Zip Code 96789 — Mililani, HI

ZIP Code 96789 is associated with Mililani, HI, in Honolulu County. The listed population estimate is 54,278; estimated density is 794.8 people per square mile. Among records with population estimates, it ranks #6 of 34 in Honolulu County and #6 of 92 in HI.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (21.478230, -157.972640)

Data MetricLocal Statistic
Postal / Zip Code96789
Primary CityMililani
State / ProvinceHI
CountyHonolulu
Total Population54,278
Population Density794.8 people/sq mi
TimezonePacific/Honolulu

How 96789 Compares

MetricZIP 96789Honolulu County recordsHI records
Population estimate54,2781,001,146 (sum)1,445,235 (sum)
Population Density794.8 /sq mi----
County population rank#6 of 34----
State population rank#6 of 92----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in HI

ZIP CodeCityDistancePopulation estimate
ZIP 96782Pearl City3.4 mi37,475
ZIP 96857Schofield Barracks5.2 mi4,039
ZIP 96786Wahiawa5.2 mi40,658
ZIP 96797Waipahu5.7 mi72,435
ZIP 96759Kunia5.8 miN/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →