HomeCaliforniaSan Mateo CountySouth San Francisco city
South San Francisco city, California: commercial real estate data.
South San Francisco city is a Census city of 64,305 people across 9.20 square miles of land, in San Mateo County. Median household income is $136,578, 59.0 percent of occupied homes are owned, and the SBA record carries 75 7(a) approvals to borrowers here worth $51.4 m.
82 sourced place values · tier FULL · 9 sections · underlined figures are computed by MMCG Analytics, not published by the agency
South San Francisco
What South San Francisco is
- Census place typecity
- Land area9.2 sq mi
- Water area20.97 sq mi
- Population per square mile of land6,987
- 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.
South San Francisco
How many people live in South San Francisco
- Population64,305
- Median age43.2
- Population under 1811,075
- Share under 1817.2 percent
- Population 65 and over12,320
- Share 65 and over19.2 percent
- Households21,838
- Family households15,605
- Share of households that are families71.5 percent
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
South San Francisco
Income and work in South San Francisco
- Median household income$136,578
- Per capita income$62,611
- Civilian labor force36,569
- Employed35,544
- Unemployed1,025 plus or minus 235
- Unemployment rate2.8 percent plus or minus 0.6
- Adults 25 and over48,451
- Adults 25 and over with a high school diploma or higher86.0 percent
- Adults 25 and over with a bachelor degree or higher40.8 percent
- Adults 25 and over with a graduate degree12.6 percent
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
South San Francisco
Housing in South San Francisco
- Housing units23,515
- Occupied units21,838
- Vacant units1,677 plus or minus 360
- Vacancy rate7.1 percent plus or minus 1.5
- Owner occupied12,878
- Renter occupied8,960
- Ownership rate59.0 percent
- Median owner-occupied home value$1,188,800
- Median gross rent, monthly$2,802
- Annual rent as a share of median income24.6 percent
- Single family units16,018
- Share single family68.1 percent
- Units in buildings of two or more7,144
- Share in buildings of two or more30.4 percent
- Mobile homes273 plus or minus 164
- Median year structure built1965
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
South San Francisco
How South San Francisco gets to work
- Workers 16 and over who commute28,485
- Commuting under 15 minutes5,938
- Share commuting under 15 minutes20.8 percent
- Commuting 30 minutes or more10,618
- Share commuting 30 minutes or more37.3 percent
- Drove alone61.4 percent
- Carpooled11.4 percent
- Public transport5.5 percent plus or minus 1.4
- Walked1.9 percent plus or minus 0.6
- Worked from home17.4 percent
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
South San Francisco
SBA loans in South San Francisco (7(a))
- Approvals75
- Gross approval$51,368,600
- Average approval$684,915
- Median approval$250,000
- Ninetieth percentile approval$1,767,000
- Largest approval$4,550,000
- Jobs supported681
- Jobs per approval9.1
- Loans with a final outcome14
- Paid in full13
- Charged off1
- Charge-off rate over resolved loans7.1 percent
- Median term120 months
- Share on real estate terms of 20 years or more24.0 percent
- Share to franchises6.7 percent
- Distinct lenders28
- Distinct industries by NAICS58
US Small Business Administration, 7(a) FOIA release, FY2020 to FY2026 year to date, as of 2026-06-30.
South San Francisco
SBA loans in South San Francisco (504)
- Approvals51
- Gross approval$75,219,000
- Average approval$1,474,882
- Median approval$1,009,000
- Largest approval$5,500,000
- Jobs supported806
- Loans with a final outcome23
- Charged off0
- Charge-off rate over resolved loans0.0 percent
- Median term240 months
- Distinct CDCs8
US Small Business Administration, 504 FOIA release, FY2010 to FY2026 year to date, as of 2026-06-30.
South San Francisco
Flood risk in South San Francisco
- Listed NFIP communities1
- Of those, participating1
- NFIP community number065062
- Currently effective map date04/05/19
This community carries no Community Rating System class, so no CRS premium discount applies to it.
FEMA, National Flood Insurance Program Community Status Book, Community Status Book, as retrieved.
San Mateo County, not South San Francisco
San Mateo County context, not South San Francisco figures
These are San Mateo County figures. There is no place level equivalent published for any of them, so they are shown as the county backdrop and never as South San Francisco measurements.
- Establishments in San Mateo County21,569
- Employment at those establishments, San Mateo County477,938
- Covered employment, San Mateo County416,422
- Average annual pay, San Mateo County$196,441
- Average weekly wage, San Mateo County$3,778
- Housing units permitted, San Mateo County1,088
- Of those, single family, San Mateo County521
- County product, 2024, San Mateo County$217,017,754,000
- County product change over the prior year, San Mateo County11.1 percent
- Average income of an arriving household, San Mateo County$211,636
Every figure in this section is published for San Mateo County as a whole and is not a measurement of South San Francisco. It is here because a county backdrop is what a credit committee reads a place against, and it is labelled so that it can never be quoted as the place's own.
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. US Bureau of Economic Analysis, Regional, table CAGDP2, CAGDP2, through 2024. US Internal Revenue Service, Statistics of Income county migration flows, 2021 to 2022 filing years.
Coverage
What this page does not hold.
Every item below could be filled with a plausible figure. None of them is. On a page a lender may read, a number that cannot be traced is worse than an absence, so the absences are named.
- Parcel level detail, zoning and flood zone at an address are resolved in the platform, not on this page.
SBA figures count approvals to borrowers whose address is in the place. They are not approvals for projects inside the place boundary: the tape records a borrower city and a project county, and those can differ.
Common questions
South San Francisco questions, answered from the record.
How many people live in South San Francisco, California?
64,305, in 21,838 households. South San Francisco city covers 9.20 square miles of land, which is 6,987 people per square mile. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
What county is South San Francisco 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 South San Francisco?
$136,578. The median owner-occupied home is valued at $1,188,800. Median gross rent is $2,802 per month. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
How much SBA lending goes to South San Francisco businesses?
75 7(a) approvals totalling $51.4 m, across 28 lenders, median approval $250,000, plus 51 504 approvals worth $75.2 m. These count approvals to borrowers whose address is in South San Francisco, not projects sited inside the place boundary, and they are approvals recorded in the release rather than loans disbursed.
Do SBA loans to South San Francisco borrowers get paid back?
Of the 14 loans that have reached a final outcome, 13 were paid in full and 1 charged off, a charge off rate of 7.1 percent. Loans still running are excluded because they have not yet succeeded or failed.
Is South San Francisco in the National Flood Insurance Program?
Yes. South San Francisco appears in the FEMA Community Status Book as community 065062, 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 South San Francisco figures?
No, and they are labelled 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 South San Francisco.
Is zoning published for South San Francisco?
Not yet. The zoning layer is in build. Nothing on this page presents parcel level zoning.