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/57735

57735

ZIP 57735 is Edgemont, South Dakota, mostly in Fall River County; area code 605; Mountain time.

Upside down on a calculator, 57735 reads SELLS.

Type
Standard
Time zone
America/Denver
County
Fall River +2 more
Metro area
none
Population
1,727
Coordinates
43.2879, -103.8535
☼ Live from 57735 — Edgemont, SD

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 57735 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 57735
  • 🔢 Type 57735 into a pocket calculator and turn it upside down: SELLS — a real word! rare
  • ➕ As a number, 57,735 = 3 × 3 × 5 × 1283. Its digits add up to 27, a total 1,806 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1110000110000111
  • 🏠 Its numerical neighbours: 57732 (Deadwood, SD, 72 mi away) and 57737 (Enning, SD, 110 mi away).
  • 🔄 Backwards, 57735 becomes 53775, which is not a ZIP code at all.
  • 👥 15 other ZIP codes are made of exactly the same digits (35577, 35757, 35775, 37755, 53577, 55377, …). The farthest-flung twin is 37755 in Helenwood, TN, 1,126 miles away.
  • 🧭 Farther north than 84% of all ZIP codes, and farther west than 82%.
  • 🎯362 miles northwest of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 57735 and you would come out at 43.29°S, 76.15°E — 505 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 24m of daylight. Shortest: 8h 58m.
  • 📏 At 904.5 square miles of land, 57735 is bigger than 99% of ZIP codes — room for about 687 Central Parks.
🌙 The sky over 57735 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population1,727This ZIP1,727
Households773This ZIP773
Housing units1,001This ZIP1,001
Median age43.5This ZIP43.5South Dakota38.0US 38.9
Median household income$71,576This ZIP$71,576South Dakota$75,081US $80,734
Median home value$165,600This ZIP$165,600South Dakota$257,400US $332,700
Median gross rent$1,020This ZIP$1,020South Dakota$946US $1,413
Bachelor's degree or higher22.9%This ZIP22.9%
Mean commute26.9 minThis ZIP26.9 min
Population density1.9 / sq miThis ZIP1.9 / sq mi

Business and tax activity

Business establishments28This ZIP28
Employees136This ZIP136
Annual payroll$4,080,000This ZIP$4,080,000
Tax returns filed600This ZIP600
Total adjusted gross income$39,963,000This ZIP$39,963,000

Land area

Land area904.55 sq miThis ZIP904.55 sq mi
Water area0.68 sq miThis ZIP0.68 sq mi

Counties 57735 spans

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

CountyShare of this ZIP
Fall River County 77.4%
Custer County 20.7%
Sioux County 1.9%

Other place names in 57735

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

ZIP codes near 57735

ZIPCityDistance
57747 Hot Springs, SD 17.8 mi
57773 Pringle, SD 24.9 mi
57730 Custer, SD 32.0 mi
57763 Oelrichs, SD 32.4 mi
82225 Lusk, WY 32.6 mi
57782 Smithwick, SD 34.0 mi
57766 Oral, SD 34.3 mi
82222 Lance Creek, WY 40.8 mi
82701 Newcastle, WY 41.3 mi
69367 Whitney, NE 42.5 mi

Find every ZIP code within 10 miles of 57735 →

Questions about this ZIP code

Where is ZIP code 57735?

57735 is in Edgemont, South Dakota, in Fall River County. Its published point location is 43.2879, -103.8535.

What county is 57735 in?

57735 spans 3 counties: Fall River County, Custer County and Sioux County. Most of it falls in Fall River 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 57735?

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

What time zone is 57735 in?

57735 uses America/Denver.

How many people live in 57735?

About 1,727 people live in ZIP code 57735, in 773 households, at 1.9 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 57735?

$71,576 a year, against $75,081 across South Dakota.

What ZIP codes are near 57735?

The closest are 57747 (17.8 mi), 57773 (24.9 mi), 57730 (32 mi), 57763 (32.4 mi) and 82225 (32.6 mi).

Is 57735 a PO Box ZIP code?

57735 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “57735 ZIP Code — Edgemont, South Dakota (Fall River County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/57735

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/57735.json

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