Richest South Dakota Zip Codes (2024)
by Kristen Carney 
Updated: July 18, 2024
The richest zip code in South Dakota is 57075 with an average household income of $213,977 and 1,115 people according to the most current Census data available (citation).
10 Richest South Dakota Zip Codes
per the most current (2022) Census data with at least 500 people and a reasonable margin of error
| Rank | Zip Code | Population | Mean Income | Median Household Income |
|---|---|---|---|---|
| 1 | 57075 | 1,115 | $213,977 | $102,125 |
| 2 | 57015 | 846 | $155,366 | $112,813 |
| 3 | 57479 | 599 | $151,237 | $92,361 |
| 4 | 57020 | 1,885 | $142,676 | $114,667 |
| 5 | 57055 | 1,200 | $138,844 | $101,458 |
| 6 | 57049 | 7,661 | $135,206 | $88,948 |
| 7 | 57108 | 31,255 | $132,746 | $93,630 |
| 8 | 57005 | 12,169 | $126,244 | $105,618 |
| 9 | 57038 | 1,577 | $123,342 | $84,083 |
| 10 | 57312 | 673 | $121,592 | $85,208 |
To identify the richest zip codes in South Dakota, we downloaded the most current income data from the US Census Bureau, excluded zips with fewer than 500 people, excluded the zips with margins of error greater than 50% of the income estimate and sorted by mean income. Click on the links above in the chart to see more income statistics for these wealthy South Dakota zips codes or learn more about the highest income zip codes in the US.
South Dakota Income Statistics
The following data are the most current income statistics for South Dakota from the US Census Bureau, are in 2022 inflation adjusted dollars and are from the American Community Survey 2022 5-year estimates.
- Median Household Income: $69,457.
- Average Household Income: $90,706.
- Per Capita Income: $36,850.
- 6.5% of Households in South Dakota are High Income Households that make over $200,000 a year.
Median Household Income in South Dakota by Age of Householder
| South Dakota | |
|---|---|
| Householder under 25 years | $39,841 |
| Householder 25 to 44 years | $78,360 |
| Householder 45 to 64 years | $84,713 |
| Householder 65 years and over | $51,181 |
Median Income versus Average Income: Which Should You Use?
We usually suggest using median income data – either instead of or in addition to – average income data as a true indicator of wealth. If you haven’t thought about median versus average since your last standardized test, you aren’t alone. Here’s what they are:
- average is the sum of a set of numbers divided by the count of numbers in the set
- median is the middle number in the set of numbers
Now let’s say you had the following simplified set of income data.
Household 1: $30,000
Household 2: $50,000
Household 3: $1,000,000
The average income for this set is $360,000. The outlier data point ($1,000,000) skews the average WAY up. Conversely, the average income would be skewed WAY down if someone had an income of $500. The median income for the same data set is $50,000. Outlier data doesn’t skew the median.
Most Business Owners Should Use Median Income
So most business owners should use the median income as a true indicator of wealth, because it provides a more accurate representation of a typical income, especially in areas with significant income disparity.
When Should You Use Average Income
If your target market is high-income households, the average income may be more relevant. This is because the average income can highlight the presence of a higher concentration of wealthy individuals, which is beneficial for luxury goods and services marketing. We’re using average income on this page because using the Census’s highest reported median value of $250,001 could result in multiple ties for the richest geography.
Why do so many zip codes have a median value of $250,001?
The Census' American Community Survey uses $250,000+ as a jam value for median income estimates to protect privacy, ensure data consistency, and simplify reporting. A "jam value" in survey data refers to a placeholder or default value used when actual data points are unavailable, incomplete, or exceed certain thresholds. We represent this jam value as $250,001 to make it easy for you to sort.
About the Data
Sources & Margins of Error
All statistics for South Dakota are the most current, comparable statistics available from the US Census Bureau and are from the American Community Survey 2022 5-year estimates. The income values are in 2022 inflation-adjusted dollars and were downloaded on 7 December 2023.
The following data tables were used:
- B01001 Sex By Age
- B19001 Household Income in the Past 12 Months (in 2022 inflation adjusted dollars)
- B19013 Median Household Income in the Past 12 months (in 2022 inflation-adjusted dollars)
- B19301 Per Capita Income in the Past 12 months (in 2022 inflation-adjusted dollars)
- S1902 Mean Income in the Past 12 months (in 2022 inflation-adjusted dollars)
- B19049 Median Household Income In The Past 12 Months (in 2022 Inflation-adjusted dollars) By Age Of Householder
Margins of error for the income data for South Dakota
- Median Household Income: +/-$788
- Average Household Income: +/-$1,060
- Per Capita Income: +/-$445
- High Income Households: +/-0.3%
- Median Household Income: Householders under 25: +/-$2,453
- Median Household Income: Householders 25 to 44: +/-$1,144
- Median Household Income: Householders 45 to 64: +/-$1,531
- Median Household Income: Householders 65+: +/-$1,044
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