PlainZIP

San Marino, CA

Single-footprint Census roll-up for San Marino, CA: 1 USPS ZIP, population 13,361. 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 SAN-MARINO-CA · San Marino, CA 1 ZIPs · 13,361 pop · #230/25278 · Los Angeles County

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

  • INC-TOP $204,847
  • RANK-TOP #230/25278
  • ABOVE-PEER over Pasadena
  • BOOK-ONE 1 ZIP
  • OWN-MID 82% owners
  • POP-TOWN 13,361
  • SPREAD-UNK Single-ZIP book
  • HOME-TOP $2,000,001

Nearest income peer: Pasadena, CA ( $94,730 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 San Marino

Lowest/highest poles plus county-sharing cities nearest San Marino 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, San Marino, CA sits among US cities with a top-decile household income, on a town-scale population base, across a single-ZIP footprint.

Top 1%
household income vs 25,278 US cities
13,361
city population (Census)
1
USPS ZIP codes covered
$204,847
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 $204,847 and home value $2,000,000+ should be read as near-neighborhood numbers ; bachelor's attainment averages 82.5%.

Owner-occupancy sits in a mixed band (82.0%) - check the ZIP page's tenure split before treating San Marino as a pure owner town.

Within California, Manhattan Beach is the closest lower-income city and Sunol the closest higher-income city by average ZIP household income. Their 1 and 1 ZIP footprints are the immediate statewide comparison set for San Marino.

Population concentration

One ZIP, 91108, is all of San Marino

There is no split to weigh here: 91108 holds every one of San Marino's 13,361 ACS residents. City-level and ZIP-level numbers on this site are the same number twice, check the ZIP page for the income/tenure/commute breakdown.

Census ZBP business roll-up

Dense ZBP book packed into San Marino's one ZIP

Citywide ZBP: 653 establishments, 2,933 employees , annual payroll $177,584k (~49 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 91108 (653 units) ; leading NAICS Professional, scientific, and technical services (136) · also Health care and social assistance · Real estate and rental and leasing .

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ZIP Codes in San Marino, CA

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

No other city sharing Los Angeles County reports a higher average ZIP median income than San Marino. 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, 64% below San Marino.

ZIP Code Population Median income Establishments Density
91108 13,361 $204,847 653 1,354
How we build city roll-ups · Guide: reading ZIP code data · BLS wages

San Marino 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 San Marino, .