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zipcodes.pro — ZIP/57223

57223

ZIP 57223 is Castlewood, South Dakota, mostly in Hamlin County; area code 605; Central time.

Type
Standard
Time zone
America/Chicago
County
Hamlin +1 more
Metro area
none
Population
1,429
Coordinates
44.7123, -96.9944
☼ Live from 57223 — Castlewood, SD

Weather right now

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Local time: —

Where 57223 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 57223
  • 🔢 Type 57223 into a pocket calculator and turn it upside down: EZZLS — not quite a word, sorry.
  • ➕ 57223 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 19, a total 2,454 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1101111110000111
  • 🏠 Its numerical neighbours: 57221 (Bryant, SD, 23 mi away) and 57224 (Claire City, SD, 76 mi away).
  • 🔄 Backwards, 57223 becomes 32275, which is not a ZIP code at all.
  • 👥 25 other ZIP codes are made of exactly the same digits (22735, 25327, 25723, 27235, 27253, 27325, …). The farthest-flung twin is 32752 in Longwood, FL, 1,402 miles away.
  • 🧭 Farther north than 90% of all ZIP codes, and farther west than 74%.
  • 🎯347 miles north of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 57223 and you would come out at 44.71°S, 83.01°E — 681 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 35m of daylight. Shortest: 8h 48m.
  • 📏 At 124.6 square miles of land, 57223 is bigger than 83% of ZIP codes — room for about 95 Central Parks.
🌙 The sky over 57223 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population1,429This ZIP1,429
Households510This ZIP510
Housing units575This ZIP575
Median age34.3This ZIP34.3South Dakota38.0US 38.9
Median household income$92,424This ZIP$92,424South Dakota$75,081US $80,734
Median home value$236,600This ZIP$236,600South Dakota$257,400US $332,700
Median gross rent$1,133This ZIP$1,133South Dakota$946US $1,413
Bachelor's degree or higher28.5%This ZIP28.5%
Mean commute24.8 minThis ZIP24.8 min
Population density11.5 / sq miThis ZIP11.5 / sq mi

Business and tax activity

Business establishments43This ZIP43
Employees173This ZIP173
Annual payroll$8,052,000This ZIP$8,052,000
Tax returns filed700This ZIP700
Total adjusted gross income$56,850,000This ZIP$56,850,000

Land area

Land area124.64 sq miThis ZIP124.64 sq mi
Water area3.18 sq miThis ZIP3.18 sq mi

Counties 57223 spans

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

CountyShare of this ZIP
Hamlin County 97.6%
Deuel County 2.4%

Other place names in 57223

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

ZIP codes near 57223

ZIPCityDistance
57234 Estelline, SD 8.6 mi
57241 Hayti, SD 11.0 mi
57238 Goodwin, SD 12.9 mi
57248 Lake Norden, SD 13.0 mi
57245 Kranzburg, SD 13.1 mi
57226 Clear Lake, SD 14.0 mi
57201 Watertown, SD 16.2 mi
57220 Bruce, SD 17.9 mi
57268 Toronto, SD 18.0 mi
57242 Hazel, SD 18.3 mi

Find every ZIP code within 10 miles of 57223 →

Questions about this ZIP code

Where is ZIP code 57223?

57223 is in Castlewood, South Dakota, in Hamlin County. Its published point location is 44.7123, -96.9944.

What county is 57223 in?

57223 spans 2 counties: Hamlin County and Deuel County. Most of it falls in Hamlin 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 57223?

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

What time zone is 57223 in?

57223 uses America/Chicago.

How many people live in 57223?

About 1,429 people live in ZIP code 57223, in 510 households, at 11.5 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 57223?

$92,424 a year, against $75,081 across South Dakota.

What ZIP codes are near 57223?

The closest are 57234 (8.6 mi), 57241 (11 mi), 57238 (12.9 mi), 57248 (13 mi) and 57245 (13.1 mi).

Is 57223 a PO Box ZIP code?

57223 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “57223 ZIP Code — Castlewood, South Dakota (Hamlin County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/57223

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/57223.json

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