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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/50703

50703

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

Type
Standard
Time zone
America/Chicago
County
Black Hawk
Population
17,952
Coordinates
42.5481, -92.2864
☼ Live from 50703 — Waterloo, IA

Weather right now

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Local time: —

Where 50703 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 50703
  • 🔢 Type 50703 into a pocket calculator and turn it upside down: EOLOS — not quite a word, sorry.
  • ➕ As a number, 50,703 = 3 × 16901. Its digits add up to 15, a total 1,657 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1100011000001111
  • 🏠 Its numerical neighbours: 50702 (Waterloo, IA, 6 mi away) and 50704 (Waterloo, IA, 6 mi away).
  • 🔄 Backwards, 50703 becomes 30705 — and that is a real ZIP code: Chatsworth, GA, 675 miles away.
  • 👥 29 other ZIP codes are made of exactly the same digits (00735, 03057, 03570, 03750, 05037, 05073, …). The farthest-flung twin is 00735 in Ceiba, PR, 2,290 miles away.
  • 🧭 Farther north than 79% of all ZIP codes, and farther west than 62%.
  • 🎯377 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 50703 and you would come out at 42.55°S, 87.71°E — 960 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 03m.
  • 📏 At 93.2 square miles of land, 50703 is bigger than 76% of ZIP codes — room for about 71 Central Parks.
🌙 The sky over 50703 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population17,952This ZIP17,952
Households7,445This ZIP7,445
Housing units8,440This ZIP8,440
Median age38.5This ZIP38.5Iowa38.6US 38.9
Median household income$50,060This ZIP$50,060Iowa$75,059US $80,734
Median home value$95,900This ZIP$95,900Iowa$208,000US $332,700
Median gross rent$952This ZIP$952Iowa$972US $1,413
Bachelor's degree or higher13.6%This ZIP13.6%
Mean commute16.7 minThis ZIP16.7 min
Population density192.6 / sq miThis ZIP192.6 / sq mi

Business and tax activity

Business establishments455This ZIP455
Employees13,817This ZIP13,817
Annual payroll$1,024,076,000This ZIP$1,024,076,000
Tax returns filed7,510This ZIP7,510
Total adjusted gross income$347,749,000This ZIP$347,749,000

Land area

Land area93.23 sq miThis ZIP93.23 sq mi
Water area0.97 sq miThis ZIP0.97 sq mi

Other place names in 50703

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

ZIP codes near 50703

ZIPCityDistance
50623 Dewar, IA 4.2 mi
50707 Evansdale, IA 4.9 mi
50614 Cedar Falls, IA 5.5 mi
50704 Waterloo, IA 5.5 mi
50702 Waterloo, IA 6.1 mi
50667 Raymond, IA 6.2 mi
50626 Dunkerton, IA 6.4 mi
50622 Denver, IA 9.0 mi
50701 Waterloo, IA 9.5 mi
50634 Gilbertville, IA 9.7 mi

Find every ZIP code within 10 miles of 50703 →

Questions about this ZIP code

Where is ZIP code 50703?

50703 is in Waterloo, Iowa, in Black Hawk County, part of the Waterloo-Cedar Falls, IA metropolitan area. Its published point location is 42.5481, -92.2864.

What county is 50703 in?

50703 lies in Black Hawk County.

What area code is 50703?

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

What time zone is 50703 in?

50703 uses America/Chicago.

How many people live in 50703?

About 17,952 people live in ZIP code 50703, in 7,445 households, at 192.6 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 50703?

$50,060 a year, against $75,059 across Iowa.

What ZIP codes are near 50703?

The closest are 50623 (4.2 mi), 50707 (4.9 mi), 50614 (5.5 mi), 50704 (5.5 mi) and 50702 (6.1 mi).

Is 50703 a PO Box ZIP code?

50703 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “50703 ZIP Code — Waterloo, Iowa (Black Hawk County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/50703

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