Home › United States › California › 91789
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91789
Walnut, California
Los Angeles · 🇺🇸 United States
ZIP Code
Population
40,298
Density/mi²
980
Complete ZIP Code Details
ZIP Code91789
CityWalnut
StateCalifornia (CA)
CountyLos Angeles
TimezoneAmerica/Los_Angeles
Coordinates34.0185800, -117.8540800
Population40,298
ZIP TypeSTANDARD
CountryUnited States

About 91789 - Walnut, California

Located in California, the United States is home to the densely populated community of Walnut, served by ZIP code 91789. It sits within Los Angeles County.

Around 40,298 people live in the 91789 ZIP code area. That's noticeably above the average for a California ZIP code, which sits near 22,296 people.

Population density runs around 980 people per sq. mile, making it a rural area.

Nearby communities in California include Fontana, Pittsburg, Los Angeles.

91789 vs. California Average
Population Share vs. Nearby ZIP Codes
Frequently Asked Questions
What is the ZIP code for Walnut?

The ZIP code for Walnut, California is 91789.

What county is 91789 located in?

91789 is located in Los Angeles County, California.

What is the population of 91789?

The population of 91789 (Walnut) is approximately 40,298 people.

Is 91789 bigger or smaller than a typical California ZIP code?

91789 is more populated than the typical California ZIP code, which averages around 22,296 people.

What are the ZIP code codes near 91789?

ZIP code codes near 91789 include 92336, 94565, 90011.