HomeCaliforniaSan Mateo CountyAtherton
Atherton, California: commercial real estate data.
Atherton is a Census town of 6,993 people across 5.02 square miles of land, in San Mateo County. Median household income is $250,001, 87.6 percent of occupied homes are owned, and the SBA record carries 1 7(a) approvals to borrowers here worth $300,000 since FY2020.
Underlined figures are computed by MMCG Analytics, not published by the agency.
Atherton
What Atherton is
- Census place typetown
- Land area5.02 sq mi
- Water area0.03 sq mi
- Population per square mile of land1,394
- County holding the largest share of its areaSan Mateo County, 100.0 percent
US Census Bureau, cartographic boundary file, places, 2024 vintage. US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Atherton
How many people live in Atherton
- Population6,993
- Median age49.1
- Population under 181,286
- Share under 1818.4 percent
- Population 65 and over1,793
- Share 65 and over25.6 percent
- Households2,227
- Family households1,781
- Share of households that are families80.0 percent
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Atherton
Income and work in Atherton
- Median household income$250,001
- Per capita income$188,631
- Civilian labor force2,846
- Employed2,754
- Unemployed92 plus or minus 55
- Unemployment rate3.2 percent plus or minus 1.9
- Adults 25 and over4,615
- Adults 25 and over with a high school diploma or higher98.6 percent
- Adults 25 and over with a bachelor degree or higher83.1 percent
- Adults 25 and over with a graduate degree52.3 percent
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Atherton
Housing in Atherton
- Housing units2,667
- Occupied units2,227
- Vacant units440 plus or minus 140
- Vacancy rate16.5 percent plus or minus 5.1
- Owner occupied1,950
- Renter occupied277 plus or minus 140
- Ownership rate87.6 percent
- Median owner-occupied home value$2,000,001
- Median gross rent, monthly$3,501
- Annual rent as a share of median income16.8 percent
- Single family units2,649
- Share single family99.3 percent
- Units in buildings of two or more18 plus or minus 28
- Share in buildings of two or more0.7 percent plus or minus 1.0
- Mobile homes0
- Median year structure built1960
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Atherton
How Atherton gets to work
- Workers 16 and over who commute1,609
- Commuting under 15 minutes481 plus or minus 130
- Share commuting under 15 minutes29.9 percent plus or minus 7.1
- Commuting 30 minutes or more531 plus or minus 131
- Share commuting 30 minutes or more33.0 percent plus or minus 6.9
- Drove alone44.9 percent
- Carpooled7.0 percent plus or minus 3.9
- Public transport1.7 percent plus or minus 1.9
- Walked3.8 percent plus or minus 2.5
- Worked from home40.8 percent
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Atherton
SBA loans in Atherton (7(a))
- Approvals1
- Gross approval$300,000
- Average approval$300,000
- Median approval$300,000
- Largest approval$300,000
- Jobs supported8
- Jobs per approval8.0
- Loans with a final outcome0
- Paid in full0
- Charged off0
- Median term120 months
- Share on real estate terms of 20 years or more0.0 percent
- Share to franchises0.0 percent
- Distinct lenders1
- Distinct industries by NAICS1
Counted by borrower city: approvals to borrowers whose address is in Atherton, in any county, FY2020 to FY2026. Only 0 loans have reached a final outcome, fewer than the 30 a charge-off rate needs, so no rate is published.
US Small Business Administration, 7(a) FOIA release, FY2020 to FY2026 year to date, as of 2026-06-30.
Atherton
Flood risk in Atherton
- NFIP communityTown of Atherton
- NFIP community number060312
- Participating in the NFIPYes
- Community Rating System classNone
- Currently effective map date(NSFHA)
The Town of Atherton participates in the National Flood Insurance Program as community 060312 and carries no Community Rating System class, so no CRS premium discount applies to it.
Federal Emergency Management Agency, NFIP Community Status Book (OpenFEMA), as of 2026-09-26.
San Mateo County, not Atherton
San Mateo County context, not Atherton figures
- Establishments in San Mateo County21,569
- Covered employment, San Mateo County416,422
- Average annual pay, San Mateo County$196,441
- Housing units permitted, San Mateo County1,088
Every figure in this section is published for San Mateo County as a whole and is not a measurement of Atherton.
All San Mateo County figures →
US Census Bureau, County Business Patterns, 2023. US Bureau of Labor Statistics, Quarterly Census of Employment and Wages, 2024 annual averages. US Census Bureau, Building Permits Survey, 2024 annual.
Coverage
What this page does not hold.
Parcel detail, zoning and the flood zone at an address are not on this page; they resolve at the address in the platform. How this page was built →
Common questions
Atherton questions, answered from the record.
How many people live in Atherton, California?
6,993, in 2,227 households. Atherton town covers 5.02 square miles of land, which is 1,394 people per square mile. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
What county is Atherton in?
San Mateo County, which holds 100.0 percent of the place by area. Source: US Census Bureau, cartographic boundary file, places, 2024 vintage.
What is the median household income in Atherton?
$250,001. The median owner-occupied home is valued at $2,000,001. Median gross rent is $3,501 per month. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
How much SBA lending goes to Atherton businesses?
1 7(a) approvals totaling $300,000 since FY2020, across 1 lenders, median approval $300,000. These count approvals to borrowers whose address is in Atherton, not projects sited inside the place boundary, and they are approvals recorded in the release rather than loans disbursed.
Do SBA loans to Atherton borrowers get paid back?
No rate is published for Atherton. Only 0 loans have reached a final outcome, fewer than the 30 a charge-off rate needs, so no rate is published. The counts are shown instead.
Is Atherton in the National Flood Insurance Program?
Yes. Atherton appears in the FEMA Community Status Book as Atherton, town of, community 060312, with no Community Rating System class, so no CRS discount applies. Whether a specific parcel sits in a mapped special flood hazard area is an address level question the platform answers.
Are the county figures on this page Atherton figures?
No, and they are labeled so. County Business Patterns, QCEW, the Building Permits Survey, BEA product and IRS migration are published for San Mateo County as a whole and there is no place level equivalent. They appear in one clearly marked section as context and are never presented as measurements of Atherton.
Is zoning published for Atherton?
No. Nothing on this page presents parcel level zoning.