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 classified by USPS as a standard delivery area and covers roughly 70.7 square miles in Mililani, Honolulu County, Hawaii. The area is home to 54,129 residents, producing a population density of 766 people per square mile, and falls within the Pacific/Honolulu time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 96789 against Hawaii and the nation.
On the economic side, the median household income for ZIP 96789 sits at $127,066 (37% above the Hawaii average), while per-capita income is $53,168. The poverty rate stands at 3.6% and the unemployment rate at 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 direct signal of whether 96789 behaves more like a homeowner neighborhood or a renter-heavy ZIP.
Education and household profile round out the picture: 45.0% of adults hold a bachelor's degree or higher, the median age is 42.1, and the average commute is 30 minutes. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Honolulu County, so you can benchmark 96789 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →
Top industries in ZIP 96789
Top 5 sectors by establishment count
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 + HUD FMR + FHFA HPI ACS demographics, ZBP business establishments, HUD Fair Market Rents, 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; HUD FMR + 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
$53,168
Per Capita Income
3.6%
Poverty Rate
3.1%
Unemployment Rate
29.6 min
Mean Commute Time
How ZIP 96789 ranks nationally
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?
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
$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 |
More ZIP Codes in Honolulu County
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Frequently Asked Questions
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ZIP Code Research Guides
Official Data Resources for Mililani, HI
Verify and explore additional data for this area using these official government sources.
Read our methodology to see how this data is sourced, computed, and verified.