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ZIP code

91789

Walnut, CA

STANDARD

91789 covers Walnut in Los Angeles County, with 40,933 people in the ACS 2023 estimate.

Figures are for the Census ZIP Code Tabulation Area (ZCTA), which is not the same as a USPS ZIP code. A PO Box or unique ZIP may have no ZCTA and no demographics. Methodology

ACS 2023 population

40,933

Median household income

$125,742

Median home value

$936,800

U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 91789. Methodology

ZIP code map of 91789

Census ZCTA boundary for ZIP 91789 in Walnut, California
Census ZCTA boundary for ZIP 91789 in Walnut, California. A ZCTA is not the same as a USPS ZIP code. Boundaries: U.S. Census Bureau. Methodology · Data sources
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About ZIP code 91789

Type

STANDARD

City

Walnut

County

Los Angeles County

Timezone

America/Los_Angeles

Area codes

626, 840, 909

Land area

15.9 sq mi

Water area

0.05 sq mi

Households

13,486

Median gross rent

$2,868

Acceptable cities: City Industry, City Of Industry, Diamond Bar

More enterprise fields

Timezone
America/Los_Angeles
Area Codes
626, 840, 909
World Region
NA
Country
US

Commercial ZIP directory · not ACS

Commercial ZIP directory population_count for ZCTA 91789. Not ACS. Methodology

People in 91789

Race

  • White5,426
  • Black or African American951
  • American Indian or Alaska Native189
  • Asian27,454
  • Native Hawaiian and Pacific Islander33
  • Other race3,319
  • Two or more races3,863

Hispanic or Latino (any race): 7,863

Age

  • Under 103,473
  • 10 to 194,811
  • 20 to 295,171
  • 30 to 394,445
  • 40 to 494,933
  • 50 to 596,095
  • 60 to 696,556
  • 70 to 794,092
  • 80 and older1,659

Income and housing in 91789

Poverty rate

7.7%

Median earnings

$54,865

Median household income

$125,742

Median home value

$936,800

Median gross rent

$2,868

Education

  • High school graduate93.4%
  • Bachelor's degree53.2%
  • Graduate degree18.0%

Places covering 91789

Cities and places — Population overlap

Share of this ZIP/ZCTA’s population located within each place, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.

ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology

Counties — Population overlap

Share of this ZIP/ZCTA’s population located within each county, based on ZIP Code Database county-overlap data. This is a population measure, not land-area overlap or the Census county population.

ZIP Code Database county-overlap table, field percent_of_zip_population_in_county, keyed by county_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology

0.0% of this ZIP is outside city limits (a real overlap row, not missing data).

Population history for 91789

IRS populationACS population
48,03224,016020052023

Hover the chart or read the table below (Year | ACS | IRS).

Population history. Year | ACS population | IRS population. ACS and IRS are separate series. Blank cells mean that source did not publish a count for the year.
YearACS populationIRS population
200543,184
200641,661
200743,279
200842,386
200941,325
201042,158
201142,29241,958
201242,33241,610
201342,60941,360
201443,36941,130
201543,80541,160
201643,97340,600
201744,11540,720
201844,47440,490
201944,44040,450
202043,53141,290
202141,82940,090
202241,37739,110
202340,933

ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.

ZIP codes near 91789

12 nearest ZIP centroids (any distance)

  1. 91792West Covina2.7 miPop 30,921 · Income $96,383
  2. 91765Diamond Bar3.3 miPop 44,779 · Income $104,737
  3. 91791West Covina3.7 miPop 33,321 · Income $100,365
  4. 91748Rowland Heights3.9 miPop 43,137 · Income $83,455
  5. 91724Covina4.2 miPop 28,113 · Income $102,129
  6. 91744La Puente4.8 miPop 78,253 · Income $92,624
  7. 91768Pomona4.9 miPop 34,921 · Income $76,313
  8. 91723Covina5.0 miPop 18,200 · Income $87,363
  9. 91790West Covina5.8 miPop 44,791 · Income $100,142
  10. 91766Pomona5.9 miPop 68,673 · Income $77,699
  11. 92821Brea6.0 miPop 42,196 · Income $116,660
  12. 91722Covina6.2 miPop 34,087 · Income $98,033

ZIP centroids within 2 miles

No other ZIP codes within 2 miles of 91789, measured by Census internal-point centroids. Try a wider radius.

ZIPs within 2 miles of this place

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91789 Walnut, CA

Looking up ZIP codes within 2 miles of 91789 Walnut, CA, measured by centroid distance.

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ZIP code 91789 FAQ

What city is ZIP code 91789 in?
91789 is in Walnut, CA.
What county is 91789 in?
91789 is in Los Angeles County.
What is the median household income in 91789?
The median household income in 91789 is $125,742.
Which ZIP codes are near 91789?
Use the radius tool on this page to list ZIP codes within a chosen distance of 91789.