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/57243

57243

ZIP 57243 is Henry, South Dakota, mostly in Codington County; area code 605; Central time.

Type
Standard
Time zone
America/Chicago
County
Codington +2 more
Metro area
Watertown, SD
Population
549
Coordinates
44.9129, -97.4424
☼ Live from 57243 — Henry, SD

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 57243 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 57243
  • 🔢 Type 57243 into a pocket calculator and turn it upside down: EhZLS — not quite a word, sorry.
  • ➕ As a number, 57,243 = 3 × 19081. Its digits add up to 21, a total 2,594 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1101111110011011
  • 🏠 Its numerical neighbours: 57242 (Hazel, SD, 10 mi away) and 57245 (Kranzburg, SD, 26 mi away).
  • 🔄 Backwards, 57243 becomes 34275 — and that is a real ZIP code: Nokomis, FL, 1,481 miles away.
  • 👥 50 other ZIP codes are made of exactly the same digits (23457, 24375, 25437, 27435, 27534, 27543, …). The farthest-flung twin is 34275 in Nokomis, FL, 1,481 miles away.
  • 🧭 Farther north than 91% of all ZIP codes, and farther west than 75%.
  • 🎯356 miles north of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 57243 and you would come out at 44.91°S, 82.56°E — 655 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 36m of daylight. Shortest: 8h 46m.
  • 📏 At 117.6 square miles of land, 57243 is bigger than 82% of ZIP codes — room for about 89 Central Parks.
🌙 The sky over 57243 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population549This ZIP549
Households285This ZIP285
Housing units350This ZIP350
Median age55.1This ZIP55.1South Dakota38.0US 38.9
Median household income$48,542This ZIP$48,542South Dakota$75,081US $80,734
Median home value$117,500This ZIP$117,500South Dakota$257,400US $332,700
Median gross rent$1,083This ZIP$1,083South Dakota$946US $1,413
Bachelor's degree or higher12.5%This ZIP12.5%
Mean commute26.7 minThis ZIP26.7 min
Population density4.7 / sq miThis ZIP4.7 / sq mi

Business and tax activity

Business establishments14This ZIP14
Employees60This ZIP60
Annual payroll$1,837,000This ZIP$1,837,000
Tax returns filed280This ZIP280
Total adjusted gross income$21,650,000This ZIP$21,650,000

Land area

Land area117.64 sq miThis ZIP117.64 sq mi
Water area5.87 sq miThis ZIP5.87 sq mi

Counties 57243 spans

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

CountyShare of this ZIP
Codington County 87.0%
Clark County 11.4%
Hamlin County 1.6%

Other place names in 57243

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

ZIP codes near 57243

ZIPCityDistance
57236 Garden City, SD 8.6 mi
57242 Hazel, SD 10.4 mi
57271 Vienna, SD 11.7 mi
57235 Florence, SD 12.5 mi
57272 Wallace, SD 13.6 mi
57225 Clark, SD 14.1 mi
57217 Bradley, SD 16.2 mi
57201 Watertown, SD 17.2 mi
57241 Hayti, SD 18.7 mi
57221 Bryant, SD 21.0 mi

Find every ZIP code within 10 miles of 57243 →

Questions about this ZIP code

Where is ZIP code 57243?

57243 is in Henry, South Dakota, in Codington County, part of the Watertown, SD micropolitan area. Its published point location is 44.9129, -97.4424.

What county is 57243 in?

57243 spans 3 counties: Codington County, Clark County and Hamlin County. Most of it falls in Codington 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 57243?

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

What time zone is 57243 in?

57243 uses America/Chicago.

How many people live in 57243?

About 549 people live in ZIP code 57243, in 285 households, at 4.7 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 57243?

$48,542 a year, against $75,081 across South Dakota.

What ZIP codes are near 57243?

The closest are 57236 (8.6 mi), 57242 (10.4 mi), 57271 (11.7 mi), 57235 (12.5 mi) and 57272 (13.6 mi).

Is 57243 a PO Box ZIP code?

57243 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “57243 ZIP Code — Henry, South Dakota (Codington County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/57243

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/57243.json

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