Westport, SD 57481 ZIP Code Profile

Related Place Profiles:
Westport, SD

ZIP Code 57481: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Westport, SD 57481

Acceptable Alternative
Wetonka, SD 57481

  • ZIP Code Type: STANDARD
  • County: Brown County
  • Centroid: Latitude 45.627, Longitude -98.613
  • Time Zone: Central Time Zone (UTC -6 hours)
  • Observes DST: Yes

ZIP Code 57481 has segments in 3 Counties (Brown, Edmunds, McPherson).

  • Businesses Addresses: 6
  • PO Box Addresses: 48
  • Residential Addresses: 135
    • Multi-Family Addresses: 0
    • Single Family Addresses: 135

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.


57481 ZIP Code Map

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Westport, SD 57481 Data & Demographics (As of July 1, 2017)


Total Population 659
Daytime Population: Workers 255
Daytime Population: Residents 321
Total Daytime Population (TDP) 576
Ratio TDP/Total Population1 0.87
Population in Households 615
Population in Familes 528
Population in Group Qrtrs 44
Population Density2 3
Diversity Index3 12


Median Household Income $71,287
Average Household Income $81,240
Per Capita Income $25,481


Total Housing Units 224 (100%)
Owner Occupied HU 175 (78.1%)
Renter Occupied HU 25 (11.2%)
Vacant Housing Units 24 (10.7%)
Median Home Value $175,893
Average Home Value $208,857


Total Households 200
Average Household Size 3.08
Family Households 148
Average Family Size 4
  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 0.32% 0.57%
Households 0.93% 0.88%
Families 0.77% 0.93%
Median Household Income   1.63%
Per Capita Income   2.94%

Westport, SD 57481 - Peer Comparisons by Rank and Percentile

The table below compares 57481 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 # 183 51st
Population Density # 241 34th
Diversity Index # 227 39th
Median Household Income # 19 95th
Per Capita Income # 262 29th

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

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