PlainZIP

Mililani, HI · standard

ZIP Code 96789

Honolulu County, Hawaii - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

54,129
766/sq mi
$127,066
Median income
$920,400
Median home value
45.0%
Bachelor's or higher

The verdict

Mililani pairs a top-decile household income with top-decile home values, in a low-density, homeowner-dominated and unusually populous area.

Top 8%
household income, US ZIPs
Top 3%
home value, US ZIPs
766
people per sq mi
78%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 96789 against every reporting US ZIP.

ZIP code 96789 is a densely settled ZIP (a standard USPS delivery area) in Mililani, Honolulu County, Hawaii, with 54,129 residents across 70.7 square miles, a density of 766 people per square mile, in the Pacific/Honolulu time zone.

ZIP 96789 skews affluent, with a median household income of $127,066 (37% above the Hawaii average), while per-capita income is $53,168. 3.6% of residents live below the poverty line, and the unemployment rate reads 3.1%. On housing, the median home value is $920,400 (19% above the state average) with median rent at $2,314 per month, and 77.8% of occupied units are owner-occupied.

A solid share of residents have a four-year degree: 45.0% of adults hold a bachelor's degree or higher, the median age is 42.1, and the average commute is 30 minutes. A geography-based comparison follows: 10 ZIP codes within about 10 miles of 96789, plus 6 more within Honolulu County, give a clearer read than the national average alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Top industries in ZIP 96789

Top 5 sectors by establishment count in Mililani, HI

Which industries have the most business establishments in ZIP 96789.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 96789, Mililani, HI · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

54,129

Population

70.7

Area (sq mi)

766

People / sq mi

Pacific/Honolulu

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 96789?

42.1

Median Age

51.2%

Male

48.8%

Female

10.3%

Foreign-Born

White 12.1%
African American 2.4%
Asian 46.7%
American Indian or Alaska Native 0.2%
Native Hawaiian or Pacific Islander 4.8%
Two or More Ethnicities 32.4%
Hispanic or Latino 11.0%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$127,066

Median Household Income

+37% vs state

$53,168

Per Capita Income

3.6%

Poverty Rate

3.1%

Unemployment Rate

29.6 min

Mean Commute Time

How ZIP 96789 ranks nationally

Mililani, HI household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$127,066 Top 8% higher than 92% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Below this entry. $120,000–$140,000: 1,362 US ZIPs (4%). This entry sits in this band. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 64.4%
Bachelor's Degree or Higher 45.0%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

19,602

Total Housing Units

19,079

Occupied Units

523

Vacant Units

2.84

Avg Household Size

Occupancy Type

Owner 77.8%
Renter 22.2%

$920,400

Median Home Value

+19% vs state

$2,314

Median Rent

1985

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

+7.8%

YoY Change (2024)

368

HPI Index (2000 = 100)

+268%

Total Change Since 2000

Home values in ZIP 96789 have increased 7.8% over the past year (2024). Since 2000, this ZIP has seen +268% cumulative appreciation.

Year Annual Change HPI Index
2020 +3.8% 280
2021 +3.0% 288
2022 +26.5% 364
2023 -6.3% 341
2024 +7.8% 368

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 477 business establishments in ZIP 96789, employing approximately 5,812 people with a combined annual payroll of $283,069,000.

477

Businesses

5,812

Employees

$283.1M

Annual Payroll

15

Industry Sectors

Industry Establishments % of Total
Other services (except public administration) 76 15.9%
Construction 59 12.4%
Accommodation and food services 56 11.7%
Professional, scientific, and technical services 50 10.5%
Health care and social assistance 44 9.2%
Retail trade 41 8.6%
Administrative and support and waste management and remediation services 34 7.1%
Finance and insurance 27 5.7%
Real estate and rental and leasing 25 5.2%
Information 20 4.2%
Wholesale trade 13 2.7%
Educational services 11 2.3%
Arts, entertainment, and recreation 8 1.7%
Manufacturing 5 1.1%
Transportation and warehousing 5 1.1%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 96789 vs 96797 →

ZIP 96789 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 96789 ranks #2 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 96789 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 96789 ranks the highest of 8 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
96797 Waipahu, HI 72,289 3.7 mi
96857 Schofield Barracks, HI 2,522 5.0 mi
96782 Pearl City, HI 40,496 5.0 mi
96759 Kunia, HI 457 6.3 mi
96786 Wahiawa, HI 40,859 6.0 mi
96717 Hauula, HI 5,555 7.4 mi
96701 Aiea, HI 40,281 7.5 mi
96860 Jbphh, HI 1,124 8.9 mi
96818 Honolulu, HI 50,586 9.3 mi
96762 Laie, HI 6,419 10.3 mi

More ZIP Codes in Honolulu County

96797 standard
Waipahu, HI
Pop: 72,289
96706 standard
Ewa Beach, HI
Pop: 62,730
96817 standard
Honolulu, HI
Pop: 54,628
96744 standard
Kaneohe, HI
Pop: 54,247
96734 standard
Kailua, HI
Pop: 50,746
96818 standard
Honolulu, HI
Pop: 50,586

Related Areas

Honolulu County Mililani, HI Hawaii

Frequently Asked Questions

What county is ZIP code 96789 in? ▼
ZIP code 96789 (Mililani) is located in Honolulu County, Hawaii. Honolulu County contains multiple ZIP codes, see the full list at /counties/honolulu-hi.
What is the population of ZIP code 96789? ▼
ZIP code 96789 in Mililani, HI has a population of 54,129 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 96789? ▼
The median household income in ZIP 96789 is $127,066, which is 67% above the national average of $76,288.
What is the average home value in ZIP 96789? ▼
The median home value in ZIP 96789 is $920,400, which is 231% above the national average of $278,155.
What is the demographic makeup of ZIP 96789? ▼
The largest racial group in ZIP 96789 is Asian at 46.7%. Hispanic or Latino residents make up 11.0% of the population.
How many businesses are in ZIP code 96789? ▼
ZIP code 96789 has 477 business establishments employing approximately 5,812 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 96789? ▼
The top industries by establishment count in ZIP 96789 are: Other services (except public administration) (76), Construction (59), Accommodation and food services (56). There are 15 industry sectors represented in total.
How have home values changed in ZIP code 96789? ▼
According to the FHFA House Price Index, home values in ZIP 96789 increased by 7.8% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 268%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 96789? ▼
In ZIP code 96789, 64.4% of residents aged 25+ have a high school diploma or higher, and 45.0% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 96789? ▼
The mean commute time for workers in ZIP code 96789 is 29.6 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 96789? ▼
In ZIP code 96789, approximately 77.8% of occupied housing units are owner-occupied and 22.2% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 96789? ▼
The poverty rate in ZIP code 96789 is 3.6% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.