St. Helena, California demographics

St. Helena, CA demographics: median age 48.9; 56.9% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · St. Helena city, California · Incorporated city · GEOID 0664140. The survey estimates a population of 5,318 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in St. Helena is 48.9 years, with a 90% margin of error of 5.9 years. There are 2,341 households (±139). 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	48.9 ±5.9	37.9 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 5,318
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Under 18	1,051 ±206	19.8% ±3.9 pp	22.0%	22.0%
18–34	593 ±136	11.2% ±2.6 pp	23.9%	22.8%
35–64	1,935 ±336	36.4% ±6.3 pp	38.5%	38.0%
65 and older	1,739 ±257	32.7% ±4.8 pp	15.7%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 5,318
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Male	2,598 ±169	48.9% ±3.2 pp	49.9%	49.5%
Female	2,720 ±170	51.1% ±3.2 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: 5,318
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
White alone	3,577 ±306	67.3% ±5.7 pp	39.7%	61.0%
Black or African American alone	23 ±30 · low precision	0.4% ±0.6 pp · low precision	5.4%	12.2%
American Indian and Alaska Native alone	38 ±41 · low precision	0.7% ±0.8 pp · low precision	1.3%	0.9%
Asian alone	93 ±55 · low precision	1.7% ±1.0 pp · low precision	15.5%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±19 · low precision	0.0% ±0.4 pp · low precision	0.4%	0.2%
Some other race alone	991 ±355	18.6% ±6.7 pp	18.5%	7.1%
Two or more races	596 ±217	11.2% ±4.1 pp	19.2%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 5,318
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Not Hispanic or Latino	3,762 ±310	70.7% ±5.8 pp	59.8%	80.7%
Hispanic or Latino	1,556 ±307	29.3% ±5.8 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: 2,341
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Married-couple family	1,284 ±172	54.8% ±6.6 pp	48.4%	46.9%
Other family: male householder, no spouse present	84 ±56 · low precision	3.6% ±2.4 pp · low precision	6.3%	5.1%
Other family: female householder, no spouse present	258 ±86	11.0% ±3.6 pp	13.1%	12.2%
Nonfamily: householder living alone	586 ±146	25.0% ±6.1 pp	24.3%	28.7%
Nonfamily: householder not living alone	129 ±60	5.5% ±2.5 pp	7.9%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 2,341
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Households with people under 18	760 ±194	32.5% ±8.1 pp	32.4%	29.5%
Households without people under 18	1,581 ±227	67.5% ±8.8 pp	67.6%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 2,341
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
One-person nonfamily households	586 ±146	25.0% ±6.1 pp	24.3%	28.7%
Two-person households	952 ±177	40.7% ±7.2 pp	30.5%	33.8%
Three-person households	412 ±207 · low precision	17.6% ±8.8 pp · low precision	16.7%	15.3%
Four-person households	256 ±80	10.9% ±3.4 pp	14.9%	12.6%
Five-person households	106 ±68 · low precision	4.5% ±2.9 pp · low precision	7.7%	5.9%
Six-person households	18 ±28 · low precision	0.8% ±1.2 pp · low precision	3.3%	2.2%
Seven or more people	11 ±25 · low precision	0.5% ±1.1 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: 5,318
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Native	3,982 ±291	74.9% ±5.5 pp	73.0%	85.9%
Foreign born	1,336 ±287	25.1% ±5.4 pp	27.0%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 5,093
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
English only	3,475 ±363	68.2% ±7.0 pp	55.6%	77.7%
Spanish	1,304 ±264	25.6% ±5.2 pp	28.3%	13.6%
French, Haitian, or Cajun	102 ±67 · low precision	2.0% ±1.3 pp · low precision	0.4%	0.7%
German or other West Germanic	0 ±19 · low precision	0.0% ±0.4 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	141 ±174 · low precision	2.8% ±3.4 pp · low precision	0.7%	0.7%
Other Indo-European	41 ±42 · low precision	0.8% ±0.8 pp · low precision	3.5%	2.0%
Korean	21 ±23 · low precision	0.4% ±0.5 pp · low precision	1.0%	0.3%
Chinese, including Mandarin and Cantonese	0 ±19 · low precision	0.0% ±0.4 pp · low precision	3.5%	1.1%
Vietnamese	0 ±19 · low precision	0.0% ±0.4 pp · low precision	1.5%	0.5%
Tagalog, including Filipino	9 ±14 · low precision	0.2% ±0.3 pp · low precision	2.1%	0.6%
Other Asian and Pacific Island	0 ±19 · low precision	0.0% ±0.4 pp · low precision	2.0%	1.1%
Arabic	0 ±19 · low precision	0.0% ±0.4 pp · low precision	0.6%	0.5%
Other and unspecified	0 ±19 · low precision	0.0% ±0.4 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: 4,059
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Less than high school graduate	490 ±191	12.1% ±4.7 pp	15.3%	10.4%
High school graduate or equivalency	450 ±136	11.1% ±3.3 pp	20.5%	26.0%
Some college, no degree	566 ±147	13.9% ±3.6 pp	19.3%	19.1%
Associate’s degree	243 ±109	6.0% ±2.7 pp	7.9%	8.8%
Bachelor’s degree	1,446 ±325	35.6% ±7.9 pp	22.7%	21.6%
Graduate or professional degree	864 ±173	21.3% ±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: 5,204
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Same house	4,844 ±163	93.1% ±2.6 pp	89.2%	87.7%
Moved within same county	83 ±62 · low precision	1.6% ±1.2 pp · low precision	6.4%	6.3%
Moved from a different county in the same state	226 ±127 · low precision	4.3% ±2.4 pp · low precision	2.6%	3.1%
Moved from a different state	19 ±25 · low precision	0.4% ±0.5 pp · low precision	1.1%	2.3%
Moved from abroad	32 ±28 · low precision	0.6% ±0.5 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

2.6% of St. Helena residents (±1.5 percentage points) had no health insurance coverage when surveyed, compared with 6.6% in California and 8.4% nationally. 97.0% 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	St. Helena	California	U.S.	Compared with California
People without health insurance Civilian noninstitutionalized population	2.6% ±1.5 pp · low precision	6.6%	8.4%	Lower
Households with a broadband subscription Households	97.0% ±1.3 pp	93.5%	91.0%	Higher
Veterans Civilian population age 18 and older	4.5% ±1.8 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 St. Helena . 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 St. Helena housing and cost context or return to the city profile.