Kailua CDP (Hawaii County) is a city of 21,818 people in Hawaii. Since 2000 the city has more than doubled, up 11,948 people. Home values have more than tripled since 2000, reaching $667,400. Density works out to 1,581 people per square mile. The average commute runs 20 minutes. The foreign-born share is 20%.
At a glance
Wealthier
median household income $88,211, above the US median
US median: $82,259
Older
median age 41.6
US median: 38.9
Average education
34% hold a bachelor's degree
US average: 36%
Less affordable
home values up 93%, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Kailua CDP (Hawaii County)
What changed most since 1990
Asian share37.3% → 19.0%(−18.3 pts)US over the same years: +3.1 pts
Population9,224 → 21,818(+137%)US over the same years: +35%
Homes owned by their occupants45.9% → 67.0%(+21.1 pts)US over the same years: +0.9 pts
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans
Veterans by period of service, 2024
Gulf War (2001 or later)9.3%(102)
US avg: 26.4%
Gulf War (1990s)11.5%(126)
US avg: 24.3%
Vietnam era52.7%(576)
US avg: 33.1%
Korean War4.6%(50)
US avg: 4.5%
World War II4.7%(51)
US avg: 1%
Share of the 1,093 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Over time
Kailua CDP (Hawaii County), decade by decade
Kailua CDP (Hawaii County) population, inflation-adjusted income and home value, education, and diversity by year
Year
Population
Median household income
Median home value
Bachelor's degree+
Diversity score
1990
9,224
$73,598
$445,453
17.2%
72.8
2000
9,870
$74,458
$346,114
19.8%
87.6
2010
11,975
$85,952
$698,858
23.3%
86.3
2020
19,713
$93,049
$603,232
30.4%
91.4
2024
21,818
$88,211
$667,400
33.6%
86.4
Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.
How many people live in Kailua CDP (Hawaii County), Hawaii?
Kailua CDP (Hawaii County), Hawaii has about 21,818 residents according to the 2024 American Community Survey.
What is the median household income in Kailua CDP (Hawaii County), Hawaii?
The typical household in Kailua CDP (Hawaii County), Hawaii earns about $88,211 a year. Half of households make more than that, and half make less.
Is Kailua CDP (Hawaii County), Hawaii expensive?
In Kailua CDP (Hawaii County), Hawaii, the median home is worth about $667,400, and the typical rent is about $1,754 a month.
How educated are people in Kailua CDP (Hawaii County), Hawaii?
About 33.6% of adults age 25 and over in Kailua CDP (Hawaii County), Hawaii hold a bachelor's degree or higher.
What is the poverty rate in Kailua CDP (Hawaii County), Hawaii?
About 14.3% of people in Kailua CDP (Hawaii County), Hawaii live below the federal poverty line.
Has Kailua CDP (Hawaii County), Hawaii grown since 1990?
Yes, Kailua CDP (Hawaii County), Hawaii has grown since 1990. The population has added about 12,594 residents, a change of about 137 percent over that period.
