With 18,236 people, Diamond Head-Kapahulu-St. Louis is a neighborhood in Honolulu. The typical home is worth $1,032,553. The median age is 48.1, about 9 years above the US median. This is an unusually credentialed place: 50% of adults have a four-year degree. Density works out to 5,206 people per square mile. Renters pay $2,151 a month at the median. These figures are approximated by combining the 10 census tracts that make up Diamond Head-Kapahulu-St. Louis; the Census Bureau does not tabulate data for neighborhoods directly.
At a glance
Wealthier
above the US median
US median: $82,259
Older
median age 48.1
US median: 38.9
More educated
50% hold a bachelor's degree
US average: 36%
Renter-heavy
57% owner-occupied
US average: 65%
Section 01
Population & growth
Total population
18,236
Population density
5,206 / sq mi
US average: 281
Median age
48.1
US average: 38.9
Land area
3.50 sq mi
Section 02
Income & economy
Median household income
$106,027
US average: $82,259
Per capita income
$61,657
US average: $44,673
Households earning $100K+
60.3%
US average: 53.3%
Poverty rate
7.7%
US average: 12.5%
Income inequality (Gini)
0.454
US average: 0.476
Workforce by industry, 2024
Other services9.3%
US avg: 6.7%
Information8.2%
US avg: 10.8%
Finance & insurance6.3%
US avg: 5.9%
Professional, scientific, technical5.2%
US avg: 5.1%
Public administration4.4%
US avg: 4.8%
Wholesale trade3.8%
US avg: 6.9%
Retail trade2.8%
US avg: 9.9%
Transportation & warehousing2.2%
US avg: 2.2%
Arts, entertainment, food2.2%
US avg: 1.9%
Education & health services1.1%
US avg: 0.9%
Agriculture, forestry, fishing0.1%
US avg: 1.6%
Construction0.1%
US avg: 1.2%
Manufacturing0%
US avg: 0.4%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03
Housing
Median home value
$1,032,553
US average: $376,019
Median gross rent
$2,151
US average: $1,442
Owner-occupied
57.4%
42.6% rent
Vacancy rate
12.3%
US average: 10.0%
Persons per household
2.46 people
US average: 2.54
Owner cost-burdened
24.5%
US average: 22.9%
Renter cost-burdened
47.6%
US average: 47.4%
Afford Score
9.7
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Section 04
Race & ethnicity
2024
White, non-Hispanic22.7%(4,141)
Black0.5%(98)
Hispanic / Latino5.1%(934)
Asian50.5%(9,215)
Other21.1%(3,848)
2024
White, non-Hispanic22.7%(4,141)
Black0.5%(98)
Hispanic / Latino5.1%(934)
Asian50.5%(9,215)
Other21.1%(3,848)
Diversity Score
81
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
How many people live in Diamond Head-Kapahulu-St. Louis, Urban Honolulu, Hawaii?
Diamond Head-Kapahulu-St. Louis, Urban Honolulu, Hawaii has about 18,236 residents according to the 2024 American Community Survey.
What is the median household income in Diamond Head-Kapahulu-St. Louis, Urban Honolulu, Hawaii?
The typical household in Diamond Head-Kapahulu-St. Louis, Urban Honolulu, Hawaii earns about $106,027 a year. Half of households make more than that, and half make less.
Is Diamond Head-Kapahulu-St. Louis, Urban Honolulu, Hawaii expensive?
In Diamond Head-Kapahulu-St. Louis, Urban Honolulu, Hawaii, the median home is worth about $1,032,553, and the typical rent is about $2,151 a month.
How educated are people in Diamond Head-Kapahulu-St. Louis, Urban Honolulu, Hawaii?
About 50.0% of adults age 25 and over in Diamond Head-Kapahulu-St. Louis, Urban Honolulu, Hawaii hold a bachelor's degree or higher.
What is the poverty rate in Diamond Head-Kapahulu-St. Louis, Urban Honolulu, Hawaii?
About 7.7% of people in Diamond Head-Kapahulu-St. Louis, Urban Honolulu, Hawaii live below the federal poverty line.
