92,424
- Median income
- $236,600
- Median home value
- 28.5%
- Bachelor's or higher
The verdict
Castlewood pairs an upper-quartile household income with above-median home values, in a rural, homeowner-dominated area.
- Top 25%
- household income, US ZIPs
- Top 46%
- home value, US ZIPs
- 4
- people per sq mi
- 88%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 57223 against every reporting US ZIP.
ZIP code 57223 is a sparsely populated ZIP (a standard USPS delivery area) in Castlewood, Hamlin County, South Dakota, home to just 1,356 residents across 330.7 square miles, a density of 4 people per square mile, in the Chicago time zone.
ZIP 57223 lands in the middle-income range, with a median household income of $92,424 (21% above the South Dakota average), while per-capita income is $39,865. Poverty here runs at 3.4%, with unemployment measured at 1.0%. Median home value sits at $236,600 (23% above the state average), median rent at $1,133 a month, and owner-occupancy at 87.6%.
Educational attainment sits below the national norm: 28.5% of adults hold a bachelor's degree or higher, the median age is 34.3, and the average commute is -. A geography-based comparison follows: 1 ZIP codes within about 10 miles of 57223, plus 5 more within Hamlin County, give a clearer read than the national average alone.
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 →
Top industries in ZIP 57223
Top 5 sectors by establishment count in Castlewood, SD
Which industries have the most business establishments in ZIP 57223.
- Construction
Construction
14 establishments
- Retail trade
Retail trade
6 establishments
- Finance and insurance 5
Finance and insurance
5 establishments
- Administrative and support and waste management and remediation services 4
Administrative and support and waste management and remediation services
4 establishments
- Professional, scientific, and technical services 3
Professional, scientific, and technical services
3 establishments
What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.
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 57223, Castlewood, 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
1,356
Population
330.7
Area (sq mi)
4
People / sq mi
Chicago
Time Zone
standard
ZIP Type
Who lives in ZIP 57223?
34.3
Median Age
52.1%
Male
47.9%
Female
0.4%
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?
$92,424
Median Household Income
+21% vs state
$39,865
Per Capita Income
3.4%
Poverty Rate
1.0%
Unemployment Rate
How ZIP 57223 ranks nationally
Castlewood, SD household income vs. every US ZIP code
Median household income, the full national distribution, with this ZIP marked
$92,424 Top 25% higher than 75% of 30,318 US ZIPs
Each bar is a $20K-wide band; taller bars hold more US 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?
575
Total Housing Units
510
Occupied Units
65
Vacant Units
2.80
Avg Household Size
Occupancy Type
$236,600
Median Home Value
+23% vs state
$1,133
Median Rent
1976
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 43 business establishments in ZIP 57223, employing approximately 173 people with a combined annual payroll of $8,052,000.
43
Businesses
173
Employees
$8.1M
Annual Payroll
6
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Construction | 14 | 32.6% |
| Retail trade | 6 | 13.9% |
| Finance and insurance | 5 | 11.6% |
| Administrative and support and waste management and remediation services | 4 | 9.3% |
| Professional, scientific, and technical services | 3 | 7.0% |
| Other services (except public administration) | 3 | 7.0% |
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 57223 vs 57234 →
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 57234 | Estelline, SD | 1,274 | 9.6 mi |
More ZIP Codes in Hamlin County
Related Areas
Frequently Asked Questions
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Read our methodology to see how this data is sourced, computed, and verified.