Hill City, SD 57745 ZIP Code Profile

Related Place Profiles:
Deerfield, SD | Hill City, SD | Mystic, SD | Rochford, SD

ZIP Code 57745: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Hill City, SD 57745

Acceptable Alternative
Rochford, SD 57745

Not Acceptable, USPS
Deerfield, SD 57745
Mystic, SD 57745

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  • ZIP Code Type: STANDARD
  • County: Pennington County
  • Centroid: Latitude 44.124, Longitude -103.72
  • Time Zone: Mountain Time Zone (UTC -7 hours)
  • Observes DST: Yes
  • Businesses Addresses: 184
  • PO Box Addresses: 495
  • Residential Addresses: 629
    • Multi-Family Addresses: 24
    • Single Family Addresses: 605

The ZIP Code maps and database are updated 4 times per year.
Database updated: July 1, 2021, Maps updated: May 5, 2021.


Hill City, SD 57745 Data & Demographics (As of July 1, 2021)


Total Population 2,558 (100%)
Population in Households 2,558 (100.0%)
Population in Families 2,060 (80.5%)
Population in Group Quarters1 0
Population Density 5
Diversity Index2 41


Median Household Income $59,958
Average Household Income $78,775
% of Income for Mortgage4 23%
Per Capita Income $34,398
Wealth Index5 92


Total HU (Housing Units) 1,893 (100%)
Owner Occupied HU 918 (48.5%)
Renter Occupied HU 199 (10.5%)
Vacant Housing Units 776 (41.0%)
Median Home Value $325,735
Average Home Value $380,719
Housing Affordability Index3 110


Total Households 1,117
Average Household Size 2.29
Family Households 735
Average Family Size 3
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. 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 races 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.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.


2010-2021 2021-2026
Population 1.33% 1.57%
Households 1.41% 1.61%
Families 1.15% 1.43%
Median Household Income   2.73%
Per Capita Income   3.4%
Owner Occupied HU   1.97%

Hill City, SD 57745 - Peer Comparisons by Rank and Percentile

The table below compares 57745 to the other 370 ZIP Codes in South Dakota by rank and percentile using July 1, 2021 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 # 54 86th
Population Density # 178 52nd
Median Household Income # 193 48th
Housing Affordability Index # 51 14th
Per Capita Income # 127 66th
Diversity Index # 54 86th

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

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