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/50120

50120

ZIP 50120 is Haverhill, Iowa, in Marshall County; area code 641; Central time.

Type
Standard
Time zone
America/Chicago
County
Marshall
Metro area
Marshalltown, IA
Population
428
Coordinates
41.9338, -92.9828
☼ Live from 50120 — Haverhill, IA

Weather right now

Asking the National Weather Service…

NEXRAD radar
Finding the nearest radar…
Local time: —

Where 50120 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 50120
  • 🔢 Type 50120 into a pocket calculator and turn it upside down: OZIOS — not quite a word, sorry.
  • ➕ As a number, 50,120 = 2 × 2 × 2 × 5 × 7 × 179. Its digits add up to 8, a total 251 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1100001111001000
  • 🏠 Its numerical neighbours: 50119 (Harvey, IA, 43 mi away) and 50122 (Hubbard, IA, 30 mi away).
  • 🔄 Backwards, 50120 becomes 02105, which is not a ZIP code at all.
  • 👥 23 other ZIP codes are made of exactly the same digits (01520, 02051, 02150, 05201, 10025, 10502, …). The farthest-flung twin is 02051 in Marshfield Hills, MA, 1,138 miles away.
  • 🧭 Farther north than 75% of all ZIP codes, and farther west than 63%.
  • 🎯326 miles northeast of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 50120 and you would come out at 41.93°S, 87.02°E — 956 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 14m of daylight. Shortest: 9h 07m.
  • 📏 At 17.0 square miles of land, 50120 is bigger than 35% of ZIP codes — room for about 13 Central Parks.
🌙 The sky over 50120 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population428This ZIP428
Households157This ZIP157
Housing units157This ZIP157
Median age41.6This ZIP41.6Iowa38.6US 38.9
Median household income$142,662This ZIP$142,662Iowa$75,059US $80,734
Median home value$177,000This ZIP$177,000Iowa$208,000US $332,700
Bachelor's degree or higher37.2%This ZIP37.2%
Mean commute22.3 minThis ZIP22.3 min
Population density25.2 / sq miThis ZIP25.2 / sq mi

Business and tax activity

Tax returns filed150This ZIP150
Total adjusted gross income$12,004,000This ZIP$12,004,000

Land area

Land area16.98 sq miThis ZIP16.98 sq mi
Water area0.00 sq mi

Other place names in 50120

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

ZIP codes near 50120

ZIPCityDistance
50162 Melbourne, IA 4.1 mi
50141 Laurel, IA 4.9 mi
50078 Ferguson, IA 6.2 mi
50158 Marshalltown, IA 9.1 mi
50106 Gilman, IA 9.8 mi
50234 Rhodes, IA 10.7 mi
50247 State Center, IA 11.1 mi
50142 Le Grand, IA 11.7 mi
50028 Baxter, IA 12.4 mi
50135 Kellogg, IA 13.8 mi

Find every ZIP code within 10 miles of 50120 →

Questions about this ZIP code

Where is ZIP code 50120?

50120 is in Haverhill, Iowa, in Marshall County, part of the Marshalltown, IA micropolitan area. Its published point location is 41.9338, -92.9828.

What county is 50120 in?

50120 lies in Marshall County.

What area code is 50120?

Haverhill uses area code 641, from NANPA's telephone records.

What time zone is 50120 in?

50120 uses America/Chicago.

How many people live in 50120?

About 428 people live in ZIP code 50120, in 157 households, at 25.2 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 50120?

$142,662 a year, against $75,059 across Iowa.

What ZIP codes are near 50120?

The closest are 50162 (4.1 mi), 50141 (4.9 mi), 50078 (6.2 mi), 50158 (9.1 mi) and 50106 (9.8 mi).

Is 50120 a PO Box ZIP code?

50120 is a standard ZIP code. A normal ZIP code with street delivery.

Download or cite

Cite this page

zipcodes.pro. “50120 ZIP Code — Haverhill, Iowa (Marshall County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/50120

Machine-readable version of these facts:

curl https://zipcodes.pro/zip/50120.json

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