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/CA/CHARTER-OAK

Charter Oak ZIP codes, California

No ZIP code is named for Charter Oak, CA; addresses there use a neighbouring town's name. 3 ZIP codes cover it: 91722, 91724 and 91740.

USPS city name
0 ZIP codes
Overlapping the city
3 more
Population
9,442

Charter Oak in numbers

About 9,442 people live in Charter Oak, in 3,078 households. The median household income is $88,393 a year, 11% below the California median of $99,122 (US: $80,734). The median owner-occupied home is valued at $606,200 (17% below the California median), and median gross rent is $1,900 a month. The median age is 39.6; 31.7% of adults 25 and over hold a bachelor's degree or higher (37.1% across California); the average commute takes 27 minutes.

Population9,442Charter Oak9,442
Households3,078Charter Oak3,078
Median age39.6Charter Oak39.6California37.9US 38.9
Median household income$88,393Charter Oak$88,393California$99,122US $80,734
Median home value$606,200Charter Oak$606,200California$734,700US $332,700
Median gross rent$1,900Charter Oak$1,900California$2,036US $1,413
Bachelor's degree or higher31.7%Charter Oak31.7%California37.1%US 35.7%
Mean commute27.2 minCharter Oak27.2 minCalifornia28.7 minUS 26.4 min
Population density10,175 / sq miCharter Oak10,175 / sq mi

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

ZIP codes covering Charter Oak

These ZIP codes cover part of Charter Oak but are addressed as somewhere else.

ZIP codes overlapping Charter Oak
ZIP City Type Population Median income Median home
91722 Covina , CA Standard 35,099 $102,062 $653,900
91724 Covina , CA Standard 28,352 $103,163 $782,700
91740 Glendora , CA Standard 26,168 $99,083 $787,400

Map of Charter Oak ZIP codes

The ZIP codes of Charter Oak, CA, 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 Charter Oak

The nearest larger towns are Covina (49,888 people, 1.7 mi), Citrus (10,904 people, 2.1 mi) and San Dimas (33,789 people, 2.8 mi).

Towns near Charter Oak
TownPopulationDistance
Covina 49,888 1.7 mi
Citrus 10,904 2.1 mi
San Dimas 33,789 2.8 mi
Glendora 50,926 3.0 mi
Vincent 15,340 3.9 mi
Azusa 49,031 4.1 mi
West Covina 107,037 4.4 mi
Walnut 27,611 4.5 mi
La Verne 30,600 5.1 mi
Valinda 20,962 6.0 mi
Pomona 147,943 6.2 mi
Baldwin Park 70,138 6.7 mi
Duarte 22,184 6.7 mi
South San Jose Hills 16,911 6.8 mi

More nearby: every ZIP code in Los Angeles County · California ZIP codes

Cite this page

zipcodes.pro. “Charter Oak, CA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ca/charter-oak

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