Hillsborough, California demographics

Hillsborough, CA demographics: median age 47.0; 83.8% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Hillsborough town, California · Incorporated town · GEOID 0633798. The survey estimates a population of 11,099 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Hillsborough is 47.0 years, with a 90% margin of error of 2.3 years. There are 3,610 households (±179). 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	47.0 ±2.3	37.9 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 11,099
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Under 18	2,963 ±395	26.7% ±3.6 pp	22.0%	22.0%
18–34	1,142 ±275	10.3% ±2.5 pp	23.9%	22.8%
35–64	4,732 ±458	42.6% ±4.1 pp	38.5%	38.0%
65 and older	2,262 ±273	20.4% ±2.5 pp	15.7%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 11,099
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Male	5,556 ±277	50.1% ±2.5 pp	49.9%	49.5%
Female	5,543 ±276	49.9% ±2.5 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: 11,099
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
White alone	5,901 ±560	53.2% ±5.0 pp	39.7%	61.0%
Black or African American alone	56 ±59 · low precision	0.5% ±0.5 pp · low precision	5.4%	12.2%
American Indian and Alaska Native alone	6 ±9 · low precision	0.1% ±0.1 pp · low precision	1.3%	0.9%
Asian alone	3,712 ±528	33.4% ±4.8 pp	15.5%	6.0%
Native Hawaiian and Other Pacific Islander alone	15 ±27 · low precision	0.1% ±0.2 pp · low precision	0.4%	0.2%
Some other race alone	279 ±288 · low precision	2.5% ±2.6 pp · low precision	18.5%	7.1%
Two or more races	1,130 ±267	10.2% ±2.4 pp	19.2%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 11,099
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Not Hispanic or Latino	10,598 ±235	95.5% ±2.1 pp	59.8%	80.7%
Hispanic or Latino	501 ±233	4.5% ±2.1 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: 3,610
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Married-couple family	2,758 ±179	76.4% ±3.2 pp	48.4%	46.9%
Other family: male householder, no spouse present	117 ±91 · low precision	3.2% ±2.5 pp · low precision	6.3%	5.1%
Other family: female householder, no spouse present	144 ±78 · low precision	4.0% ±2.2 pp · low precision	13.1%	12.2%
Nonfamily: householder living alone	508 ±164	14.1% ±4.5 pp	24.3%	28.7%
Nonfamily: householder not living alone	83 ±38	2.3% ±1.0 pp	7.9%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 3,610
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Households with people under 18	1,364 ±140	37.8% ±3.4 pp	32.4%	29.5%
Households without people under 18	2,246 ±260	62.2% ±6.5 pp	67.6%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 3,610
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
One-person nonfamily households	508 ±164	14.1% ±4.5 pp	24.3%	28.7%
Two-person households	1,104 ±168	30.6% ±4.4 pp	30.5%	33.8%
Three-person households	649 ±194	18.0% ±5.3 pp	16.7%	15.3%
Four-person households	944 ±177	26.1% ±4.7 pp	14.9%	12.6%
Five-person households	315 ±95	8.7% ±2.6 pp	7.7%	5.9%
Six-person households	83 ±48 · low precision	2.3% ±1.3 pp · low precision	3.3%	2.2%
Seven or more people	7 ±25 · low precision	0.2% ±0.7 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: 11,099
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Native	8,088 ±402	72.9% ±3.6 pp	73.0%	85.9%
Foreign born	3,011 ±399	27.1% ±3.6 pp	27.0%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 10,732
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
English only	7,358 ±630	68.6% ±5.8 pp	55.6%	77.7%
Spanish	445 ±211	4.1% ±2.0 pp	28.3%	13.6%
French, Haitian, or Cajun	49 ±39 · low precision	0.5% ±0.4 pp · low precision	0.4%	0.7%
German or other West Germanic	45 ±65 · low precision	0.4% ±0.6 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	417 ±498 · low precision	3.9% ±4.6 pp · low precision	0.7%	0.7%
Other Indo-European	344 ±183 · low precision	3.2% ±1.7 pp · low precision	3.5%	2.0%
Korean	59 ±61 · low precision	0.5% ±0.6 pp · low precision	1.0%	0.3%
Chinese, including Mandarin and Cantonese	1,542 ±395	14.4% ±3.7 pp	3.5%	1.1%
Vietnamese	71 ±83 · low precision	0.7% ±0.8 pp · low precision	1.5%	0.5%
Tagalog, including Filipino	266 ±162 · low precision	2.5% ±1.5 pp · low precision	2.1%	0.6%
Other Asian and Pacific Island	97 ±53 · low precision	0.9% ±0.5 pp · low precision	2.0%	1.1%
Arabic	28 ±44 · low precision	0.3% ±0.4 pp · low precision	0.6%	0.5%
Other and unspecified	11 ±17 · low precision	0.1% ±0.2 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: 7,563
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Less than high school graduate	69 ±77 · low precision	0.9% ±1.0 pp · low precision	15.3%	10.4%
High school graduate or equivalency	281 ±128	3.7% ±1.7 pp	20.5%	26.0%
Some college, no degree	653 ±174	8.6% ±2.3 pp	19.3%	19.1%
Associate’s degree	222 ±85	2.9% ±1.1 pp	7.9%	8.8%
Bachelor’s degree	2,734 ±359	36.1% ±4.6 pp	22.7%	21.6%
Graduate or professional degree	3,604 ±400	47.7% ±5.0 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: 11,080
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Same house	10,051 ±418	90.7% ±3.8 pp	89.2%	87.7%
Moved within same county	590 ±314 · low precision	5.3% ±2.8 pp · low precision	6.4%	6.3%
Moved from a different county in the same state	226 ±145 · low precision	2.0% ±1.3 pp · low precision	2.6%	3.1%
Moved from a different state	40 ±36 · low precision	0.4% ±0.3 pp · low precision	1.1%	2.3%
Moved from abroad	173 ±180 · low precision	1.6% ±1.6 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

1.0% of Hillsborough residents (±0.7 percentage points) had no health insurance coverage when surveyed, compared with 6.6% in California and 8.4% nationally. 97.8% 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	Hillsborough	California	U.S.	Compared with California
People without health insurance Civilian noninstitutionalized population	1.0% ±0.7 pp · low precision	6.6%	8.4%	Lower
Households with a broadband subscription Households	97.8% ±1.2 pp	93.5%	91.0%	Higher
Veterans Civilian population age 18 and older	2.0% ±1.0 pp	4.3%	6.2%	Lower

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 Hillsborough . 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 Hillsborough housing and cost context or return to the city profile.