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zipcodes.pro — ZIP/57451

57451

ZIP 57451 is Ipswich, South Dakota, mostly in Edmunds County; area code 605; Central time.

Type
Standard
Time zone
America/Chicago
County
Edmunds +1 more
Metro area
Aberdeen, SD
Population
2,485
Coordinates
45.4378, -98.9365
☼ Live from 57451 — Ipswich, SD

Weather right now

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Local time: —

Where 57451 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 57451
  • 🔢 Type 57451 into a pocket calculator and turn it upside down: IShLS — not quite a word, sorry.
  • ➕ As a number, 57,451 = 73 × 787. Its digits add up to 22, a total 2,607 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1110000001101011
  • 🏠 Its numerical neighbours: 57450 (Hoven, SD, 46 mi away) and 57452 (Java, SD, 45 mi away).
  • 🔄 Backwards, 57451 becomes 15475 — and that is a real ZIP code: Republic, PA, 1,036 miles away.
  • 👥 25 other ZIP codes are made of exactly the same digits (14557, 14755, 15475, 15547, 15745, 15754, …). The farthest-flung twin is 17554 in Mountville, PA, 1,197 miles away.
  • 🧭 Farther north than 92% of all ZIP codes, and farther west than 78%.
  • 🎯388 miles north of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 57451 and you would come out at 45.44°S, 81.06°E — 574 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 43m.
  • 📏 At 430.2 square miles of land, 57451 is bigger than 97% of ZIP codes — room for about 327 Central Parks.
🌙 The sky over 57451 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population2,485This ZIP2,485
Households940This ZIP940
Housing units1,004This ZIP1,004
Median age41.2This ZIP41.2South Dakota38.0US 38.9
Median household income$86,000This ZIP$86,000South Dakota$75,081US $80,734
Median home value$195,700This ZIP$195,700South Dakota$257,400US $332,700
Median gross rent$1,213This ZIP$1,213South Dakota$946US $1,413
Bachelor's degree or higher31.4%This ZIP31.4%
Mean commute19.9 minThis ZIP19.9 min
Population density5.8 / sq miThis ZIP5.8 / sq mi

Business and tax activity

Business establishments60This ZIP60
Employees339This ZIP339
Annual payroll$20,466,000This ZIP$20,466,000
Tax returns filed1,200This ZIP1,200
Total adjusted gross income$113,003,000This ZIP$113,003,000

Land area

Land area430.24 sq miThis ZIP430.24 sq mi
Water area2.80 sq miThis ZIP2.80 sq mi

Counties 57451 spans

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

CountyShare of this ZIP
Edmunds County 92.5%
Brown County 7.5%

Other place names in 57451

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

ZIP codes near 57451

ZIPCityDistance
57460 Mansfield, SD 16.9 mi
57471 Roscoe, SD 18.7 mi
57435 Cresbard, SD 19.7 mi
57481 Westport, SD 19.8 mi
57456 Leola, SD 19.8 mi
57401 Aberdeen, SD 19.8 mi
57465 Northville, SD 23.8 mi
57479 Warner, SD 25.9 mi
57448 Hosmer, SD 26.9 mi
57438 Faulkton, SD 27.8 mi

Find every ZIP code within 10 miles of 57451 →

Questions about this ZIP code

Where is ZIP code 57451?

57451 is in Ipswich, South Dakota, in Edmunds County, part of the Aberdeen, SD micropolitan area. Its published point location is 45.4378, -98.9365.

What county is 57451 in?

57451 spans 2 counties: Edmunds County and Brown County. Most of it falls in Edmunds 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 57451?

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

What time zone is 57451 in?

57451 uses America/Chicago.

How many people live in 57451?

About 2,485 people live in ZIP code 57451, in 940 households, at 5.8 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 57451?

$86,000 a year, against $75,081 across South Dakota.

What ZIP codes are near 57451?

The closest are 57460 (16.9 mi), 57471 (18.7 mi), 57435 (19.7 mi), 57481 (19.8 mi) and 57456 (19.8 mi).

Is 57451 a PO Box ZIP code?

57451 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “57451 ZIP Code — Ipswich, South Dakota (Edmunds County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/57451

Machine-readable version of these facts:

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