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 — CITY/IA/DELTA

Delta ZIP code, Iowa

The ZIP code for Delta, IA is 52550, and its area code is 641.

USPS city name
1 ZIP code
Population
363
Area code
641
State
Iowa

Delta in numbers

About 363 people live in Delta, in 131 households. The median household income is $52,083 a year, 31% below the Iowa median of $75,059 (US: $80,734). The median owner-occupied home is valued at $48,100 (77% below the Iowa median), and median gross rent is $1,038 a month. The median age is 37.2; 2.6% of adults 25 and over hold a bachelor's degree or higher (31.4% across Iowa); the average commute takes 33 minutes.

Population363Delta363
Households131Delta131
Median age37.2Delta37.2Iowa38.6US 38.9
Median household income$52,083Delta$52,083Iowa$75,059US $80,734
Median home value$48,100Delta$48,100Iowa$208,000US $332,700
Median gross rent$1,038Delta$1,038Iowa$972US $1,413
Bachelor's degree or higher2.6%Delta2.6%Iowa31.4%US 35.7%
Mean commute32.6 minDelta32.6 minIowa19.8 minUS 26.4 min
Population density379 / sq miDelta379 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Delta city. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Delta

ZIP codes with the USPS city name Delta
ZIP City Type Population Median income Median home
52550 Delta , IA Standard 552 $57,745 $110,200

Map of Delta ZIP codes

52550

The ZIP codes of Delta, IA, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Delta

The nearest larger towns are What Cheer (580 people, 5.5 mi), Sigourney (1,954 people, 6.6 mi) and Fremont (924 people, 9.3 mi).

Towns near Delta
TownPopulationDistance
Oskaloosa 11,504 16.2 mi
Ottumwa 25,430 21.3 mi
Fairfield 9,456 28.9 mi
Williamsburg 3,360 29.0 mi

More nearby: every ZIP code in Keokuk County · Iowa ZIP codes

Cite this page

zipcodes.pro. “Delta, IA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ia/delta

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