Mililani, HI demographics:
population, income, and more

Total population
52,473
-0.6% year-over-year change
Median household income
$127,066/yr
1.0% year-over-year change
Housing units
18,950
-0.7% year-over-year change

Mililani population

How many people live in Mililani

Mililani is home to 52,473 residents, according to the most recent Census data. Gender-wise, 51.2% of Mililani locals are male, and 48.8% are female.

Total population
52,473
-0.6% year-over-year change
Gender ratio
Male
51.2%
26,844
Female
48.8%
25,629
Value Percent YoY change
Male 26,844 51.2% -1.0%
Female 25,629 48.8% -0.2%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Mililani is 42, with the population distributed as follows: about 18% are children under 15, then 11.1% are in the 15 to 24 age group. Adults between 25 and 44 make up 24.3% of the population, while another 27.1% fall into the 45 to 64 bracket. Finally, around 19.5% are 65 or older.

Median age
42.1
Age breakdown
Under 15
18%
15 to 24
11.1%
25 to 44
24.3%
45 to 64
27.1%
Over 65
19.5%
Value Percent YoY change
Under 15 9,439 18% 1.7%
15 to 24 5,816 11.1% 5.0%
25 to 44 12,763 24.3% -4.7%
45 to 64 14,216 27.1% -2.4%
Over 65 10,239 19.5% 2.2%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Mililani, 85.8% of the population are US-born citizens, while 11.7% have gained naturalized citizenship. At the same time, 2.5% of residents are non-citizens. As for race, 12.1% of locals are Caucasian, 2.4% are African American and 46.7% have Asian roots. Another 0.2% are Indigenous American, 4.8% are Pacific Islanders, while 1.5% identify as another race. There’s also a share of 32.4% that includes residents with two or more races.

Citizenship
U.S.-born citizens
85.8%
Non-U.S.-born citizens
11.7%
Non-citizens
2.5%
Value Percent YoY change
U.S.-born citizens 45,044 85.8% -0.4%
Non-U.S.-born citizens 6,128 11.7% -1.4%
Non-citizens 1,301 2.5% -4.4%
Racial breakdown
White
12.1%
Black or African American
2.4%
American Indian and Alaska Native
0.2%
Asian
46.7%
Native Hawaiian and other Pacific Islander
4.8%
Two or more races
32.4%
Other
1.5%
Value Percent
White 6,338 12.1%
Black or African American 1,248 2.4%
American Indian and Alaska Native 106 0.2%
Asian 24,489 46.7%
Native Hawaiian and other Pacific Islander 2,501 4.8%
Two or more races 16,984 32.4%
Other 807 1.5%

Households in Mililani

A peek inside Mililani households

Mililani has 18,445 households, with an average of 3 members in each. Of these, 77.4% are families, while the remaining 22.6% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
18,445
-0.2% year-over-year change
Average people per household
3
Non-family households
4,160
Family households
14,285
Value Percent YoY change
Non-family households 4,160 22.6% 1.3%
Family households 14,285 77.4% -0.7%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Mililani

The housing landscape of Mililani

Mililani's housing consists of 18,950 units, with 58.5% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 8.8% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 0.2% of the housing landscape.

Housing units
18,950
-0.7% year-over-year change
Housing types
Value Percent
1 unit, detached 11,078 58.5%
1 unit, attached 1,659 8.8%
2 units 138 0.7%
3 or 4 units 1,218 6.4%
5 to 9 units 2,549 13.4%
10 to 19 units 896 4.7%
20 to 49 units 452 2.4%
50 or more units 922 4.9%
Mobile home 28 0.2%
Boat, RV, van, etc. 9 0%
Homes built since 2020
58
480.0% year-over-year change

The age of buildings in Mililani

In Mililani, the median construction year is 1985. About 0.2% of homes were built before the 1940s, with another 0.3% going up by 1949. Most development happened in the second half of the 20th century. Then, 15.9% of homes were added from 2000 to 2009, 2.5% between 2010 and 2019, and 0.3% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 45 0.2% 12.5%
Built between 1940 and 1949 52 0.3% 23.8%
Built between 1950 and 1959 467 2.5% 12.8%
Built between 1960 and 1969 1,100 5.8% -6.1%
Built between 1970 and 1979 5,851 30.9% -1.7%
Built between 1980 and 1989 3,762 19.8% 4.7%
Built between 1990 and 1999 4,136 21.8% -5.8%
Built between 2000 and 2009 3,013 15.9% 1.1%
Built between 2010 and 2019 466 2.5% -4.1%
Built in 2020 or later 58 0.3% 480.0%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Mililani occupancy rates

Out of the 18,445 occupied housing units in Mililani, 77.8% are owner-occupied, while 22.2% are lived in by tenants. Meanwhile, 2.7% of all homes on the local market sit vacant.

Occupied housing units
18,445
-0.2% year-over-year change
Occupancy breakdown
Renter occupied
4,101
Owner occupied
14,344
Value Percent YoY
change
Renter occupied 4,101 22.2% 10.8%
Owner occupied 14,344 77.8% -3.0%
Unoccupied housing units
2.7%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Mililani housing costs

Housing costs in Mililani come to a median of $2,438 per month, while tenants specifically pay a median gross rent of $2,314.

