Erwin, SD 57233 ZIP Code Profile

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Erwin, SD

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ZIP Code 57233: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Erwin, SD 57233

Not Acceptable, USPS
Spirit Lake, SD 57233

  • ZIP Code Type: STANDARD
  • County: Kingsbury County
  • Centroid: Latitude 44.499, Longitude -97.41
  • Time Zone: Central Time Zone (UTC -6 hours)
  • Observes DST: Yes

ZIP Code 57233 has segments in 2 Counties (Hamlin, Kingsbury).

  • Businesses Addresses: 2
  • PO Box Addresses: 0
  • Residential Addresses: 64
    • Multi-Family Addresses: 0
    • Single Family Addresses: 64

The ZIP Code maps and database are updated 4 times per year.
Database updated: February 1, 2018, Maps updated: February 1, 2018.

EXTREMELY LOCAL Demographic Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting demographic data.


57233 ZIP Code Map

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Erwin, SD 57233 Data & Demographics (As of July 1, 2017)


Total Population 146
Daytime Population: Workers 9
Daytime Population: Residents 60
Total Daytime Population (TDP) 69
Ratio TDP/Total Population1 0.47
Population in Households 146
Population in Familes 119
Population in Group Qrtrs 0
Population Density2 3
Diversity Index3 10


Median Household Income $58,216
Average Household Income $80,931
Per Capita Income $36,031


Total Housing Units 86 (100%)
Owner Occupied HU 53 (61.6%)
Renter Occupied HU 12 (14.0%)
Vacant Housing Units 21 (24.4%)
Median Home Value $88,333
Average Home Value $121,226


Total Households 65
Average Household Size 2.25
Family Households 43
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 0.19% -0.28%
Households 0.21% -0.31%
Families 0.0% -0.47%
Median Household Income   2.13%
Per Capita Income   3.75%

Erwin, SD 57233 - Peer Comparisons by Rank and Percentile

The table below compares 57233 to the other 368 ZIP Codes in South Dakota by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 322 13th
Population Density # 233 35th
Diversity Index # 260 30th
Median Household Income # 78 79th
Per Capita Income # 23 94th

Additional comparisons and rankings can be made with a VERY EASY TO USE South Dakota Census Data Comparison Tool.

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