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zipcodes.pro — ZIP/57645

57645

ZIP 57645 is Morristown, South Dakota, mostly in Corson County; Mountain time.

Type
Standard
Time zone
America/Denver
County
Corson +2 more
Metro area
none
Population
184
Coordinates
45.9073, -101.7164
☼ Live from 57645 — Morristown, SD

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Where 57645 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 57645
  • 🔢 Type 57645 into a pocket calculator and turn it upside down: ShgLS — not quite a word, sorry.
  • ➕ As a number, 57,645 = 3 × 3 × 3 × 5 × 7 × 61. Its digits add up to 27, a total 1,806 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1110000100101101
  • 🏠 Its numerical neighbours: 57644 (Meadow, SD, 35 mi away) and 57646 (Mound City, SD, 81 mi away).
  • 🔄 Backwards, 57645 becomes 54675, which is not a ZIP code at all.
  • 👥 32 other ZIP codes are made of exactly the same digits (45657, 45675, 46755, 47556, 54657, 54756, …). The farthest-flung twin is 45675 in Rock Camp, OH, 1,102 miles away.
  • 🧭 Farther north than 93% of all ZIP codes, and farther west than 81%.
  • 🎯449 miles north of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 57645 and you would come out at 45.91°S, 78.28°E — 444 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 44m of daylight. Shortest: 8h 39m.
  • 📏 At 302.2 square miles of land, 57645 is bigger than 95% of ZIP codes — room for about 229 Central Parks.
🌙 The sky over 57645 today
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🌋 Shake report
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Source: USGS.

People and housing

Population184This ZIP184
Households78This ZIP78
Housing units97This ZIP97
Median age47.0This ZIP47.0South Dakota38.0US 38.9
Median household income$56,667This ZIP$56,667South Dakota$75,081US $80,734
Median home value$52,100This ZIP$52,100South Dakota$257,400US $332,700
Bachelor's degree or higher25.6%This ZIP25.6%
Mean commute24.1 minThis ZIP24.1 min
Population density0.6 / sq miThis ZIP0.6 / sq mi

Land area

Land area302.17 sq miThis ZIP302.17 sq mi
Water area0.54 sq miThis ZIP0.54 sq mi

Counties 57645 spans

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

CountyShare of this ZIP
Corson County 51.9%
Grant County 26.8%
Sioux County 21.3%

Other place names in 57645

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

ZIP codes near 57645

ZIPCityDistance
57660 Watauga, SD 10.3 mi
57634 Keldron, SD 11.7 mi
57641 Mc Intosh, SD 19.5 mi
57638 Lemmon, SD 24.9 mi
58529 Carson, ND 28.2 mi
57659 Walker, SD 29.9 mi
58564 Raleigh, ND 30.5 mi
57621 Bullhead, SD 31.9 mi
57633 Isabel, SD 33.4 mi
58533 Elgin, ND 33.9 mi

Find every ZIP code within 10 miles of 57645 →

Questions about this ZIP code

Where is ZIP code 57645?

57645 is in Morristown, South Dakota, in Corson County. Its published point location is 45.9073, -101.7164.

What county is 57645 in?

57645 spans 3 counties: Corson County, Grant County and Sioux 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 time zone is 57645 in?

57645 uses America/Denver.

How many people live in 57645?

About 184 people live in ZIP code 57645, in 78 households, at 0.6 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 57645?

$56,667 a year, against $75,081 across South Dakota.

What ZIP codes are near 57645?

The closest are 57660 (10.3 mi), 57634 (11.7 mi), 57641 (19.5 mi), 57638 (24.9 mi) and 58529 (28.2 mi).

Is 57645 a PO Box ZIP code?

57645 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “57645 ZIP Code — Morristown, South Dakota (Corson County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/57645

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