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zipcodes.pro — ZIP/57661

57661

ZIP 57661 is Whitehorse, South Dakota, in Dewey County; area code 605; Mountain time.

Type
Standard
Time zone
America/Denver
County
Dewey
Metro area
none
Population
177
Coordinates
45.2665, -100.9776
☼ Live from 57661 — Whitehorse, SD

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Where 57661 is

Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.

★ Weird and wonderful facts about 57661
  • 🔢 Type 57661 into a pocket calculator and turn it upside down: IggLS — not quite a word, sorry.
  • ➕ As a number, 57,661 = 23 × 23 × 109. Its digits add up to 25, a total 2,242 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1110000100111101
  • 🏠 Its numerical neighbours: 57660 (Watauga, SD, 47 mi away) and 57701 (Rapid City, SD, 135 mi away).
  • 🔄 Backwards, 57661 becomes 16675 — and that is a real ZIP code: Saint Boniface, PA, 1,167 miles away.
  • 👥 25 other ZIP codes are made of exactly the same digits (15676, 16657, 16675, 17566, 56167, 56176, …). The farthest-flung twin is 17566 in Quarryville, PA, 1,311 miles away.
  • 🧭 Farther north than 92% of all ZIP codes, and farther west than 80%.
  • 🎯395 miles north of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 57661 and you would come out at 45.27°S, 79.02°E — 499 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 39m of daylight. Shortest: 8h 44m.
  • 📏 At 28.1 square miles of land, 57661 is bigger than 44% of ZIP codes — room for about 21 Central Parks.
🌙 The sky over 57661 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population177This ZIP177
Households56This ZIP56
Housing units56This ZIP56
Median age29.8This ZIP29.8South Dakota38.0US 38.9
Median household income$55,000This ZIP$55,000South Dakota$75,081US $80,734
Median gross rent$616This ZIP$616South Dakota$946US $1,413
Bachelor's degree or higher5.8%This ZIP5.8%
Mean commute29.7 minThis ZIP29.7 min
Population density6.3 / sq miThis ZIP6.3 / sq mi

Land area

Land area28.09 sq miThis ZIP28.09 sq mi
Water area0.19 sq miThis ZIP0.19 sq mi

Other place names in 57661

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 57661

ZIPCityDistance
57630 Glencross, SD 8.0 mi
57656 Timber Lake, SD 12.5 mi
57652 Ridgeview, SD 16.9 mi
57657 Trail City, SD 19.6 mi
57625 Eagle Butte, SD 20.0 mi
57636 Lantry, SD 27.7 mi
57633 Isabel, SD 29.5 mi
57639 Little Eagle, SD 29.7 mi
57601 Mobridge, SD 30.2 mi
57658 Wakpala, SD 34.3 mi

Find every ZIP code within 10 miles of 57661 →

Questions about this ZIP code

Where is ZIP code 57661?

57661 is in Whitehorse, South Dakota, in Dewey County. Its published point location is 45.2665, -100.9776.

What county is 57661 in?

57661 lies in Dewey County.

What area code is 57661?

Whitehorse uses area code 605, from NANPA's telephone records.

What time zone is 57661 in?

57661 uses America/Denver.

How many people live in 57661?

About 177 people live in ZIP code 57661, in 56 households, at 6.3 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What is the median household income in 57661?

$55,000 a year, against $75,081 across South Dakota.

What ZIP codes are near 57661?

The closest are 57630 (8 mi), 57656 (12.5 mi), 57652 (16.9 mi), 57657 (19.6 mi) and 57625 (20 mi).

Is 57661 a PO Box ZIP code?

57661 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “57661 ZIP Code — Whitehorse, South Dakota (Dewey County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/57661

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