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Data updated 2026-10-07

ZIP Code 57656 · Timber Lake, SD

Dewey County · pop 1,000 · ACS 2020–2024

The median household income in ZIP Code 57656 (Timber Lake, SD) is $66,094, higher than 31% of the other ZIP Codes in South Dakota.

01 — Where it stands

$66,094
Median household income
± $6,698 MOE
$86,300
Median home value
± $18,370 MOE
$546
Median gross rent
13.2%
Poverty rate
Percentiles for ZIP Code 57656 within Dewey County, South Dakota and the U.S.
MeasureValueCounty percentileState percentileU.S. percentile
Median household income$66,094 ± $6,698— (fewer than 5 ZIP Codes)31st percentile (140 ZIP Codes compared)37th percentile (22,922 ZIP Codes compared)
Per capita income$30,983— (fewer than 5 ZIP Codes)20th percentile (140 ZIP Codes compared)26th percentile (22,922 ZIP Codes compared)
Poverty rate13.2%— (fewer than 5 ZIP Codes)66th percentile (140 ZIP Codes compared)61st percentile (22,922 ZIP Codes compared)
Adults with a bachelor’s degree or higher23.8%— (fewer than 5 ZIP Codes)33rd percentile (140 ZIP Codes compared)45th percentile (22,922 ZIP Codes compared)
Owner-occupied homes71.4%— (fewer than 5 ZIP Codes)35th percentile (140 ZIP Codes compared)37th percentile (22,922 ZIP Codes compared)
Housing vacancy rate10.8%— (fewer than 5 ZIP Codes)45th percentile (140 ZIP Codes compared)56th percentile (22,922 ZIP Codes compared)
Median home value$86,300 ± $18,370— (fewer than 5 ZIP Codes)7th percentile (136 ZIP Codes compared)3rd percentile (22,833 ZIP Codes compared)
Median gross rent$546— (fewer than 5 ZIP Codes)2nd percentile (140 ZIP Codes compared)2nd percentile (22,865 ZIP Codes compared)
Income inequality (Gini index)0.424— (fewer than 5 ZIP Codes)51st percentile (140 ZIP Codes compared)46th percentile (22,922 ZIP Codes compared)
Average adjusted gross income per return$97,481— (fewer than 5 ZIP Codes)82nd percentile (137 ZIP Codes compared)79th percentile (22,230 ZIP Codes compared)
Returns with AGI of $200,000 or more8.3%— (fewer than 5 ZIP Codes)86th percentile (137 ZIP Codes compared)77th percentile (22,230 ZIP Codes compared)
Business establishments per 1,000 residents31.0— (fewer than 5 ZIP Codes)54th percentile (138 ZIP Codes compared)81st percentile (22,700 ZIP Codes compared)
Average annual pay per employee$39,945— (fewer than 5 ZIP Codes)20th percentile (137 ZIP Codes compared)21st percentile (22,551 ZIP Codes compared)

— = fewer than 5 ZIP Codes in the group.

Percentile groups: Dewey County · South Dakota · U.S. Hover a percentile for the number of ZIP Codes compared. MOE = 90% margin of error.

02 — Home prices

FHFA does not publish an index for this area.

03 — Nearby ZIP Codes

ZIP Code 57656 and nearby ZIP Codes
ZIPPlaceDistanceMedian household incomeMedian home valuePoverty rate5-yr HPI change
57656Timber Lake, SDthis ZIP Code$66,094$86,30013.2%—
57661Whitehorse, SD12.5 mi$55,000$87,00029.4%—
57630Glencross, SD14.2 mi$61,486$87,0000.0%—
57657Trail City, SD16.6 mi$49,573$57,10030.0%—
57633Isabel, SD20.7 mi$78,750$70,0007.6%—
57639Little Eagle, SD22.9 mi$21,250$69,40074.5%—
57621Bullhead, SD24.2 mi$32,589$69,40067.0%—

Up to six nearest ZIP Code Tabulation Areas within 30 miles, by straight-line distance between Census center points (2024 Gazetteer).

04 — Business mix

31
Establishments
145
Employees
$5.8M
Annual payroll
$39,945
Average pay per employee
Establishments by sector, ZIP Code 57656
SectorEstablishmentsShare of ZIPU.S. shareRelative concentration
Construction722.6%9.6%2.3×
Retail trade516.1%12.4%1.3×
Other services516.1%9.5%1.7×
Health care & social assistance412.9%11.9%1.1×

Counts are establishments (business locations), not jobs. Relative concentration = the sector’s share of establishments here divided by its share in the U.S. (1.0× = the same share). Average pay is shown only where at least 20 employees are reported. ZIP Code Business Patterns 2023.

05 — About this data

How percentiles are calculated

Percentiles compare this ZIP Code with other ZIP Codes in the same county, the same state and the whole country. Only ZIP Codes with their own American Community Survey estimate, a population of at least 1,000 and a published median household income are compared, and only those with a value for the measure. A percentile of 64th means the value is higher than 64% of the other ZIP Codes in that group (0 is the lowest value, 100 the highest); it describes the size of a number, not a judgment about the area. County and state percentiles are left blank when the group has fewer than 5 ZIP Codes. The number of ZIP Codes compared is shown with each percentile.

Census figures are published for ZIP Code Tabulation Areas, which approximate USPS ZIP Code delivery areas; values shown as — are not published or are suppressed by the source.

Use of this page

Area statistics only. These figures describe a ZIP Code area — not any person or household — and do not rate the area or the people who live there. CoverFi is not a consumer reporting agency; do not use this page to make decisions about credit, insurance, employment or housing.

Sources

  1. U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ZIP Code Tabulation Areas. Estimates are survey-based and have margins of error.
  2. U.S. Census Bureau, ZIP Code Business Patterns 2023 (establishment counts by NAICS sector; employment and payroll totals).
  3. Federal Housing Finance Agency, House Price Index for five-digit ZIP Codes, census tracts and counties — annual, developmental, not seasonally adjusted.
  4. IRS Statistics of Income, Individual Income Tax ZIP Code Data, tax year 2022.
  5. U.S. Census Bureau, 2024 Gazetteer Files (ZCTA locations, used for nearby ZIP Codes).
  6. HUD USPS ZIP Code Crosswalk Files (ZIP-to-tract and ZIP-to-county assignment).

This product uses Census Bureau data but is not endorsed or certified by the Census Bureau. This product uses the HUD User Data API but is not endorsed or certified by HUD User. ZIP Code Tabulation Areas are Census approximations of USPS ZIP Code delivery areas and may not match them exactly. ZIP Code is a trademark of the United States Postal Service.