Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — ZIP/57368

57368

ZIP 57368 is Plankinton, South Dakota, in Aurora County; area code 605; Central time.

Type
Standard
Time zone
America/Chicago
County
Aurora
Metro area
none
Population
1,068
Coordinates
43.7495, -98.4721
☼ Live from 57368 — Plankinton, SD

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 57368 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 57368
  • 🔢 Type 57368 into a pocket calculator and turn it upside down: BgELS — not quite a word, sorry.
  • ➕ As a number, 57,368 = 2 × 2 × 2 × 71 × 101. Its digits add up to 29, a total 1,296 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1110000000011000
  • 🏠 Its numerical neighbours: 57367 (Pickstown, SD, 47 mi away) and 57369 (Platte, SD, 33 mi away).
  • 🔄 Backwards, 57368 becomes 86375, which is not a ZIP code at all.
  • 👥 53 other ZIP codes are made of exactly the same digits (35768, 36578, 36587, 36758, 36785, 36875, …). The farthest-flung twin is 78536 in Delmita, TX, 1,182 miles away.
  • 🧭 Farther north than 86% of all ZIP codes, and farther west than 78%.
  • 🎯271 miles north of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 57368 and you would come out at 43.75°S, 81.53°E — 661 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 27m of daylight. Shortest: 8h 55m.
  • 📏 At 232.2 square miles of land, 57368 is bigger than 92% of ZIP codes — room for about 176 Central Parks.
🌙 The sky over 57368 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population1,068This ZIP1,068
Households418This ZIP418
Housing units489This ZIP489
Median age39.8This ZIP39.8South Dakota38.0US 38.9
Median household income$74,688This ZIP$74,688South Dakota$75,081US $80,734
Median home value$202,700This ZIP$202,700South Dakota$257,400US $332,700
Median gross rent$940This ZIP$940South Dakota$946US $1,413
Bachelor's degree or higher27.7%This ZIP27.7%
Mean commute21.1 minThis ZIP21.1 min
Population density4.6 / sq miThis ZIP4.6 / sq mi

Business and tax activity

Business establishments38This ZIP38
Employees335This ZIP335
Annual payroll$13,171,000This ZIP$13,171,000
Tax returns filed570This ZIP570
Total adjusted gross income$36,271,000This ZIP$36,271,000

Land area

Land area232.20 sq miThis ZIP232.20 sq mi
Water area0.40 sq miThis ZIP0.40 sq mi

Other place names in 57368

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

ZIP codes near 57368

ZIPCityDistance
57363 Mount Vernon, SD 11.8 mi
57383 White Lake, SD 12.2 mi
57375 Stickney, SD 13.3 mi
57359 Letcher, SD 19.0 mi
57328 Corsica, SD 21.6 mi
57301 Mitchell, SD 21.7 mi
57344 Harrison, SD 22.0 mi
57385 Woonsocket, SD 22.2 mi
57358 Lane, SD 22.6 mi
57364 New Holland, SD 23.0 mi

Find every ZIP code within 10 miles of 57368 →

Questions about this ZIP code

Where is ZIP code 57368?

57368 is in Plankinton, South Dakota, in Aurora County. Its published point location is 43.7495, -98.4721.

What county is 57368 in?

57368 lies in Aurora County.

What area code is 57368?

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

What time zone is 57368 in?

57368 uses America/Chicago.

How many people live in 57368?

About 1,068 people live in ZIP code 57368, in 418 households, at 4.6 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 57368?

$74,688 a year, against $75,081 across South Dakota.

What ZIP codes are near 57368?

The closest are 57363 (11.8 mi), 57383 (12.2 mi), 57375 (13.3 mi), 57359 (19 mi) and 57328 (21.6 mi).

Is 57368 a PO Box ZIP code?

57368 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “57368 ZIP Code — Plankinton, South Dakota (Aurora County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/57368

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/57368.json

Underlying data is public domain or openly licensed — sources, vintages and licences.