Demographics & People

Los Angeles's population stands at 3,857,263 people, in 1,439,097 households. Population shrank 0.0% from 3,857,897 (2022) to 3,857,263 (2024). Median age 37.2 years. (1.0y younger than Los Angeles County). Children under 18 are 19% of the population. Population is 47% Hispanic or Latino and 28% White (non-Hispanic). The community is highly diverse (Simpson index 0.65). 57% of households are family-led. County is losing 260,422 residents per year (2022-2023). County health: 26% adult obesity, 11% smoke.

2.7 people per household (vs California avg 2.9).
43% non-family households (singles, roommates) (vs California 29%).
50 dependents per 100 working-age (youth + seniors / 18-64) (vs California 60).

Population & Trend

Population shrank 0.0% from 3,857,897 (2022) to 3,857,263 (2024). Estimated 2026 population: ~3,856,491 (extrapolated at -0.0%/yr trend).

Census data vintage	2024
County Population	10,014,009 people
Annual growth rate · Population change	-0.0%
Annual growth rate · Population (2022)	3,857,897
Annual growth rate · Population (2024)	3,857,263
Annual growth rate · Trend category	stable
Population	3,857,263 people (vs California 109,857)
Population Estimate	3,855,325

Sources: U.S. Census Bureau, ACS 5-Year · U.S. Census Bureau, ACS 5-Year DP05 · U.S. Census Bureau, Vintage Population Estimates · Census ACS 5-Year 2023, Table B01003 · Refreshed 2026-04-12

Age Distribution

Median age 37.2y is 1.7 years younger than the U.S. median (38.9y). Children under 18 make up 19% — below the U.S. share of ~22%.

Age Summary · Median age	37.2 years (at California median)
Age Summary · Children Pct	19.2%
Age Summary · Character	family-oriented
Age Summary · Total Pop	3,857,263
Age Summary · Under 18	739,163
Age Summary · 18 To 34	1,051,623
Age Summary · 35 To 64	1,516,887
Age Summary · 65 Plus	549,590
Median age	37.2 years (at California median)

Sources: Census ACS 5-Year 2024 — place-level B01001 query · Census ACS 5-Year 2023 · Refreshed 2026-04-29

Race, Ethnicity & Diversity

Of 3,857,263 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups). The Simpson diversity index is 0.65 (0 = single group, 1 = perfectly even distribution); this is read as highly diverse.

Diversity Index · Diversity index (Simpson)	65.2%
Diversity Index · Diversity label	highly diverse
Diversity Index · Groups counted	4
Diversity Index · Largest group share	44.9%
Asian population	11.9% (at California median)
Black population	8.1% (vs California 4.3%)
Hispanic or Latino population	47.2% (vs California 37.7%)
White (non-Hispanic) population	28.1% (at California median)

Sources: U.S. Census Bureau, ACS 5-Year DP05 · Census ACS 5-Year 2023 · Refreshed 2026-04-12

Ancestry

Self-reported ancestry from Census ACS — what residents report as their ethnic origin, separate from race. Counts can exceed population because people can list multiple ancestries.

Top (1)

(unnamed)

Hispanic Total

Sources: Census ACS 2022 B04006+B03001+B02001

Households & Family Composition

1,439,097 households. Averaging 2.6 people each — larger than the U.S. average of 2.5. 57% are family households — below the U.S. share of ~65%. Of 822,205 families, 26% are married couples with children.

Family households	826,693 households (vs California 24,803)
Households that are families	57.4% (vs California 71.1%)
Total households	1,439,097 households (vs California 37,381)

Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12

Residential Stability & Migration

How long residents have lived here and where they came from. 10.7% moved within the county in the past year — the U.S. baseline is roughly 8–10%. The surrounding county is losing 260,422 residents per year on net (IRS migration data).

Migration · People moving in (annual)	7,889,933
Migration · People moving out (annual)	8,150,355
Migration · Net migration (in − out)	-260,422

Sources: IRS SOI Migration 2021-2022 · Refreshed 2026-04-12