HomeCaliforniaSan Diego CountySan Marcos
San Marcos, California: commercial real estate data.
San Marcos is a Census city of 94,882 people across 24.57 square miles of land, in San Diego County. Median household income is $109,377, 63.7 percent of occupied homes are owned, and the SBA record carries 182 7(a) approvals to borrowers here worth $107.3 m since FY2020.
Underlined figures are computed by MMCG Analytics, not published by the agency.
San Marcos
What San Marcos is
- Census place typecity
- Land area24.57 sq mi
- Water area0.02 sq mi
- Population per square mile of land3,862
- County holding the largest share of its areaSan Diego 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.
San Marcos
How many people live in San Marcos
- Population94,882
- Median age36.8
- Population under 1823,919
- Share under 1825.2 percent
- Population 65 and over12,506
- Share 65 and over13.2 percent
- Households31,350
- Family households23,400
- Share of households that are families74.6 percent
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
San Marcos
Income and work in San Marcos
- Median household income$109,377
- Per capita income$47,841
- Civilian labor force48,420
- Employed46,169
- Unemployed2,251
- Unemployment rate4.6 percent
- Adults 25 and over61,920
- Adults 25 and over with a high school diploma or higher88.2 percent
- Adults 25 and over with a bachelor degree or higher43.8 percent
- Adults 25 and over with a graduate degree15.5 percent
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
San Marcos
Housing in San Marcos
- Housing units32,557
- Occupied units31,350
- Vacant units1,207 plus or minus 325
- Vacancy rate3.7 percent plus or minus 1.0
- Owner occupied19,976
- Renter occupied11,374
- Ownership rate63.7 percent
- Median owner-occupied home value$868,000
- Median gross rent, monthly$2,348
- Annual rent as a share of median income25.8 percent
- Single family units20,319
- Share single family62.4 percent
- Units in buildings of two or more8,931
- Share in buildings of two or more27.4 percent
- Mobile homes3,282
- Median year structure built1996
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
San Marcos
How San Marcos gets to work
- Workers 16 and over who commute36,308
- Commuting under 15 minutes7,412
- Share commuting under 15 minutes20.4 percent
- Commuting 30 minutes or more15,242
- Share commuting 30 minutes or more42.0 percent
- Drove alone67.7 percent
- Carpooled8.0 percent
- Public transport0.5 percent plus or minus 0.2
- Walked1.5 percent plus or minus 0.5
- Worked from home20.5 percent
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
San Marcos
SBA loans in San Marcos (7(a))
- Approvals182
- Gross approval$107,329,700
- Average approval$589,724
- Median approval$300,000
- Ninetieth percentile approval$1,235,100
- Largest approval$5,000,000
- Jobs supported1,833
- Jobs per approval10.1
- Loans with a final outcome27
- Paid in full26
- Charged off1
- Median term120 months
- Share on real estate terms of 20 years or more16.5 percent
- Share to franchises8.8 percent
- Distinct lenders50
- Distinct industries by NAICS107
Counted by borrower city: approvals to borrowers whose address is in San Marcos, in any county, FY2020 to FY2026. Only 27 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.
San Marcos
SBA loans in San Marcos (504)
- Approvals94
- Gross approval$74,136,000
- Average approval$788,681
- Median approval$603,500
- Largest approval$3,829,000
- Jobs supported1,184
- Loans with a final outcome33
- Charged off0
- Charge-off rate over resolved loans0.0 percent
- Median term300 months
- Distinct CDCs8
Counted by borrower city: approvals to borrowers whose address is in San Marcos, in any county, FY2010 to FY2026.
US Small Business Administration, 504 FOIA release, FY2010 to FY2026 year to date, as of 2026-06-30.
San Marcos
Flood risk in San Marcos
- NFIP communityCity of San Marcos
- NFIP community number060296
- Participating in the NFIPYes
- Community Rating System classNone
- Currently effective map date03/03/26
The City of San Marcos participates in the National Flood Insurance Program as community 060296 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 Diego County, not San Marcos
San Diego County context, not San Marcos figures
- Establishments in San Diego County93,407
- Covered employment, San Diego County1,536,541
- Average annual pay, San Diego County$82,854
- Housing units permitted, San Diego County11,572
Every figure in this section is published for San Diego County as a whole and is not a measurement of San Marcos.
All San Diego 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
San Marcos questions, answered from the record.
How many people live in San Marcos, California?
94,882, in 31,350 households. San Marcos city covers 24.57 square miles of land, which is 3,862 people per square mile. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
What county is San Marcos in?
San Diego 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 San Marcos?
$109,377. The median owner-occupied home is valued at $868,000. Median gross rent is $2,348 per month. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
How much SBA lending goes to San Marcos businesses?
182 7(a) approvals totaling $107.3 m since FY2020, across 50 lenders, median approval $300,000, plus 94 504 approvals worth $74.1 m since FY2010. These count approvals to borrowers whose address is in San Marcos, not projects sited inside the place boundary, and they are approvals recorded in the release rather than loans disbursed.
Do SBA loans to San Marcos borrowers get paid back?
No rate is published for San Marcos. Only 27 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 San Marcos in the National Flood Insurance Program?
Yes. San Marcos appears in the FEMA Community Status Book as San Marcos, city of, community 060296, 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 San Marcos figures?
No, and they are labeled so. County Business Patterns, QCEW, the Building Permits Survey, BEA product and IRS migration are published for San Diego 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 San Marcos.
Is zoning published for San Marcos?
No. Nothing on this page presents parcel level zoning.
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