Demographics & People

990,138 people call San Jose home, in 328,550 households. Population grew 0.0% from 990,054 (2022) to 990,138 (2024). Median age 38.2 years. (0.6y older than California). Children under 18 are 20% of the population. Population is 39% Asian and 31% Hispanic or Latino. The community is highly diverse (Simpson index 0.68). 71% of households are family-led. County is losing 64,883 residents per year (2022-2023). County health: 22% adult obesity, 9% smoke.

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

Population & Trend

Population grew 0.0% from 990,054 (2022) to 990,138 (2024) — close to the U.S. annual rate of ~0.6%/yr. Estimated 2026 population: ~990,237 (extrapolated at 0.0%/yr trend).

Census data vintage	2024
County Population	1,936,259 people
Annual growth rate · Population change	1.0%
Annual growth rate · Population (2022)	990,054
Annual growth rate · Population (2024)	990,138
Annual growth rate · Population growing	Yes
Annual growth rate · Trend category	stable
Population	990,138 people (vs California 109,857)
Population Estimate	990,384

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 38.2y is 0.7 years younger than the U.S. median (38.9y). Children under 18 make up 20% — below the U.S. share of ~22%.

Age Summary · Median age	38.2 years (vs California 37.2y)
Age Summary · Children Pct	20.5%
Age Summary · Character	family-oriented
Age Summary · Total Pop	990,138
Age Summary · Under 18	202,568
Age Summary · 18 To 34	244,078
Age Summary · 35 To 64	399,656
Age Summary · 65 Plus	143,836
Median age	38.2 years (vs California 37.2y)

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

Race, Ethnicity & Diversity

Of 990,138 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups). The Simpson diversity index is 0.68 (0 = single group, 1 = perfectly even distribution); this is read as highly diverse.

Diversity Index · Diversity index (Simpson)	68.0%
Diversity Index · Diversity label	highly diverse
Diversity Index · Groups counted	4
Diversity Index · Largest group share	38.0%
Asian population	39.2% (vs California 11.9%)
Black population	2.7% (vs California 4.3%)
Hispanic or Latino population	30.8% (vs California 37.7%)
White (non-Hispanic) population	22.3% (vs California 28.1%)

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)

Asian

Sources: Census ACS 2022 B04006+B03001+B02001

Households & Family Composition

328,550 households. Averaging 3.0 people each — larger than the U.S. average of 2.5. 71% are family households — above the U.S. share of ~65%. Of 233,068 families, 33% are married couples with children.

Family households	233,870 households (vs California 24,803)
Households that are families	71.2% (at California median)
Total households	328,550 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. 11.8% moved within the county in the past year — the U.S. baseline is roughly 8–10%. The surrounding county is losing 64,883 residents per year on net (IRS migration data).

Migration · People moving in (annual)	1,730,851
Migration · People moving out (annual)	1,795,734
Migration · Net migration (in − out)	-64,883

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