PlainZIP

Millbrae, CA

Single-footprint Census roll-up for Millbrae, CA: 1 USPS ZIP, population 21,536. 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 MILLBRAE-CA · Millbrae, CA 1 ZIPs · 21,536 pop · #587/25278 · San Mateo County

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

  • INC-TOP $163,476
  • RANK-TOP #587/25278
  • PHOTO-FINISH ≈ San Mateo
  • BOOK-ONE 1 ZIP
  • OWN-LOW 61% owners
  • POP-TOWN 21,536
  • SPREAD-UNK Single-ZIP book
  • HOME-TOP $1,934,900

Nearest income peer: San Mateo, CA (+ $2,024 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 Millbrae

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

Top 2%
household income vs 25,278 US cities
21,536
city population (Census)
1
USPS ZIP codes covered
$163,476
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 $163,476 and home value $1,934,900 should be read as near-neighborhood numbers ; bachelor's attainment averages 52.7%.

Owner-occupancy is comparatively low (60.8%) for this income tier, rent $3,272 may matter more than the home-value average.

Within California, Agoura Hills is the closest lower-income city and Mount Hamilton the closest higher-income city by average ZIP household income. Their 1 and 1 ZIP footprints are the immediate statewide comparison set for Millbrae.

Population concentration

Millbrae reads through its lone ZIP, 94030

21,536 ACS residents, one ZIP: 94030 is not the leading code inside Millbrae, 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

Dense ZBP book packed into Millbrae's one ZIP

Citywide ZBP: 539 establishments, 4,103 employees , annual payroll $219,323k (~25 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 94030 (539 units) ; leading NAICS Accommodation and food services (98) · also Professional, scientific, and technical services · Health care and social assistance .

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ZIP Codes in Millbrae, CA

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

Millbrae lands mid-pack among the 11 cities sharing San Mateo County: Redwood City, Burlingame and Menlo Park earn more and Daly City, Palo Alto and South San Francisco earn less. San Carlos marks the far end of that range at $240,074, 47% above Millbrae.

ZIP Code Population Median income Establishments Density
94030 21,536 $163,476 539 2,454
How we build city roll-ups · Guide: reading ZIP code data · BLS wages

Millbrae 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 Millbrae, .