PlainZIP

San Quentin, CA

Single-footprint Census roll-up for San Quentin, CA: 1 USPS ZIP, population 5,094. 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-QUENTIN-CA · San Quentin, CA 1 ZIPs · 5,094 pop · #2595/25278 · Marin County

INC-TOP · RANK-TOP · BELOW-PEER · BOOK-ONE · OWN-LOW · POP-TOWN · SPREAD-UNK · HOME-UNK

  • INC-TOP $115,192
  • RANK-TOP #2595/25278
  • BELOW-PEER under Novato
  • BOOK-ONE 1 ZIP
  • OWN-LOW 45% owners
  • POP-TOWN 5,094
  • SPREAD-UNK Single-ZIP book
  • HOME-UNK Homes pending

Nearest income peer: Novato, CA (+ $3,913 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 Quentin

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

Top 10%
household income vs 25,278 US cities
5,094
city population (Census)
1
USPS ZIP codes covered
$115,192
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 $115,192 and home value - should be read as near-neighborhood numbers ; bachelor's attainment averages 7.0%.

Owner-occupancy is comparatively low (44.6%) for this income tier, rent - may matter more than the home-value average.

Within California, Mira Loma is the closest lower-income city and Fountain Valley the closest higher-income city by average ZIP household income. Their 1 and 1 ZIP footprints are the immediate statewide comparison set for San Quentin.

Population concentration

San Quentin reads through its lone ZIP, 94964

5,094 ACS residents, one ZIP: 94964 is not the leading code inside San Quentin, it is the only one on file. Treat the ZIP page as the primary source for anything below the city-wide total.

Census ZBP business roll-up

Sparse ZBP book inside single-ZIP San Quentin

Citywide ZBP: 6 establishments, 19 employees , annual payroll $1,173k (~1 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 94964 (6 units) ; leading NAICS Health care and social assistance (3) .

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ZIP Codes in San Quentin, CA

These ZIP codes sit in Marin County, which covers 29 ZIP codes in all; 1 of them fall in San Quentin. See the Marin County roll-up →

San Quentin sits in the lower half of Marin County on income: San Rafael, Novato and Mill Valley report more, Point Reyes Station and Bolinas report less. Belvedere Tiburon marks the far end of that range at $246,045, 114% above San Quentin.

ZIP Code Population Median income Establishments Density
94964 5,094 $115,192 6 5,060
How we build city roll-ups · Guide: reading ZIP code data · BLS wages

San Quentin 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 Quentin, .