Demographics · CA
Antioch, CA demographics: 116,477 residents, with a median age of 38.4 years, from the U.S. Census Bureau's American Community Survey 2020–2024 (5-year estimates).
116,477people are estimated in Antioch, at a median age of 38.4 years (American Community Survey 2020–2024 period estimate)
Median age 38.4 years — younger than the U.S. median of 38.9.
ACS 2020–2024 5-year · ACS 5-Year Estimates 2020-2024 (released 2026-01-29)
In Antioch, the largest race group is White (27.0%); 35.6% of residents are Hispanic or Latino (of any race); 24.6% were born outside the United States.
ACS 2020–2024 · B01001 / B01002
The estimated median age in Antioch is 38.4 years (±1.1), compared with the U.S. estimate of 38.9 ± 0.1 years. These are descriptive comparisons, not significance tests. The population is 47.9% ± 0.9 percentage points male and 52.1% ± 0.9 percentage points female. The largest age band is 5 to 17 at 16.9%.
| Age band | People | Share | ± margin |
|---|---|---|---|
| Under 5 | 6,849 | 5.9% ± 0.6 percentage points | ±752 |
| 5 to 17 | 19,701 | 16.9% ± 1.1 percentage points | ±1,271 |
| 18 to 24 | 9,990 | 8.6% ± 0.8 percentage points | ±891 |
| 25 to 34 | 16,128 | 13.8% ± 1.0 percentage points | ±1,142 |
| 35 to 44 | 16,051 | 13.8% ± 0.9 percentage points | ±1,074 |
| 45 to 54 | 14,685 | 12.6% ± 1.0 percentage points | ±1,119 |
| 55 to 64 | 16,436 | 14.1% ± 1.0 percentage points | ±1,131 |
| 65 to 74 | 11,109 | 9.5% ± 0.8 percentage points | ±954 |
| 75 and over | 5,528 | 4.7% ± 0.5 percentage points | ±615 |
Median age by sex: 38.2 (male) · 38.6 (female).
Shares may not sum to 100% due to rounding. Source: U.S. Census Bureau, ACS 5-Year 2020–2024 (B01001 sex by age, B01002 median age) · place-grain · margins of error at the 90% confidence level · methodology →
ACS 2020–2024 · B02001 / B03003
The largest race group in Antioch is White at 27.0% of the population. Separately, 35.6% of residents are Hispanic or Latino of any race.Race and Hispanic origin are two different questions on the census form, so their shares are reported separately and are not additive.
| Race (alone, or two or more) | People | Share | ± margin |
|---|---|---|---|
| White alone | 31,444 | 27.0% ± 1.5 percentage points | ±1,770 |
| Black or African American alone | 22,025 | 18.9% ± 1.7 percentage points | ±1,993 |
| American Indian & Alaska Native alone | 1,913 | 1.6% ± 0.5 percentage points | ±626 |
| Asian alone | 16,549 | 14.2% ± 1.4 percentage points | ±1,676 |
| Native Hawaiian & Pacific Islander alone | 1,325 | 1.1% ± 0.5 percentage points | ±607 |
| Some other race alone | 21,364 | 18.3% ± 1.6 percentage points | ±1,901 |
| Two or more races | 21,857 | 18.8% ± 1.7 percentage points | ±2,038 |
| Hispanic or Latino (of any race) | 41,441 | 35.6% ± 2.1 percentage points | ±2,428 |
Race shares may not sum to 100% due to rounding; race and Hispanic origin are separate questions and are not additive. Source: U.S. Census Bureau, ACS 5-Year 2020–2024 (B02001 race, B03003 Hispanic or Latino origin) · place-grain · margins of error at the 90% confidence level · methodology →
ACS 2020–2024 · B11001 / B25010
Antioch has 37,381 households. 76.2% are family households and 17.1% are people living alone. The average household holds 3.09 people.
Total households
37,381
ACS 2020–2024 5-yr · B11001
Avg household size
3.09
ACS 2020–2024 5-yr · B25010 · ±0.08
Family households
76.2% ± 1.3 percentage points
Share of all households · B11001
Living alone
17.1% ± 2.4 percentage points
Share of all households · B11001
| Household type | Households | ± margin |
|---|---|---|
| Total households | 37,381 | ±1,018 |
| Family households | 28,469 | ±913 |
| Nonfamily households | 8,912 | ±1,184 |
| Householder living alone | 6,398 | ±931 |
Source: U.S. Census Bureau, ACS 5-Year 2020–2024 (B11001 household type, B25010 average household size) · place-grain · methodology →
ACS 2020–2024 · B05002 / C16001
24.6% of Antioch residents were born outside the United States. 62.3% of residents age 5 and over speak only English at home. The most-spoken non-English language at home is Spanish (23.4%).
| Measure | Value | Source / grain |
|---|---|---|
| Foreign-born share | 24.6% ± 1.3 percentage points | 28,702 people · B05002 |
| Speak only English at home (age 5+) | 62.3% ± 1.8 percentage points | C16001 |
| Top non-English language at home | 23.4% ± 1.7 percentage points | Spanish · 25,697 speakers · C16001 |
Source: U.S. Census Bureau, ACS 5-Year 2020–2024 (B05002 place of birth, C16001 language spoken at home) · place-grain · methodology →
ACS 2020–2024 · B15003
23.9% ± 1.4 percentage points of adults age 25 and over in Antioch hold a bachelor's degree or higher. The U.S. estimate is 35.7%.
| Measure | Value | Source / grain |
|---|---|---|
| Bachelor's degree or higher (age 25+) | 23.9% | B15003 lines 22–25 over line 1 · place-grain |
Source: U.S. Census Bureau, ACS 5-Year 2020–2024 (B15003 educational attainment, population 25+) · place-grain · methodology →
Sources · provenance
The GEOID for Antioch is 0602252. Every figure on this page is a place-grain American Community Survey 5-Year 2020–2024 estimate (ACS 5-Year Estimates 2020-2024 (released 2026-01-29)) shown with its margin of error. Full per-dataset detail: /sources/.