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 High-density area
- $127,066
- Median income Above-median income area
- $920,400
- Median home value Above-median home value
- 45.0%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
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.
FHFA HPI release change
What changed in the latest House Price Index year
- FHFA House Price Index values in ZIP 96789 (Mililani, HI) rose +7.8% from 2023 to 2024. The all-transactions index moved from 341.2 in 2023 to 367.7 in 2024 (2000 = 100).
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 average Hawaii ZIP), while per-capita income is $53,168. Both reported hardship measures are comparatively low in absolute terms: poverty is 3.6% and unemployment is 3.1%. Housing is both higher-cost and owner-heavy: median home value is $920,400 (19% above the average Hawaii ZIP), while 77.8% of occupied homes are owner-occupied and median rent is $2,314.
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. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in Honolulu County, so 96789 can be compared with both its immediate and county-level context.
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.
- Other services (except public administration)
Other services (except public administration)
76 establishments
- Construction
Construction
59 establishments
- Accommodation and food services
Accommodation and food services
56 establishments
- Professional, scientific, and technical services
Professional, scientific, and technical services
50 establishments
- Health care and social assistance
Health care and social assistance
44 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, 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
Who lives in ZIP 96789?
42.1
Median Age
51.2%
Male
48.8%
Female
10.3%
Foreign-Born
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 ZIP avg
$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
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?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
19,602housing units
19,602
Total Housing Units
19,079
Occupied Units
523
Vacant Units
2.84
Avg Household Size
Occupancy Type
$920,400
Median Home Value
+19% vs state ZIP avg
$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.
- 96797
Waipahu (96797)
72,289 residents
- 96789
Mililani (96789)
54,129 residents
- 96818
Honolulu (96818)
50,586 residents
- 96786
Wahiawa (96786)
40,859 residents
- 96782
Pearl City (96782)
40,496 residents
- 96701
Aiea (96701)
40,281 residents
- 96762 6,419
Laie (96762)
6,419 residents
- 96717 5,555
Hauula (96717)
5,555 residents
- 96857 2,522
Schofield Barracks (96857)
2,522 residents
What this shows Among its immediate neighbors, ZIP 96789 ranks #2 by population - useful context the national average alone can't give.
ZIP 96789 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 96789
Mililani (96789)
$127,066 median income
- 96762
Laie (96762)
$125,645 median income
- 96797
Waipahu (96797)
$114,654 median income
- 96701
Aiea (96701)
$111,173 median income
- 96782
Pearl City (96782)
$108,669 median income
- 96717
Hauula (96717)
$102,978 median income
- 96818
Honolulu (96818)
$100,567 median income
- 96786
Wahiawa (96786)
$85,554 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.
| 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 |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 96789, both outside HI so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (54,129 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Honolulu County
Related Areas
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.
Related
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What to do with ZIP 96789's numbers, next.
- See how ZIP 96789 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Mililani, HI ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
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ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.