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zipcodes.pro — ZIP/57657

57657

ZIP 57657 is Trail City, South Dakota, mostly in Corson County; area code 605; Mountain time.

Type
Standard
Time zone
America/Denver
County
Corson +1 more
Metro area
none
Population
247
Coordinates
45.5189, -100.7922
☼ Live from 57657 — Trail City, SD

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Where 57657 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 57657
  • 🔢 Type 57657 into a pocket calculator and turn it upside down: LSgLS — not quite a word, sorry.
  • ➕ As a number, 57,657 = 3 × 19219. Its digits add up to 30, a total 1,024 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1110000100111001
  • 🏠 Its numerical neighbours: 57656 (Timber Lake, SD, 17 mi away) and 57658 (Wakpala, SD, 15 mi away).
  • 🔄 Backwards, 57657 becomes 75675, which is not a ZIP code at all.
  • 👥 17 other ZIP codes are made of exactly the same digits (55767, 56577, 56757, 57567, 57576, 57756, …). The farthest-flung twin is 77655 in Sabine Pass, TX, 1,154 miles away.
  • 🧭 Farther north than 92% of all ZIP codes, and farther west than 80%.
  • 🎯409 miles north of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 57657 and you would come out at 45.52°S, 79.21°E — 496 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 41m of daylight. Shortest: 8h 42m.
  • 📏 At 191.2 square miles of land, 57657 is bigger than 90% of ZIP codes — room for about 145 Central Parks.
🌙 The sky over 57657 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population247This ZIP247
Households75This ZIP75
Housing units84This ZIP84
Median age38.9This ZIP38.9South Dakota38.0US 38.9
Median home value$57,100This ZIP$57,100South Dakota$257,400US $332,700
Bachelor's degree or higher14.4%This ZIP14.4%
Mean commute14.8 minThis ZIP14.8 min
Population density1.3 / sq miThis ZIP1.3 / sq mi

Land area

Land area191.21 sq miThis ZIP191.21 sq mi
Water area2.40 sq miThis ZIP2.40 sq mi

Counties 57657 spans

A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.

CountyShare of this ZIP
Corson County 77.6%
Dewey County 22.4%

ZIP codes near 57657

ZIPCityDistance
57639 Little Eagle, SD 11.1 mi
57630 Glencross, SD 13.0 mi
57658 Wakpala, SD 15.2 mi
57656 Timber Lake, SD 16.6 mi
57642 Mc Laughlin, SD 19.2 mi
57661 Whitehorse, SD 19.6 mi
57621 Bullhead, SD 22.4 mi
57601 Mobridge, SD 24.2 mi
57631 Glenham, SD 24.5 mi
57652 Ridgeview, SD 27.0 mi

Find every ZIP code within 10 miles of 57657 →

Questions about this ZIP code

Where is ZIP code 57657?

57657 is in Trail City, South Dakota, in Corson County. Its published point location is 45.5189, -100.7922.

What county is 57657 in?

57657 spans 2 counties: Corson County and Dewey County. Most of it falls in Corson County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.

What area code is 57657?

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

What time zone is 57657 in?

57657 uses America/Denver.

How many people live in 57657?

About 247 people live in ZIP code 57657, in 75 households, at 1.3 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What ZIP codes are near 57657?

The closest are 57639 (11.1 mi), 57630 (13 mi), 57658 (15.2 mi), 57656 (16.6 mi) and 57642 (19.2 mi).

Is 57657 a PO Box ZIP code?

57657 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “57657 ZIP Code — Trail City, South Dakota (Corson County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/57657

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