Demographics & People

About 345,482 people live in Urban Honolulu, in 136,902 households. Population shrank 0.2% from 346,323 (2022) to 345,482 (2024). Median age 43.0 years. (4.2y older than Honolulu County; 2.4y older than Hawaii). Children under 18 are 16% of the population. Population is 52% Asian and 16% White (non-Hispanic). The community is moderately diverse (Simpson index 0.49). 56% of households are family-led. County is losing 19,030 residents per year (2022-2023). County health: 26% adult obesity, 12% smoke.

2.5 people per household (vs Hawaii avg 2.9).
44% non-family households (singles, roommates) (vs Hawaii 28%).
62 dependents per 100 working-age (youth + seniors / 18-64) (vs Hawaii 70).

Population & Trend

Population shrank 0.2% from 346,323 (2022) to 345,482 (2024). Estimated 2026 population: ~344,653 (extrapolated at -0.1%/yr trend). Census Bureau Vintage estimate: 343,560.

Census data vintage	2024
County Population	1,016,508 people
Annual growth rate · Population change	-0.2%
Annual growth rate · Population (2022)	346,323
Annual growth rate · Population (2024)	345,482
Annual growth rate · Trend category	stable
Population	345,482 people (vs Hawaii 22,232)
Population Estimate	343,560

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 43.0y is 4.1 years older than the U.S. median (38.9y). Children under 18 make up 16% — below the U.S. share of ~22%.

Age Summary · Median age	43.0 years (at Hawaii median)
Age Summary · Children Pct	16.5%
Age Summary · Character	established
Age Summary · Total Pop	345,482
Age Summary · Under 18	56,878
Age Summary · 18 To 34	77,782
Age Summary · 35 To 64	134,857
Age Summary · 65 Plus	75,965
Median age	43.0 years (at Hawaii median)

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

Race, Ethnicity & Diversity

Of 345,482 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups). The Simpson diversity index is 0.49 (0 = single group, 1 = perfectly even distribution); this is read as moderately diverse.

Diversity Index · Diversity index (Simpson)	48.9%
Diversity Index · Diversity label	moderately diverse
Diversity Index · Groups counted	4
Diversity Index · Largest group share	67.6%
Asian population	51.8% (vs Hawaii 45.0%)
Black population	1.5% (at Hawaii median)
Hispanic or Latino population	6.9% (vs Hawaii 7.8%)
White (non-Hispanic) population	16.1% (at Hawaii 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)

Asian

Sources: Census ACS 2022 B04006+B03001+B02001

Households & Family Composition

136,902 households. Averaging 2.5 people each — matches the U.S. average of 2.5. 56% are family households — below the U.S. share of ~65%. Of 76,902 families, 23% are married couples with children.

Family households	76,949 households (vs Hawaii 5,933)
Households that are families	56.2% (vs Hawaii 71.8%)
Total households	136,902 households (vs Hawaii 8,130)

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

Residential Stability & Migration

How long residents have lived here and where they came from. 14.6% moved within the county in the past year — the U.S. baseline is roughly 8–10%. The surrounding county is losing 19,030 residents per year on net (IRS migration data).

Migration · People moving in (annual)	879,813
Migration · People moving out (annual)	898,843
Migration · Net migration (in − out)	-19,030

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