Ralph, SD 57650 ZIP Code Profile

Related Place Profiles:
Ralph, SD

ZIP Code 57650: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Ralph, SD 57650

  • ZIP Code Type: STANDARD
  • County: Harding County
  • Centroid: Latitude 45.855, Longitude -103.034
  • Time Zone: Mountain Time Zone (UTC -7 hours)
  • Observes DST: Yes
  • Businesses Addresses: 0
  • PO Box Addresses: 0
  • Residential Addresses: 15
    • Multi-Family Addresses: 0
    • Single Family Addresses: 15

The ZIP Code maps and database are updated 4 times per year.
Database updated: May 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.


57650 ZIP Code Map

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Ralph, SD 57650 Data & Demographics (As of July 1, 2017)


Total Population 76
Daytime Population: Workers 27
Daytime Population: Residents 38
Total Daytime Population (TDP) 65
Ratio TDP/Total Population1 0.86
Population in Households 74
Population in Familes 60
Population in Group Qrtrs 2
Population Density2 1
Diversity Index3 10


Median Household Income $41,473
Average Household Income $63,607
Per Capita Income $26,236


Total Housing Units 47 (100%)
Owner Occupied HU 23 (48.9%)
Renter Occupied HU 8 (17.0%)
Vacant Housing Units 16 (34.0%)
Median Home Value $89,286
Average Home Value $179,348


Total Households 31
Average Household Size 2.39
Family Households 19
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 0.18% 0.0%
Households 0.45% 0.0%
Families 0.0% 0.0%
Median Household Income   4.53%
Per Capita Income   3.96%

Ralph, SD 57650 - Peer Comparisons by Rank and Percentile

The table below compares 57650 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 # 353 4th
Population Density # 354 3rd
Diversity Index # 262 29th
Median Household Income # 309 16th
Per Capita Income # 244 34th

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

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