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/50585

50585

ZIP 50585 is Sioux Rapids, Iowa, mostly in Buena Vista County; area code 712; Central time.

Type
Standard
Time zone
America/Chicago
County
Buena Vista +1 more
Metro area
Storm Lake, IA
Population
1,080
Coordinates
42.9175, -95.1419
☼ Live from 50585 — Sioux Rapids, IA

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 50585 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 50585
  • 🔢 Type 50585 into a pocket calculator and turn it upside down: SBSOS — not quite a word, sorry.
  • ➕ As a number, 50,585 = 5 × 67 × 151. Its digits add up to 23, a total 2,533 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1100010110011001
  • 🏠 Its numerical neighbours: 50583 (Sac City, IA, 34 mi away) and 50586 (Somers, IA, 50 mi away).
  • 🔄 Backwards, 50585 becomes 58505 — and that is a real ZIP code: Bismarck, ND, 386 miles away.
  • 👥 7 other ZIP codes are made of exactly the same digits (05855, 08555, 50558, 55085, 55805, 58505, …). The farthest-flung twin is 05855 in Newport, VT, 1,147 miles away.
  • 🧭 Farther north than 82% of all ZIP codes, and farther west than 69%.
  • 🎯278 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 50585 and you would come out at 42.92°S, 84.86°E — 828 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 21m of daylight. Shortest: 9h 01m.
  • 📏 At 66.8 square miles of land, 50585 is bigger than 67% of ZIP codes — room for about 51 Central Parks.
🌙 The sky over 50585 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population1,080This ZIP1,080
Households438This ZIP438
Housing units502This ZIP502
Median age45.2This ZIP45.2Iowa38.6US 38.9
Median household income$71,346This ZIP$71,346Iowa$75,059US $80,734
Median home value$120,600This ZIP$120,600Iowa$208,000US $332,700
Median gross rent$612This ZIP$612Iowa$972US $1,413
Bachelor's degree or higher24.6%This ZIP24.6%
Mean commute28.7 minThis ZIP28.7 min
Population density16.2 / sq miThis ZIP16.2 / sq mi

Business and tax activity

Business establishments28This ZIP28
Employees191This ZIP191
Annual payroll$10,037,000This ZIP$10,037,000
Tax returns filed540This ZIP540
Total adjusted gross income$43,276,000This ZIP$43,276,000

Land area

Land area66.78 sq miThis ZIP66.78 sq mi
Water area0.25 sq miThis ZIP0.25 sq mi

Counties 50585 spans

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

CountyShare of this ZIP
Buena Vista County 51.7%
Clay County 48.3%

Other place names in 50585

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

ZIP codes near 50585

ZIPCityDistance
51033 Linn Grove, IA 5.6 mi
51343 Greenville, IA 7.0 mi
51366 Webb, IA 7.6 mi
50576 Rembrandt, IA 8.1 mi
50565 Marathon, IA 8.3 mi
51341 Gillett Grove, IA 8.8 mi
51047 Peterson, IA 11.6 mi
51357 Royal, IA 12.4 mi
50592 Truesdale, IA 13.2 mi
50510 Albert City, IA 13.5 mi

Find every ZIP code within 10 miles of 50585 →

Questions about this ZIP code

Where is ZIP code 50585?

50585 is in Sioux Rapids, Iowa, in Buena Vista County, part of the Storm Lake, IA micropolitan area. Its published point location is 42.9175, -95.1419.

What county is 50585 in?

50585 spans 2 counties: Buena Vista County and Clay County. Most of it falls in Buena Vista 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 50585?

Sioux Rapids uses area code 712, from NANPA's telephone records.

What time zone is 50585 in?

50585 uses America/Chicago.

How many people live in 50585?

About 1,080 people live in ZIP code 50585, in 438 households, at 16.2 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 50585?

$71,346 a year, against $75,059 across Iowa.

What ZIP codes are near 50585?

The closest are 51033 (5.6 mi), 51343 (7 mi), 51366 (7.6 mi), 50576 (8.1 mi) and 50565 (8.3 mi).

Is 50585 a PO Box ZIP code?

50585 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “50585 ZIP Code — Sioux Rapids, Iowa (Buena Vista County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/50585

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/50585.json

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