ZIP Code 91789 - Walnut California

ZIP Code 91789 is located in Walnut California. Portions of 91789 are also in Industry and Pomona and Rowland Heights and Diamond Bar. 91789 is entirely within Los Angeles County. Regionally, it is located in Metro Los Angeles.

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ZIP Code 91789 Quick Stats

ZIP Code NameWalnut
Primary CountyLos Angeles County
ZIP Code TypeStandard
Population (2022)41,377
Area Code(s)626 / 840 / 909
Current Time

ZIP Code 91789 Map

91789 Demographics

91789 can be classified socioeconomically as Middle Class class compared to other ZIP Codes in California based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 91789 is Asian. The majority race/ethnicity attending public schools in 91789 is Asian. The current unemployment level in 91789 is 3.4%.

Population Growth Rate0.00%
Population Density2,619 People per Square Mile
Total Households12,397
Percentage High Income Households11.9%
Median Household Income (2021)$116,583
Average Adjusted Gross Income (2021)$634,940
Current Unemployment Rate (May 2024)3.4%
Majority Race/EthnictyAsian - 62.55%
Public School Majority Race/EthnictyAsian - 59.23%

91789 Race/Ethnicty Breakdown

Native American1910.43%
Hawaiian/Pac. Islander1740.39%

91789 Public School Race/Ethnicty Breakdown

Native American40.05%
Hawaiian/Pac. Islander410.48%

91789 Educational Attainment Levels

Highest Education Level AttainedTotalPercentage
Less Than 1 Year of College1,1054.09%
Bachelor Degree9,07533.55%
High School Diploma4,25215.72%
No High School Diploma4921.82%
GED or Alternate2971.1%
1 or More Years of College3,71313.73%
Associates Degree3,39712.56%
Masters Degree3,21511.89%
Professional Degree1,0663.94%
Doctorate Degree4351.61%

91789 Geography

Adjacent ZIP Codes
Cities/Towns in 91789
RegionMetro Los Angeles
Metropolitan/Micropolitan Stat AreaLos Angeles-Long Beach-Anaheim, CA
Time ZonePacific Daylight Time
IANA TimezoneAmerica/Los_Angeles
Area16 Square Miles

91789 Politics

US Congressional Districts in 91789
California State Senate Districts in 91789
California State Assembly Districts in 91789

91789 Weather and Climate Data

Plant Hardiness ZoneZone 10a: 30F to 35F
Average First Frost DateDecember 11 - 20
Average Last Frost DateFebruary 1 - 10
Koppen-Geiger Climate ZoneCsa - Hot-Summer Mediterranean Climate

91789 Annual Climate Data

Avg Min Temp (°F)42444548525660605953464251
Avg Max Temp (°F)68707075778389908882746978
Avg Precip (In.)3.813.793.

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