PlainZIP

Walnut, CA

Single-footprint Census roll-up for Walnut, CA: 1 USPS ZIP, population 43,079. Open the primary ZIP for household income, housing tenure, and commute from ACS 2023 5-Year Estimates.

U.S. Census Bureau, SimpleMaps US ZIP Code Database, delivery-area ZIP coverage

ACS city ledger plate

Sheet WALNUT-CA · Walnut, CA 1 ZIPs · 43,079 pop · #1792/25278 · Los Angeles County

INC-TOP · RANK-TOP · ABOVE-PEER · BOOK-ONE · OWN-MID · POP-SMALL · SPREAD-UNK · HOME-TOP

  • INC-TOP $125,720
  • RANK-TOP #1792/25278
  • ABOVE-PEER over Pasadena
  • BOOK-ONE 1 ZIP
  • OWN-MID 82% owners
  • POP-SMALL 43,079
  • SPREAD-UNK Single-ZIP book
  • HOME-TOP $975,000

Nearest income peer: Pasadena, CA ( $15,603 income $)

Instrument codes from this city’s ACS household income, national rank, county-peer gap, ZIP book, owner tenure, population scale, intra-city income spread, and home-value band, not a moving recommendation.

Income neighbourhood around Walnut

Lowest/highest poles plus county-sharing cities nearest Walnut on average ZIP median household income. Full ladder: /cities.

median HH income

What this shows County-sharing peers only, not the full US city board. Open a near peer when the gap is small; open the poles when the mosaic is wide.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2026-08-25

National city placement

According to ACS 5-Year Estimates, Walnut, CA sits among US cities with a top-decile household income, on a small-city population base, across a single-ZIP footprint.

Top 7%
household income vs 25,278 US cities
43,079
city population (Census)
1
USPS ZIP codes covered
$125,720
avg ZIP median income

Income percentile ranks this city's average ZIP median household income against 25,278 US cities with ACS income on at least one ZIP. Scale and ZIP-spread words come from Census population and USPS ZIP coverage.

High-income footprint on only 1 ZIP: the city page and the ZIP page nearly coincide. Headline income $125,720 and home value $975,000 should be read as near-neighborhood numbers ; bachelor's attainment averages 54.4%.

Owner-occupancy sits in a mixed band (82.1%) - check the ZIP page's tenure split before treating Walnut as a pure owner town.

Within California, Homewood is the closest lower-income city and Lake Forest the closest higher-income city by average ZIP household income. Their 1 and 1 ZIP footprints are the immediate statewide comparison set for Walnut.

Population concentration

Walnut's single ZIP 91789 carries the town

Walnut is published as a single USPS ZIP. Code 91789 is the entire residential footprint (43,079 ACS residents), so the city page and the ZIP page tell the same household story, open that ZIP for income, tenure, and commute detail.

Census ZBP business roll-up

Dense ZBP book packed into Walnut's one ZIP

Citywide ZBP: 2,325 establishments, 21,957 employees , annual payroll $1,345,373k (~54 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 91789 (2,325 units) ; leading NAICS Wholesale trade (513) · also Professional, scientific, and technical services · Transportation and warehousing .

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ZIP Codes in Walnut, CA

These ZIP codes sit in Los Angeles County, which covers 290 ZIP codes in all; 1 of them fall in Walnut. See the Los Angeles County roll-up →

No other city sharing Los Angeles County reports a higher average ZIP median income than Walnut. Los Angeles, Long Beach and Whittier sit below it, so a household comparing this county on income alone starts here. Van Nuys marks the far end of that range at $73,875, 41% below Walnut.

ZIP Code Population Median income Establishments Density
91789 43,079 $125,720 2,325 1,064
How we build city roll-ups · Guide: reading ZIP code data · BLS wages

Walnut roll-ups here are for informational purposes only and do not constitute financial or relocation advice. ACS and Census ZBP figures are estimates; confirm the current table against Census before a money or move decision involving Walnut, .