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/MO/CALLAO

Callao ZIP code, Missouri

The ZIP code for Callao, MO is 63534, and its area code is 660.

USPS city name
1 ZIP code
Population
263
Area code
660

Callao in numbers

About 263 people live in Callao, in 90 households. The median household income is $39,063 a year, 45% below the Missouri median of $70,702 (US: $80,734). The median owner-occupied home is valued at $80,000 (65% below the Missouri median). The median age is 32.4; 12.0% of adults 25 and over hold a bachelor's degree or higher (32.4% across Missouri); the average commute takes 18 minutes.

Population263Callao263
Households90Callao90
Median age32.4Callao32.4Missouri39.0US 38.9
Median household income$39,063Callao$39,063Missouri$70,702US $80,734
Median home value$80,000Callao$80,000Missouri$230,300US $332,700
Bachelor's degree or higher12.0%Callao12.0%Missouri32.4%US 35.7%
Mean commute17.9 minCallao17.9 minMissouri23.5 minUS 26.4 min
Population density509 / sq miCallao509 / sq mi

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

ZIP codes addressed as Callao

ZIP codes with the USPS city name Callao
ZIP City Type Population Median income Median home
63534 Callao , MO Standard 652 $42,392 $114,500

Map of Callao ZIP codes

63534

The ZIP codes of Callao, MO, 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 Callao

The nearest larger towns are Bevier (657 people, 3.2 mi), Macon (5,466 people, 8.2 mi) and Atlanta (499 people, 12 mi).

Towns near Callao
TownPopulationDistance
Macon 5,466 8.2 mi
Brookfield 4,144 24.2 mi
Moberly 13,526 25.8 mi

More nearby: every ZIP code in Macon County · Missouri ZIP codes

Cite this page

zipcodes.pro. “Callao, MO ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/mo/callao

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