PlainZIP

Atherton, CA

Single-footprint Census roll-up for Atherton, CA: 1 USPS ZIP, population 7,089. 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 ATHERTON-CA · Atherton, CA 1 ZIPs · 7,089 pop · #96/25278 · San Mateo County

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

  • INC-TOP $250,001
  • RANK-TOP #96/25278
  • ABOVE-PEER over San Carlos
  • BOOK-ONE 1 ZIP
  • OWN-HIGH 88% owners
  • POP-TOWN 7,089
  • SPREAD-UNK Single-ZIP book
  • HOME-TOP $2,000,001

Nearest income peer: San Carlos, CA ( $9,927 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 Atherton

Lowest/highest poles plus county-sharing cities nearest Atherton 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, Atherton, 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
7,089
city population (Census)
1
USPS ZIP codes covered
$250,000+
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 $250,000+ and home value $2,000,000+ should be read as near-neighborhood numbers ; bachelor's attainment averages 83.2%.

Owner-occupancy here runs high (87.6%) - tenure is stable enough that the ZIP detail's owner share is the right next click, not a renter-heavy compare.

Within California, Belvedere Tiburon is the closest lower-income city by average ZIP household income. Its 1 ZIP footprint is the immediate statewide comparison for Atherton.

Population concentration

Atherton's single ZIP 94027 carries the town

Atherton is published as a single USPS ZIP. Code 94027 is the entire residential footprint (7,089 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 Atherton's one ZIP

Citywide ZBP: 180 establishments, 1,883 employees , annual payroll $168,104k (~25 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 94027 (180 units) ; leading NAICS Professional, scientific, and technical services (42) · also Real estate and rental and leasing · Finance and insurance .

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ZIP Codes in Atherton, CA

These ZIP codes sit in San Mateo County, which covers 30 ZIP codes in all; 1 of them fall in Atherton. See the San Mateo County roll-up →

No other city sharing San Mateo County reports a higher average ZIP median income than Atherton. San Mateo, Daly City and Redwood City sit below it, so a household comparing this county on income alone starts here. Daly City marks the far end of that range at $125,011, 50% below Atherton.

ZIP Code Population Median income Establishments Density
94027 7,089 $250,000+ 180 527
How we build city roll-ups · Guide: reading ZIP code data · BLS wages

Atherton 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 Atherton, .