Larkspur, California demographics

Larkspur, CA demographics: median age 51.2; 67.9% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Larkspur city, California · Incorporated city · GEOID 0640438. The survey estimates a population of 12,854 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Larkspur is 51.2 years, with a 90% margin of error of 1.9 years. There are 6,018 households (±280). Age and household distributions show how these totals are composed; they do not establish which neighborhood suits a particular person.

Every count and share is an estimate. “±” is a 90% margin of error (MOE); pp means percentage points. Derived shares use the category count divided by the named universe. Aggregated category MOEs and percentage MOEs are approximate. A margin larger than half its estimate is flagged as low precision. Blank source uncertainty is shown as unavailable, never zero.

Age distribution and sex

City, state and U.S. estimates · ACS 2020–2024
Measure / survey universe	City estimate ± MOE	State estimate ± MOE	U.S. estimate ± MOE
Median age Total population · years	51.2 ±1.9	37.9 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 12,854
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Under 18	2,137 ±297	16.6% ±2.3 pp	22.0%	22.0%
18–34	1,928 ±390	15.0% ±3.0 pp	23.9%	22.8%
35–64	5,521 ±547	43.0% ±4.3 pp	38.5%	38.0%
65 and older	3,268 ±391	25.4% ±3.0 pp	15.7%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 12,854
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Male	6,015 ±400	46.8% ±3.1 pp	49.9%	49.5%
Female	6,839 ±400	53.2% ±3.1 pp	50.1%	50.5%

The age groups are mutually exclusive and cover the entire population. The sex categories follow this ACS table’s published classification; they are not a survey of gender identity.

Race and Hispanic origin

Race · B02001 · ACS 2020–2024 Total population: 12,854
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
White alone	9,506 ±562	74.0% ±4.4 pp	39.7%	61.0%
Black or African American alone	91 ±128 · low precision	0.7% ±1.0 pp · low precision	5.4%	12.2%
American Indian and Alaska Native alone	0 ±21 · low precision	0.0% ±0.2 pp · low precision	1.3%	0.9%
Asian alone	866 ±290	6.7% ±2.3 pp	15.5%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±21 · low precision	0.0% ±0.2 pp · low precision	0.4%	0.2%
Some other race alone	865 ±324	6.7% ±2.5 pp	18.5%	7.1%
Two or more races	1,526 ±383	11.9% ±3.0 pp	19.2%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 12,854
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Not Hispanic or Latino	11,717 ±371	91.2% ±2.9 pp	59.8%	80.7%
Hispanic or Latino	1,137 ±368	8.8% ±2.9 pp	40.2%	19.3%

Hispanic origin and race are separate questions. People of Hispanic or Latino origin may be of any race and appear in both tables. Do not add the Hispanic share to race shares. Race alone and two-or-more-race groups are the mutually exclusive categories of the race table.

Household types, children and living alone

Household types · B11001 · ACS 2020–2024 Households: 6,018
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Married-couple family	2,332 ±243	38.8% ±3.6 pp	48.4%	46.9%
Other family: male householder, no spouse present	341 ±145	5.7% ±2.4 pp	6.3%	5.1%
Other family: female householder, no spouse present	503 ±138	8.4% ±2.3 pp	13.1%	12.2%
Nonfamily: householder living alone	2,501 ±424	41.6% ±6.8 pp	24.3%	28.7%
Nonfamily: householder not living alone	341 ±124	5.7% ±2.0 pp	7.9%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 6,018
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Households with people under 18	1,382 ±186	23.0% ±2.9 pp	32.4%	29.5%
Households without people under 18	4,636 ±368	77.0% ±5.0 pp	67.6%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 6,018
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
One-person nonfamily households	2,501 ±424	41.6% ±6.8 pp	24.3%	28.7%
Two-person households	1,753 ±267	29.1% ±4.2 pp	30.5%	33.8%
Three-person households	972 ±204	16.2% ±3.3 pp	16.7%	15.3%
Four-person households	590 ±176	9.8% ±2.9 pp	14.9%	12.6%
Five-person households	174 ±84	2.9% ±1.4 pp	7.7%	5.9%
Six-person households	19 ±31 · low precision	0.3% ±0.5 pp · low precision	3.3%	2.2%
Seven or more people	9 ±27 · low precision	0.1% ±0.4 pp · low precision	2.6%	1.4%

A family household contains related people under the Census definition. A nonfamily household can contain one person or unrelated people sharing a home. Households with children can also appear in the household-type and size tables, so those tables must not be added together. Household estimates exclude people living in group quarters from the household universe.

