PlainZIP

Diamond Bar, CA

Single-footprint Census roll-up for Diamond Bar, CA: 1 USPS ZIP, population 46,457. 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 DIAMOND-BAR-CA · Diamond Bar, CA 1 ZIPs · 46,457 pop · #3608/25278 · Los Angeles County

INC-HIGH · RANK-TOP · PHOTO-FINISH · BOOK-ONE · OWN-MID · POP-SMALL · SPREAD-UNK · HOME-TOP

  • INC-HIGH $105,565
  • RANK-TOP #3608/25278
  • PHOTO-FINISH ≈ Torrance
  • BOOK-ONE 1 ZIP
  • OWN-MID 78% owners
  • POP-SMALL 46,457
  • SPREAD-UNK Single-ZIP book
  • HOME-TOP $915,100

Nearest income peer: Torrance, CA (+ $1,689 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 Diamond Bar

Lowest/highest poles plus county-sharing cities nearest Diamond Bar 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, Diamond Bar, CA sits among US cities with an upper-quartile household income, on a small-city population base, across a single-ZIP footprint.

Top 14%
household income vs 25,278 US cities
46,457
city population (Census)
1
USPS ZIP codes covered
$105,565
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 $105,565 and home value $915,100 should be read as near-neighborhood numbers ; bachelor's attainment averages 53.7%.

Owner-occupancy sits in a mixed band (77.5%) - check the ZIP page's tenure split before treating Diamond Bar as a pure owner town.

Within California, Sonoma is the closest lower-income city and Mammoth Lakes the closest higher-income city by average ZIP household income. Their 1 and 1 ZIP footprints are the immediate statewide comparison set for Diamond Bar.

Population concentration

Diamond Bar's single ZIP 91765 carries the town

Diamond Bar is published as a single USPS ZIP. Code 91765 is the entire residential footprint (46,457 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 Diamond Bar's one ZIP

Citywide ZBP: 1,793 establishments, 11,381 employees , annual payroll $690,770k (~39 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 91765 (1,793 units) ; leading NAICS Professional, scientific, and technical services (301) · also Wholesale trade · Health care and social assistance .

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ZIP Codes in Diamond Bar, CA

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

Diamond Bar sits in the upper half of Los Angeles County on income: Los Angeles, Long Beach and Whittier report less, while Pasadena reports more. Van Nuys marks the far end of that range at $73,875, 30% below Diamond Bar.

ZIP Code Population Median income Establishments Density
91765 46,457 $105,565 1,793 948
How we build city roll-ups · Guide: reading ZIP code data · BLS wages

Diamond Bar 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 Diamond Bar, .