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/CINCINNATI

Cincinnati ZIP code, Iowa

The ZIP code for Cincinnati, IA is 52549, and its area code is 641.

USPS city name
1 ZIP code
Population
229
Area code
641
State
Iowa

Cincinnati in numbers

About 229 people live in Cincinnati, in 104 households. The median household income is $45,625 a year, 39% below the Iowa median of $75,059 (US: $80,734). The median owner-occupied home is valued at $56,400 (73% below the Iowa median), and median gross rent is $850 a month. The median age is 47.3; 11.5% of adults 25 and over hold a bachelor's degree or higher (31.4% across Iowa); the average commute takes 18 minutes.

Population229Cincinnati229
Households104Cincinnati104
Median age47.3Cincinnati47.3Iowa38.6US 38.9
Median household income$45,625Cincinnati$45,625Iowa$75,059US $80,734
Median home value$56,400Cincinnati$56,400Iowa$208,000US $332,700
Median gross rent$850Cincinnati$850Iowa$972US $1,413
Bachelor's degree or higher11.5%Cincinnati11.5%Iowa31.4%US 35.7%
Mean commute18.3 minCincinnati18.3 minIowa19.8 minUS 26.4 min
Population density130 / sq miCincinnati130 / sq mi

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

ZIP codes addressed as Cincinnati

ZIP codes with the USPS city name Cincinnati
ZIP City Type Population Median income Median home
52549 Cincinnati , IA Standard 487 $62,292 $88,600

Map of Cincinnati ZIP codes

52549

The ZIP codes of Cincinnati, 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 Cincinnati

The nearest larger towns are Centerville (5,372 people, 7.3 mi), Seymour (594 people, 11 mi) and Unionville, MO (1,824 people, 12 mi).

Towns near Cincinnati
TownPopulationDistance
Centerville 5,372 7.3 mi
Bloomfield 2,742 27.7 mi
Albia 3,663 28.0 mi

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

Cite this page

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

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