Isabel, SD · standard
ZIP Code 57633
Dewey County, South Dakota - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 414
- 0/sq mi Low-density area
- $78,750
- Median income Near-median income area
- $70,000
- Median home value Below-median home value
- 20.9%
- Bachelor's or higher Near-average bachelor's attainment
National ZIP placement
Isabel pairs an above-median household income with among the most affordable home values nationally, in a rural, homeowner-dominated area.
- Top 40%
- household income, US ZIPs
- 3rd pct
- home value, US ZIPs
- 0
- people per sq mi
- 77%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 57633 against every reporting US ZIP.
ZIP code 57633 is a sparsely populated ZIP (a standard USPS delivery area) in Isabel, Dewey County, South Dakota, home to just 414 residents across 2070.0 square miles, a density of 0 people per square mile, in the Denver time zone.
ZIP 57633 lands in the middle-income range, with a median household income of $78,750 (3% above the average South Dakota ZIP), while per-capita income is $37,567. The poverty rate is 7.6%, with unemployment at 6.8%; those measures add context to the income figure. Home values sit below the statewide ZIP benchmark: the median is $70,000 (64% below the average South Dakota ZIP), and median rent is $818; owner occupancy is 76.5%.
Educational attainment sits below the national norm: 20.9% of adults hold a bachelor's degree or higher, the median age is 36.5, and the average commute is -. No nearby ZIP peer set is available for this delivery area, so the South Dakota and national benchmarks above are the appropriate context for 57633.
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 57633, Isabel, 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
414
Population
2070.0
Area (sq mi)
0
People / sq mi
Denver
Time Zone
standard
ZIP Type
Who lives in ZIP 57633?
36.5
Median Age
49.7%
Male
50.3%
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?
$78,750
Median Household Income
+3% vs state ZIP avg
$37,567
Per Capita Income
7.6%
Poverty Rate
6.8%
Unemployment Rate
How ZIP 57633 ranks among South Dakota ZIPs
Isabel, 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)
$78,750 Top 40% higher than 60% 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
209housing units
209
Total Housing Units
183
Occupied Units
26
Vacant Units
2.43
Avg Household Size
Occupancy Type
$70,000
Median Home Value
-64% vs state ZIP avg
$818
Median Rent
1973
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 19 business establishments in ZIP 57633, employing approximately 99 people with a combined annual payroll of $4,225,000.
19
Businesses
99
Employees
$4.2M
Annual Payroll
2
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Wholesale trade | 4 | 21.1% |
| Accommodation and food services | 4 | 21.1% |
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 57633, 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 Dewey County
Related Areas
Frequently Asked Questions
What county is ZIP code 57633 in?
ZIP code 57633 (Isabel) is located in Dewey County, South Dakota. Dewey County contains multiple ZIP codes, see the full list at /counties/dewey-sd.
What is the population of ZIP code 57633?
ZIP code 57633 in Isabel, SD has a population of 414 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 57633?
The median household income in ZIP 57633 is $78,750, which is 3% above the national average of $76,288.
What is the average home value in ZIP 57633?
The median home value in ZIP 57633 is $70,000, which is 75% below the national average of $278,155.
What is the demographic makeup of ZIP 57633?
The largest racial group in ZIP 57633 is White at 74.4%.
How many businesses are in ZIP code 57633?
ZIP code 57633 has 19 business establishments employing approximately 99 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 57633?
In ZIP code 57633, 52.2% of residents aged 25+ have a high school diploma or higher, and 20.9% 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 57633?
In ZIP code 57633, approximately 76.5% of occupied housing units are owner-occupied and 23.5% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 57633?
The poverty rate in ZIP code 57633 is 7.6% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.
Related
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What to do with ZIP 57633's numbers, next.
- See how ZIP 57633 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Isabel, SD ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
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ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.