Nativity and languages spoken at home

Nativity · B05002 · ACS 2020–2024 Total population: 12,854
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Native	10,823 ±348	84.2% ±2.7 pp	73.0%	85.9%
Foreign born	2,031 ±343	15.8% ±2.7 pp	27.0%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 12,291
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
English only	10,031 ±418	81.6% ±3.2 pp	55.6%	77.7%
Spanish	825 ±296	6.7% ±2.4 pp	28.3%	13.6%
French, Haitian, or Cajun	52 ±48 · low precision	0.4% ±0.4 pp · low precision	0.4%	0.7%
German or other West Germanic	348 ±355 · low precision	2.8% ±2.9 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	56 ±58 · low precision	0.5% ±0.5 pp · low precision	0.7%	0.7%
Other Indo-European	550 ±175	4.5% ±1.4 pp	3.5%	2.0%
Korean	25 ±28 · low precision	0.2% ±0.2 pp · low precision	1.0%	0.3%
Chinese, including Mandarin and Cantonese	61 ±54 · low precision	0.5% ±0.4 pp · low precision	3.5%	1.1%
Vietnamese	0 ±21 · low precision	0.0% ±0.2 pp · low precision	1.5%	0.5%
Tagalog, including Filipino	69 ±73 · low precision	0.6% ±0.6 pp · low precision	2.1%	0.6%
Other Asian and Pacific Island	192 ±143 · low precision	1.6% ±1.2 pp · low precision	2.0%	1.1%
Arabic	59 ±92 · low precision	0.5% ±0.7 pp · low precision	0.6%	0.5%
Other and unspecified	23 ±31 · low precision	0.2% ±0.3 pp · low precision	0.6%	0.8%

Foreign born means not a U.S. citizen at birth; it includes naturalized citizens. Language categories describe speech at home among people age five and older. A language other than English at home does not establish that someone cannot speak English. This city page uses the published C16001 summary categories because the more detailed B16001 table does not provide these city records in this release.

Educational attainment

Highest completed education · B15003 · ACS 2020–2024 Population age 25 and older: 9,697
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Less than high school graduate	271 ±172 · low precision	2.8% ±1.8 pp · low precision	15.3%	10.4%
High school graduate or equivalency	750 ±201	7.7% ±2.1 pp	20.5%	26.0%
Some college, no degree	1,541 ±345	15.9% ±3.5 pp	19.3%	19.1%
Associate’s degree	552 ±157	5.7% ±1.6 pp	7.9%	8.8%
Bachelor’s degree	3,294 ±367	34.0% ±3.6 pp	22.7%	21.6%
Graduate or professional degree	3,289 ±422	33.9% ±4.2 pp	14.4%	14.1%

The denominator excludes residents under 25. Each person is counted in the highest attainment category they completed. This table does not measure the quality of local schools or the education level of every current student.

Residence one year earlier

Geographic mobility · B07003 · ACS 2020–2024 Population age 1 and older: 12,783
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Same house	11,500 ±367	90.0% ±2.8 pp	89.2%	87.7%
Moved within same county	665 ±246	5.2% ±1.9 pp	6.4%	6.3%
Moved from a different county in the same state	515 ±228	4.0% ±1.8 pp	2.6%	3.1%
Moved from a different state	61 ±46 · low precision	0.5% ±0.4 pp · low precision	1.1%	2.3%
Moved from abroad	42 ±44 · low precision	0.3% ±0.3 pp · low precision	0.7%	0.6%

These are respondents’ residence patterns one year before their survey response, pooled across the five-year window. They are not a net migration count for 2025. A person can move to a different house within the same city or county; moves within the same county should not automatically be interpreted as new arrivals to the city.

Health insurance, internet access and veterans

3.5% of Larkspur residents (±1.5 percentage points) had no health insurance coverage when surveyed, compared with 6.6% in California and 8.4% nationally. 96.6% of households subscribe to broadband of any type, including cellular data plans. A subscription is not the same as available service: the FCC National Broadband Map shows providers at a specific address.

City, state and U.S. shares · ACS 2020–2024
Measure	Larkspur	California	U.S.	Compared with California
People without health insurance Civilian noninstitutionalized population	3.5% ±1.5 pp	6.6%	8.4%	Lower
Households with a broadband subscription Households	96.6% ±2.4 pp	93.5%	91.0%	Higher
Veterans Civilian population age 18 and older	4.1% ±1.4 pp	4.3%	6.2%	Not statistically different

Reading and reusing the estimates

The Census table links above lead to the original detailed tables. Counts, source universes and uncertainty are retained in the source observation download for Larkspur . Compare these figures with the same survey window; do not compare one city’s five-year estimate with another city’s annual estimate as though they measured the same period. For methods, see uncertainty and denominator calculations.

Read Larkspur housing and cost context or return to the city profile.