PlainZIP

Fairfax, CA

Single-footprint Census roll-up for Fairfax, CA: 1 USPS ZIP, population 8,500. 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 FAIRFAX-CA · Fairfax, CA 1 ZIPs · 8,500 pop · #990/25278 · Marin County

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

  • INC-TOP $145,362
  • RANK-TOP #990/25278
  • PHOTO-FINISH ≈ Sausalito
  • BOOK-ONE 1 ZIP
  • OWN-MID 70% owners
  • POP-TOWN 8,500
  • SPREAD-UNK Single-ZIP book
  • HOME-TOP $1,170,000

Nearest income peer: Sausalito, CA (+ $1,584 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 Fairfax

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

Top 4%
household income vs 25,278 US cities
8,500
city population (Census)
1
USPS ZIP codes covered
$145,362
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 $145,362 and home value $1,170,000 should be read as near-neighborhood numbers ; bachelor's attainment averages 70.7%.

Owner-occupancy sits in a mixed band (69.8%) - check the ZIP page's tenure split before treating Fairfax as a pure owner town.

Within California, Rancho Santa Fe is the closest lower-income city and Angelus Oaks the closest higher-income city by average ZIP household income. Their 2 and 1 ZIP footprints are the immediate statewide comparison set for Fairfax.

Population concentration

One ZIP, 94930, is all of Fairfax

There is no split to weigh here: 94930 holds every one of Fairfax's 8,500 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 Fairfax's one ZIP

Citywide ZBP: 273 establishments, 1,776 employees , annual payroll $91,943k (~32 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 94930 (273 units) ; leading NAICS Professional, scientific, and technical services (56) · also Construction · Accommodation and food services .

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ZIP Codes in Fairfax, CA

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

Fairfax lands mid-pack among the 12 cities sharing Marin County: Mill Valley, San Anselmo and Belvedere Tiburon earn more and San Rafael, Novato and San Quentin earn less. Belvedere Tiburon marks the far end of that range at $246,045, 69% above Fairfax.

ZIP Code Population Median income Establishments Density
94930 8,500 $145,362 273 205
How we build city roll-ups · Guide: reading ZIP code data · BLS wages

Fairfax 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 Fairfax, .