ZIP code · Mililani · Hawaii · United States
ZIP code 96789 — Mililani
ZIP code 96789 serves Mililani, Hawaii.
- Postal code
- 96789Single source Value from one source, not cross-checked.
- City
- Mililani
- County
- Honolulu FIPS 15003
- State
- Hawaii
- Country
- United States
- Coordinates
- 21.4531, -158.0174 — precision estimated (postal-area centroid)
View on OpenStreetMap - Population
- 54,608 (ZCTA, ACS 5-year)
- Population density
- 2,071 / sq mi
- Land area
- 26.4 sq mi (68.3 km²) (ZCTA, ACS 5-year)
- Median household income
- $125,822
- Per-capita income
- $51,629
- Median age
- 42
- Households
- 19,126
- Housing units
- 19,736
- Median home value
- $871,000
- Median gross rent
- $2,298 / month
- Congressional districts
- HI-1 (also HI-2) (119th Congress)
- USDA hardiness zone
- 12a (50 to 55 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- Pacific/Honolulu (UTC−10, no DST)
- Area code
- 808 (from the nearest rate centre)Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 96789 with another ZIP · ZIPs within 25 miles · distance from 96789
Nearby localities
Map of ZIP code 96789
Climate — monthly normals
Warmest month Sep (avg high 83°F), coldest Feb (avg low 60°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 76 | 76 | 77 | 77 | 79 | 80 | 82 | 83 | 83 | 82 | 79 | 77 |
| Avg low °F | 61 | 60 | 62 | 63 | 65 | 67 | 67 | 68 | 67 | 66 | 65 | 63 |
| Precip in | 5.2 | 4.3 | 6.3 | 5.6 | 4.3 | 4.2 | 5.2 | 4.0 | 4.6 | 5.8 | 7.1 | 7.5 |
NOAA 1991–2020 climate normals from the nearest station: UPPER WAHIAWA 874.3 (3.2 mi) · NOAA NCEI
Places in ZIP 96789
- 9 schools
- 2 hospitals & clinics
- 2 doctors & dentists
- 3 pharmacies
- 3 supermarkets
- 32 restaurants & cafés
- 14 parks
- 6 playgrounds
- 4 gyms & sports centres
- 1 libraries
- 1 post offices
- 4 places of worship
- 8 banks
- 5 gas stations
- 1 EV charging stations
- 2 police & fire stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page