Median housing costs per month
$2,438/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Mililani
$2,314/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Mililani

Mililani education at a glance

About 23.8% of the population in Mililani went to high school, while 19.9% pursued college studies. Another 12.9% earned an associate degree and 28.4% hold a bachelor’s. Meanwhile, 13.9% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 385 0.9% -20.9%
High school diploma 9,789 23.8% -2.7%
College diploma 8,182 19.9% -5.8%
Associate degree 5,302 12.9% -0.9%
Bachelor's degree 11,675 28.4% 1.1%
Graduate degree 5,721 13.9% 4.8%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Mililani

How much people earn in Mililani

The average annual household income in Mililani was $149,811 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +3.2% change from the previous year. At the same time, the median income stood at $127,066, reflecting a +1% shift over the same period.

Average household income in Mililani
$149,811/year
3.2% year-over-year change
Median household income in Mililani
$127,066/year
1.0% year-over-year change

Mililani income by age

In Mililani, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $119,926. Those with someone between 45 and 64 in charge, often well established professionally, earn $155,339 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $62,308, while those led by someone over 65, many of whom may be retired, have about $110,487 in earnings. Overall, 96.4% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $62,308 -22.4%
25 - 44 $119,926 1.5%
45 - 64 $155,339 2.4%
Over 65 $110,487 3.7%
Above poverty level
50,065
Below poverty level
1,850
Value Percent YoY
change
Above poverty level 50,065 96.4% -0.6%
Below poverty level 1,850 3.6% 1.1%

Employment in Mililani

Workforce and job types in Mililani

83.1% of the working population are employed in professional or administrative positions, while 16.9% are in hands-on or service-based jobs. Also, 7.3% run their own businesses, 52.2% are employed by private companies, and 30.6% work in the public sector.

Workforce demographics

White collar
21,428
Blue collar
4,367
Value Percent YoY change
White collar 21,428 83.1% -1.6%
Blue collar 4,367 16.9% -8.3%
Employer type
Self employees
7.3%
Private companies
52.2%
Governmental workers
30.6%
Not for profit companies
9.8%
Value Percent YoY change
Self employees 1,894 7.3% 0.6%
Private companies 13,475 52.2% -5.9%
Governmental workers 7,887 30.6% 0.2%
Not for profit companies 2,540 9.8% 3.0%

Transportation in Mililani

How people get around in Mililani

Commuting methods vary: 96.4% of residents travel by personal vehicle and 1% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Means of transportation
Value Percent YoY change
Car 23,430 96.4% -2.6%
Taxicab 9 0% N/A
Bus or trolleybus 387 1.6% -17.8%
Motorcycle 15 0.1% 7.1%
Bicycle 228 0.9% -1.7%
Walk 238 1% 28.6%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Mililani by zipcode?

Zipcode Population Number of households Median income Average income
96789 54,278 19,079 $127,066 $149,857

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FAQs about Mililani demographics 

What is the total population of Mililani?

Mililani has a total population of 52,473 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by -0.6% compared to a year ago.

What is the gender ratio in Mililani?

The gender ratio in Mililani is as follows:
  • 51.2% males (26,844 residents)
  • 48.8% females (25,629 residents)

What is the median age in Mililani?

The median age in Mililani is 42.1.

What is the age distribution of the population in Mililani?

The age distribution in Mililani is as follows:
  • Under 15: 18% (9,439 residents)
  • Ages 15-24: 11.1% (5,816 residents)
  • Ages 25-44: 24.3% (12,763 residents)
  • Ages 45-64: 27.1% (14,216 residents)
  • Over 65: 19.5% (10,239 residents)

What is the racial and ethnic makeup of Mililani?

The racial and ethnic makeup of Mililani is as follows:
  • White: 12.1% (6,338 residents)
  • Black or African American: 2.4% (1,248 residents)
  • American Indian and Alaska Native: 0.2% (106 residents)
  • Asian: 46.7% (24,489 residents)
  • Native Hawaiian and Other Pacific Islander: 4.8% (2,501 residents)
  • Two or More Races: 32.4% (16,984 residents)
  • Other: 1.5% (807 residents)

What percentage of the population in Mililani are U.S.-born citizens?

U.S.-born citizens represent 85.8% of the population in Mililani.

How many housing units are there in Mililani?

There are 18,950 housing units in Mililani, reflecting a -0.7% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Mililani and what is the average household size?

Mililani has a total of 18,445 households, with an average of 3 people in each.

What is the median household income in Mililani?

Mililani has a median household income of $127,066, representing a +1.0% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Mililani?

Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 83.1% (21,428 residents)
  • Blue-collar workers: 16.9% (4,367 residents)

Places of employment:
  • Self-employed: 7.3% (1,894 residents)
  • Private companies: 52.2% (13,475 residents)
  • Governmental workers: 30.6% (7,887 residents)
  • Not-for-profit companies: 9.8% (2,540 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025