ZIP Code 96791 — Waialua, HI
96791 is a standard (street delivery) ZIP code serving Waialua, Hawaii, in Honolulu County. To mail something here you only need these five digits — but the four-digit extension narrows delivery to a single point, and it is what USPS bulk postage discounts are priced on.
ZIP code 96791 at a glance
| ZIP code | 96791 |
|---|---|
| Primary city | Waialua |
| State | Hawaii (HI) |
| County | Honolulu FIPS 15003 |
| ZIP type | Standard (street delivery) |
| Time zone | Pacific/Honolulu |
| Population | 6,377 |
| Coordinates | 21.550720, -158.158570 |
How ZIP+4 works in 96791
The four digits after the hyphen encode a delivery segment inside 96791. In practice one segment usually means:
- One side of one block — odd numbers on a street between two cross streets
- A single large building, or one floor of it
- A group of PO boxes, sometimes a single box
- A single business that receives enough mail to warrant its own code
That is why 96791 has no single ZIP+4: two neighbors across the street from each other usually have different ones. Enter a street address above and we will return the exact nine-digit code along with the standardized USPS address format.
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 96791.
| ZIP | City | Distance |
|---|---|---|
| 96792 | Waianae, HI | 6.1 mi |
| 96857 | Schofield Barracks, HI | 8 mi |
| 96786 | Wahiawa, HI | 8.7 mi |
| 96759 | Kunia, HI | 8.9 mi |
| 96712 | Haleiwa, HI | 9.5 mi |
| 96789 | Mililani, HI | 12.9 mi |
| 96797 | Waipahu, HI | 13.5 mi |
| 96707 | Kapolei, HI | 13.8 mi |
| 96762 | Laie, HI | 14.8 mi |
| 96731 | Kahuku, HI | 15.2 mi |
| 96782 | Pearl City, HI | 15.8 mi |
| 96717 | Hauula, HI | 16.9 mi |
Questions about 96791
What is the ZIP+4 code for 96791?
96791 is the five-digit ZIP code. The ZIP+4 adds four more digits that identify a specific delivery point — usually one side of a city block, a single building, or a group of PO boxes. Because those four digits change from address to address within 96791, you need to look up a specific street address to get them.
What city is 96791?
96791 is assigned to Waialua, Hawaii, in Honolulu County.
Do I need to use the ZIP+4?
It is optional for ordinary mail, but it speeds up sorting and it is required for most USPS bulk-mail postage discounts. Many address-verification and e-commerce systems also use ZIP+4 to confirm a delivery point exists.
Need thousands of these?
Upload a CSV and get ZIP+4, county, carrier route, and delivery-point data appended to every row — or call the API directly.