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/50704

50704

ZIP 50704 is in Waterloo, Iowa, in Black Hawk County; area code 319; Central time. Waterloo has 4 ZIP codes; the others are 50701, 50702 and 50703.

Type
No street area
Time zone
America/Chicago
County
Black Hawk
Coordinates
42.4698, -92.3095

The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

This ZIP code has no Census tabulation area of its own. Its point falls inside ZCTA 50702, whose figures describe that area — not this ZIP code.

☼ Live from 50704 — Waterloo, IA

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Where 50704 is

This ZIP code has no Census tabulation area, so there is no boundary to draw — the marker is its published point location.

★ Weird and wonderful facts about 50704
  • 🔢 Type 50704 into a pocket calculator and turn it upside down: hOLOS — not quite a word, sorry.
  • ➕ As a number, 50,704 = 2 × 2 × 2 × 2 × 3169. Its digits add up to 16, a total 1,922 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1100011000010000
  • 🏠 Its numerical neighbours: 50703 (Waterloo, IA, 6 mi away) and 50707 (Evansdale, IA, 2 mi away).
  • 🔄 Backwards, 50704 becomes 40705, which is not a ZIP code at all.
  • 👥 33 other ZIP codes are made of exactly the same digits (00745, 00754, 04057, 04570, 04750, 05047, …). The farthest-flung twin is 00754 in San Lorenzo, PR, 2,282 miles away.
  • 🧭 Farther north than 79% of all ZIP codes, and farther west than 62%.
  • 🎯374 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 50704 and you would come out at 42.47°S, 87.69°E — 962 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 18m of daylight. Shortest: 9h 04m.
🌙 The sky over 50704 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

Business and tax activity

Business establishments33This ZIP33
Employees4,900This ZIP4,900
Annual payroll$377,096,000This ZIP$377,096,000

Land area

ZIP codes near 50704

ZIPCityDistance
50614 Cedar Falls, IA 0.0 mi
50702 Waterloo, IA 0.6 mi
50707 Evansdale, IA 1.5 mi
50701 Waterloo, IA 4.0 mi
50667 Raymond, IA 4.3 mi
50703 Waterloo, IA 5.5 mi
50634 Gilbertville, IA 6.0 mi
50623 Dewar, IA 6.4 mi
50613 Cedar Falls, IA 9.9 mi
50626 Dunkerton, IA 10.6 mi

Find every ZIP code within 10 miles of 50704 →

Questions about this ZIP code

Where is ZIP code 50704?

50704 is in Waterloo, Iowa, in Black Hawk County, part of the Waterloo-Cedar Falls, IA metropolitan area. Its published point location is 42.4698, -92.3095.

What county is 50704 in?

50704 lies in Black Hawk County.

What area code is 50704?

Waterloo uses area code 319, from NANPA's telephone records.

What time zone is 50704 in?

50704 uses America/Chicago.

What ZIP codes are near 50704?

The closest are 50614 (0 mi), 50702 (0.6 mi), 50707 (1.5 mi), 50701 (4 mi) and 50667 (4.3 mi).

Is 50704 a PO Box ZIP code?

Possibly. The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

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Cite this page

zipcodes.pro. “50704 ZIP Code — Waterloo, Iowa (Black Hawk County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/50704

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/50704.json

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