Kailua Population

1950–2026

40,022

2026 projection

5.6% since 2020 (increase)

010K20K30K40K50K19501960197019801990200020102020

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Kailua. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202640,022+870.22%
202539,935+1730.22%
202339,762-5611.39%
202240,323-790.20%
202140,402+2,5026.60%
202037,900+3140.84%
201937,586+9242.52%
201836,662-1,4263.74%
201738,088-4261.11%
201638,514-2080.54%

Showing 10 of 21 years.

Kailua Demographics

42.9median age

Median age

Female43.6 yrs
Male42 yrs

Adults

31,157
8,855 seniors · 28%22,302 other adults

Sex

Female 51.5% · 20,407Male 48.5% · 19,233

Population by age

MaleFemale85+ years, male: 46685+ years, female: 77080–84 years, male: 49880–84 years, female: 44875–79 years, male: 82175–79 years, female: 1,08370–74 years, male: 1,12070–74 years, female: 1,23565–69 years, male: 1,05365–69 years, female: 1,36160–64 years, male: 1,09460–64 years, female: 1,15755–59 years, male: 1,40555–59 years, female: 1,20050–54 years, male: 97450–54 years, female: 1,18145–49 years, male: 1,13745–49 years, female: 1,34240–44 years, male: 1,55040–44 years, female: 1,85735–39 years, male: 1,49535–39 years, female: 1,29930–34 years, male: 1,20130–34 years, female: 99325–29 years, male: 1,10825–29 years, female: 1,08820–24 years, male: 80020–24 years, female: 82215–19 years, male: 1,23315–19 years, female: 65510–14 years, male: 1,26410–14 years, female: 1,5845–9 years, male: 1,1845–9 years, female: 1,2920–4 years, male: 8300–4 years, female: 1,04085+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45005001K1K1.5K1.5K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 396 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Kailua Income

$148,582median household income

Median household income

$148,582

Half of households earn more, half earn less

Median earnings

$71,969

Typical yearly pay for a worker 25 or older.

Poverty rate

4%

About 1 in 25 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Kailua Marital Status

56% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married56%57%54%
Never married28%32%24%
Divorced9%7%12%
Widowed6%3%9%
Separated<1%<1%1%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

10 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year