Demographics of San Martin CDP, California

San Martin CDP, California had 6,954 ±805 people in the American Community Survey, averaged over 2020–2024. The Census Bureau’s yearly estimates do not cover it: they count incorporated places and towns, not census-designated places. Age, income, poverty, housing and origin below come from the survey, averaged over 2020–2024, each with its margin of error.

San Martin CDP, in four figures

6,954 ±805
Population: ACS 2020–⁠2024. The Bureau publishes no yearly estimate for a census-designated place.; 582nd
Among California's places: Of 661 of 5,000 or more, by the survey's count.; 46.8 ±6.0
Median age: ACS 2020–⁠2024.; $158,250 ±$25,838
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Age, 2020–2024

The median age is 46.8 ±6.0: for men 47.4 ±6.4 and for women 46.0 ±8.0. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in San Martin CDP by age, ACS 2020–2024
Age	People	Share	California	United States
Under 5	421 ±185	6.1% ±2.6	5.5% ±<0.1	5.6% ±<0.1
5 to 17	939 ±247	13.5% ±3.2	16.5% ±<0.1	16.3% ±<0.1
18 to 24	482 ±165	6.9% ±2.2	9.1% ±<0.1	9.1% ±<0.1
25 to 44	1,460 ±359	21.0% ±4.6	28.7% ±<0.1	26.9% ±<0.1
45 to 64	2,271 ±412	32.7% ±4.6	24.6% ±<0.1	24.8% ±<0.1
65 and over	1,381 ±275	19.9% ±3.2	15.7% ±<0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $158,250 ±$25,838, and income per person $62,333 ±$9,618, in 2024 dollars. The median is $99,122 ±$310 in California and $80,734 ±$166 in the United States.

Households by income

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Households in San Martin CDP by income, ACS 2020–2024
Household income	Households	Share	California	United States
Under $25,000	32 to 208	1.6% to 10.3%	12.5% ±0.1	14.6% ±<0.1
$25,000 to $49,999	33 to 183	1.7% to 9.1%	13.3% ±0.1	16.7% ±<0.1
$50,000 to $74,999	89 to 351	4.6% to 17.4%	13.0% ±0.1	15.5% ±<0.1
$75,000 to $99,999	93 to 295	4.7% to 14.6%	11.6% ±0.1	12.6% ±<0.1
$100,000 to $149,999	287 ±118	14.3% ±5.7	17.8% ±0.1	17.5% ±<0.1
$150,000 to $199,999	330 ±153	16.4% ±7.4	11.3% ±0.1	9.6% ±<0.1
$200,000 or more	748 ±182	37.3% ±8.2	20.5% ±0.1	13.4% ±0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in San Martin CDP by age, ACS 2020–2024
Age	Below poverty	Rate	California	United States
All ages	543 ±204	7.9% ±2.8	12.0% ±0.1	12.5% ±0.1
Under 18	3 to 117	0.4% to 8.6%	15.0% ±0.1	16.1% ±0.1
18 to 59	44 to 468	1.3% to 12.7%	11.0% ±0.1	11.6% ±0.1
60 and over	0 to 457	0.1% to 23.4%	11.5% ±0.1	11.0% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Housing, 2020–2024

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Housing in San Martin CDP, ACS 2020–2024
Measure	San Martin CDP	California	United States
Housing units	2,065 ±193	14,644,735 ±1,665	143,775,355 ±10,234
Occupied	97.2% ±4.1	92.5% ±0.1	89.9% ±0.1
Vacant	0% to 5.9%	7.5% ±0.1	10.1% ±0.1
Owner occupied	77.8% ±5.2	55.9% ±0.3	65.2% ±0.3
Renter occupied	22.2% ±8.5	44.1% ±0.2	34.8% ±0.1
Median home value	$1,430,600 ±$97,053	$734,700 ±$1,307	$332,700 ±$236
Median gross rent	$2,613 ±$526	$2,036 ±$5	$1,413 ±$2
Median year built	1975 ±3	1976 ±1	1980 ±1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in San Martin CDP by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	California	United States
Hispanic or Latino	2,965 ±665	42.6% ±8.2	40.2% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	3,098 ±538	44.5% ±5.8	33.8% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	0 to 543	0% to 7.8%	5.2% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	429 ±174	6.2% ±2.4	15.3% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	0 to 38	0% to 0.5%	0.3% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 19	0% to 0.3%	0.3% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 19	0% to 0.3%	0.6% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	82 to 334	1.2% to 4.8%	4.4% ±<0.1	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in San Martin CDP by place of birth and citizenship, ACS 2020–2024
Born	People	Share	California	United States
Born in the state	4,498 ±661	64.7% ±5.9	56.5% ±0.1	57.3% ±<0.1
Born in another state	1,119 ±302	16.1% ±3.9	15.0% ±0.1	26.9% ±<0.1
Born a citizen outside the states	38 to 260	0.6% to 3.7%	1.5% ±<0.1	1.7% ±<0.1
Born abroad	1,188 ±384	17.1% ±5.2	27.0% ±0.1	14.1% ±<0.1
Naturalized citizens	723 ±301	10.4% ±4.2	14.7% ±0.1	7.4% ±<0.1
Not citizens	465 ±197	6.7% ±2.7	12.3% ±0.1	6.8% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

San Martin CDP among the places of California

582nd of 661 places of 5,000 or more by the survey’s 2020–2024 count. Every one is listed on the California page.

Places of California near San Martin CDP in population, ACS 2020–2024
Place	ACS 2020–⁠2024
Fowler city	7,094 ±25
Piñon Hills CDP	7,065 ±873
Fort Bragg city	7,032 ±37
Atherton town	6,993 ±21
Silver Lakes CDP	6,977 ±1,110
San Martin CDP	6,954 ±805
Kentfield CDP	6,900 ±630
Contra Costa Centre CDP	6,893 ±729
Mira Monte CDP	6,888 ±1,006
Ben Lomond CDP	6,858 ±1,056
Loomis town	6,853 ±18

Rankings this appears in

No. 6 Places in California by median rent
No. 12 Places in California by median age
No. 14 Places by median rent
No. 21 Places in California by median home value
No. 26 Places in California by median household income
No. 33 Places by median home value

Sources

Census Bureau population estimates — incorporated places and New England towns — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Compiled automatically from Census Bureau population estimates — incorporated places and New England towns and American Community Survey 5-year estimates — table-based Summary File by a checked SQL query · Editor: Kian O'Connor · How this site is built

Data retrieved September 25, 2026