Arroyo Grande, California demographics

Arroyo Grande, CA demographics: median age 45.8; 45.3% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Arroyo Grande city, California · Incorporated city · GEOID 0602868. The survey estimates a population of 18,372 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Arroyo Grande is 45.8 years, with a 90% margin of error of 4.1 years. There are 7,712 households (±479). 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	45.8 ±4.1	37.9 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 18,372
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Under 18	3,733 ±545	20.3% ±3.0 pp	22.0%	22.0%
18–34	3,398 ±529	18.5% ±2.9 pp	23.9%	22.8%
35–64	6,206 ±617	33.8% ±3.4 pp	38.5%	38.0%
65 and older	5,035 ±540	27.4% ±2.9 pp	15.7%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 18,372
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Male	8,119 ±371	44.2% ±2.0 pp	49.9%	49.5%
Female	10,253 ±368	55.8% ±2.0 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: 18,372
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
White alone	13,074 ±807	71.2% ±4.4 pp	39.7%	61.0%
Black or African American alone	49 ±42 · low precision	0.3% ±0.2 pp · low precision	5.4%	12.2%
American Indian and Alaska Native alone	66 ±49 · low precision	0.4% ±0.3 pp · low precision	1.3%	0.9%
Asian alone	694 ±226	3.8% ±1.2 pp	15.5%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±21 · low precision	0.0% ±0.1 pp · low precision	0.4%	0.2%
Some other race alone	924 ±513 · low precision	5.0% ±2.8 pp · low precision	18.5%	7.1%
Two or more races	3,565 ±602	19.4% ±3.3 pp	19.2%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 18,372
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Not Hispanic or Latino	14,521 ±783	79.0% ±4.3 pp	59.8%	80.7%
Hispanic or Latino	3,851 ±784	21.0% ±4.3 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: 7,712
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Married-couple family	4,276 ±298	55.4% ±1.8 pp	48.4%	46.9%
Other family: male householder, no spouse present	165 ±95 · low precision	2.1% ±1.2 pp · low precision	6.3%	5.1%
Other family: female householder, no spouse present	583 ±186	7.6% ±2.4 pp	13.1%	12.2%
Nonfamily: householder living alone	2,300 ±431	29.8% ±5.3 pp	24.3%	28.7%
Nonfamily: householder not living alone	388 ±172	5.0% ±2.2 pp	7.9%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 7,712
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Households with people under 18	1,913 ±261	24.8% ±3.0 pp	32.4%	29.5%
Households without people under 18	5,799 ±648	75.2% ±7.0 pp	67.6%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 7,712
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
One-person nonfamily households	2,300 ±431	29.8% ±5.3 pp	24.3%	28.7%
Two-person households	2,985 ±408	38.7% ±4.7 pp	30.5%	33.8%
Three-person households	992 ±271	12.9% ±3.4 pp	16.7%	15.3%
Four-person households	791 ±208	10.3% ±2.6 pp	14.9%	12.6%
Five-person households	370 ±131	4.8% ±1.7 pp	7.7%	5.9%
Six-person households	173 ±152 · low precision	2.2% ±2.0 pp · low precision	3.3%	2.2%
Seven or more people	101 ±82 · low precision	1.3% ±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: 18,372
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Native	17,024 ±302	92.7% ±1.6 pp	73.0%	85.9%
Foreign born	1,348 ±299	7.3% ±1.6 pp	27.0%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 17,415
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
English only	15,802 ±456	90.7% ±2.1 pp	55.6%	77.7%
Spanish	946 ±282	5.4% ±1.6 pp	28.3%	13.6%
French, Haitian, or Cajun	0 ±21 · low precision	0.0% ±0.1 pp · low precision	0.4%	0.7%
German or other West Germanic	89 ±60 · low precision	0.5% ±0.3 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	87 ±101 · low precision	0.5% ±0.6 pp · low precision	0.7%	0.7%
Other Indo-European	36 ±44 · low precision	0.2% ±0.3 pp · low precision	3.5%	2.0%
Korean	1 ±3 · low precision	0.0% ±0.0 pp · low precision	1.0%	0.3%
Chinese, including Mandarin and Cantonese	245 ±150 · low precision	1.4% ±0.9 pp · low precision	3.5%	1.1%
Vietnamese	1 ±3 · low precision	0.0% ±0.0 pp · low precision	1.5%	0.5%
Tagalog, including Filipino	116 ±79 · low precision	0.7% ±0.5 pp · low precision	2.1%	0.6%
Other Asian and Pacific Island	85 ±76 · low precision	0.5% ±0.4 pp · low precision	2.0%	1.1%
Arabic	7 ±11 · low precision	0.0% ±0.1 pp · low precision	0.6%	0.5%
Other and unspecified	0 ±21 · low precision	0.0% ±0.1 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: 13,319
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Less than high school graduate	639 ±205	4.8% ±1.5 pp	15.3%	10.4%
High school graduate or equivalency	1,967 ±338	14.8% ±2.5 pp	20.5%	26.0%
Some college, no degree	3,119 ±455	23.4% ±3.3 pp	19.3%	19.1%
Associate’s degree	1,567 ±343	11.8% ±2.5 pp	7.9%	8.8%
Bachelor’s degree	3,678 ±498	27.6% ±3.5 pp	22.7%	21.6%
Graduate or professional degree	2,349 ±358	17.6% ±2.6 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: 18,128
Category	Count ± MOE	Share ± MOE (pp)	California	U.S.
Same house	15,330 ±937	84.6% ±5.1 pp	89.2%	87.7%
Moved within same county	2,019 ±859	11.1% ±4.7 pp	6.4%	6.3%
Moved from a different county in the same state	635 ±313	3.5% ±1.7 pp	2.6%	3.1%
Moved from a different state	133 ±190 · low precision	0.7% ±1.0 pp · low precision	1.1%	2.3%
Moved from abroad	11 ±18 · low precision	0.1% ±0.1 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

4.7% of Arroyo Grande residents (±2.1 percentage points) had no health insurance coverage when surveyed, compared with 6.6% in California and 8.4% nationally. 91.1% 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	Arroyo Grande	California	U.S.	Compared with California
People without health insurance Civilian noninstitutionalized population	4.7% ±2.1 pp	6.6%	8.4%	Not statistically different
Households with a broadband subscription Households	91.1% ±1.9 pp	93.5%	91.0%	Lower
Veterans Civilian population age 18 and older	6.0% ±1.2 pp	4.3%	6.2%	Higher

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 Arroyo Grande . 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 Arroyo Grande housing and cost context or return to the city profile.