Kailua, HI Demographics

Population 42,152 · Census ACS 2020–24

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Median age by neighborhoodHistory and comparison ↓︎
Kailua, HI map of median age by neighborhood
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Population and households in Kailua

Household size in Kailua

Household size, people per household
PeriodKailuaHonolulu areaHawaiiU.S.
2006–103.053.213.122.68
2010–143.063.293.202.73
2015–193.023.263.182.71
2020–242.983.103.062.65
Change−0.07−0.11−0.06−0.03
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Kailua is a place of big households: 2.98 people per home on average, compared with 2.65 nationally. Numbers like that usually point to plenty of families with kids. Locally, though, the typical household here is smaller than in the Honolulu area overall, where it has 3.10 people. Since 2006–10, household size has edged down from 3.05, mirroring the country.

Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).

Median age in Kailua

Median age, years
PeriodKailuaHonolulu areaHawaiiU.S.
2006–1041.538.539.137.7
2010–1443.139.239.838.6
2015–1942.640.241.039.6
2020–2443.441.542.340.1
Change+1.9+3.0+3.2+2.3
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The median resident of Kailua is 43.4 years old, older than the national median of 40.1. Since 2006–10, the median age has climbed from 41.5, in line with the national trend. The youngest areas are in the center, the oldest in the southwest.

Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).

Single-parent households in Kailua

Single-parent households, % of households
PeriodKailuaHonolulu areaHawaiiU.S.
2006–108.9%11.4%11.8%12.3%
2010–148.6%10.8%11.3%12.3%
2015–196.3%10.0%10.5%11.6%
2020–246.7%10.9%11.6%11.6%
Change−2.2 pts−0.5 pts−0.2 pts−0.6 pts
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Single parents head only 6.7% of households in Kailua, well below the national share of 11.6%. Since 2006–10, the single-parent share has fallen 2.2 points, a much bigger shift than nationally. Kailua has a lower share of single-parent households than the great majority of Hawaii cities.

Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).

Housing in Kailua

Renters in Kailua

Renters, % of occupied homes
PeriodKailuaHonolulu areaHawaiiU.S.
2006–1025.8%42.4%40.7%33.3%
2010–1426.8%45.1%42.9%35.6%
2015–1927.1%43.8%41.1%36.0%
2020–2426.7%40.2%37.0%34.8%
Change+0.9 pts−2.2 pts−3.7 pts+1.5 pts
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Most households in Kailua own their homes; 26.7% rent, below the national share of 34.8%. Among homeowners, 32.4% have no mortgage at all, below the national share of 39.8%. Renting is most common in the center and least common in the south. Since 2006–10, the renter share has edged up 0.9 points, mirroring the country.

Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).

Vacant homes in Kailua

Vacant homes, % of all homes
PeriodKailuaHonolulu areaHawaiiU.S.
2006–106.5%9.1%11.2%11.4%
2010–144.9%8.2%11.2%11.4%
2015–196.7%9.1%11.9%11.1%
2020–247.3%8.9%10.8%9.6%
Change+0.8 pts−0.2 pts−0.3 pts−1.8 pts
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Fewer homes sit empty in Kailua than nationally: 7.3%, against 9.6% for the U.S. Vacancy is up 0.8 points from 2006–10, even as the national rate fell.

Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).

Age of homes in Kailua

Age of homes, median year built
PeriodKailuaHonolulu areaHawaiiU.S.
2006–101967197519771974
2010–141966197619781975
2015–191966197719791977
2020–241966197919811980
Change−1+4+4+6
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Kailua is a place of older homes: half were built before 1966, while the national median is 1980. That means established neighborhoods, and more houses that may need updating. The newest homes are mostly in the center, the oldest in the north. Only one other Hawaii city with 5,000+ people has older homes.

Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).

Rent in Kailua

Rent, per month
PeriodKailuaHonolulu areaHawaiiU.S.
2006–10$1,742$1,466$1,393$965
2010–14$1,901$1,594$1,482$1,040
2015–19$2,820$2,010$1,829$1,213
2020–24$3,175$2,359$2,199$1,571
Change+$1,433+$894+$806+$606
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The median renter in Kailua pays $3,175 a month for rent and utilities, well above the national median of $1,571. Rent has climbed $1,433 a month since 2006–10, up 82%, faster than rents rose nationally. The typical renter here spends 32.9% of household income on rent, just over the 30% mark often used to define affordable rent. Renters on a budget will find the lowest rents in the center; the highest are in the south.

Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).

Education in Kailua

Bachelor's degrees in Kailua

Bachelor's degrees, % of adults 25+
PeriodKailuaHonolulu areaHawaiiU.S.
2006–1046.1%30.4%28.9%28.4%
2010–1446.9%31.6%29.8%29.6%
2015–1949.7%34.3%32.5%32.1%
2020–2455.7%37.3%35.3%35.6%
Change+9.6 pts+6.9 pts+6.4 pts+7.2 pts
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Kailua is highly educated: more than half of adults 25 and older (55.7%) hold at least a bachelor's degree, far above the national share of 35.6%. The share with a degree has risen 9.6 points since 2006–10, in line with the national trend. Only one other Hawaii city with 5,000+ people has a higher share of college graduates.

Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).

High school graduates in Kailua

High school graduates, % of adults 25+
PeriodKailuaHonolulu areaHawaiiU.S.
2006–1095.1%89.9%89.8%84.9%
2010–1495.3%90.5%90.6%86.1%
2015–1995.9%91.8%91.9%87.7%
2020–2497.7%93.0%93.1%89.3%
Change+2.6 pts+3.1 pts+3.3 pts+4.3 pts
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Finishing high school is nearly universal in Kailua: 97.7% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%. The share with a diploma is up 2.6 points from 2006–10, in line with the national trend. Kailua has a higher share of high school graduates than the great majority of Hawaii cities.

High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).

Jobs in Kailua

Unemployment, % of the labor force
PeriodKailuaHonolulu areaHawaiiU.S.
2006–104.8%5.5%6.0%8.1%
2010–145.8%6.3%6.9%9.4%
2015–193.9%4.2%4.5%5.6%
2020–243.8%4.7%5.0%5.4%
Change−1.0 pts−0.7 pts−1.0 pts−2.7 pts
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Unemployment in Kailua runs below the national rate: 3.8% of the labor force was out of work and looking, against 5.4% nationally. Unemployment has edged down 1.0 points since 2006–10, mirroring the country. Each figure pools five years of surveys (2020–24), so it describes that whole stretch rather than today's job market.

Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).

Kailua compared with nearby cities

CityHousehold sizeMedian ageSingle parentsRentersVacant homesMedian year builtMedian rentBachelor's degreeHigh school diplomaUnemployment
Kailua2.9843.46.7%26.7%7.3%1966$3,17555.7%97.7%3.8%
Kaneohe Bay2.5322.12.4%95.5%19.2%2003$3,18524.0%99.5%3.8%
Kaneohe Station3.0724.06.1%99.1%10.0%2006$3,41539.6%99.5%8.8%
Waimanalo3.7341.417.5%22.3%3.5%1976$1,85222.7%92.1%4.6%
Kaneohe3.1745.09.8%22.6%6.6%1972$2,54238.5%95.1%4.2%
Waimanalo Beach3.2846.29.3%13.2%2.4%1981$3,04842.4%94.6%5.3%
East Honolulu2.9149.37.3%15.7%9.4%1976$3,16160.4%97.6%4.5%
Honolulu area3.1041.510.9%40.2%8.9%1979$2,35937.3%93.0%4.7%
Waikane3.0446.613.2%35.0%5.6%1984$2,19541.9%98.2%3.7%
Halawa2.6046.89.2%32.1%3.5%1982$1,87437.0%91.2%0.0%
Aiea2.8746.78.2%32.6%7.4%1973$2,40138.7%93.8%4.3%

All figures 2020–24.

Cities with similar populations: Spanish Fork, UT · Fair Oaks, CA · Germantown, TN · Golden, CO · Gonzales, LA · Hobbs, NM · Irwin, PA · Lancaster, TX · Meadow Woods, FL · South El Monte, CA

About these numbers

Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up Kailua. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.

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