ZIP Code 99508 — Anchorage, AK
99508 is a standard (street delivery) ZIP code serving Anchorage, Alaska, in Anchorage 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 99508 at a glance
| ZIP code | 99508 |
|---|---|
| Primary city | Anchorage |
| State | Alaska (AK) |
| County | Anchorage FIPS 02020 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Anchorage |
| Population | 36,458 |
| Coordinates | 61.201450, -149.814600 |
How ZIP+4 works in 99508
The four digits after the hyphen encode a delivery segment inside 99508. 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 99508 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.
Other ZIP codes in Anchorage
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 99508.
| ZIP | City | Distance |
|---|---|---|
| 99501 | Anchorage, AK | 1.9 mi |
| 99513 | Anchorage, AK | 2.5 mi |
| 99518 | Anchorage, AK | 3.7 mi |
| 99517 | Anchorage, AK | 4.1 mi |
| 99506 | Jber, AK | 4.4 mi |
| 99530 | Anchorage, AK | 5.7 mi |
| 99504 | Anchorage, AK | 5.8 mi |
| 99515 | Anchorage, AK | 6.3 mi |
| 99507 | Anchorage, AK | 6.3 mi |
| 99502 | Anchorage, AK | 6.3 mi |
| 99505 | Jber, AK | 7.4 mi |
| 99516 | Anchorage, AK | 9.5 mi |
Questions about 99508
What is the ZIP+4 code for 99508?
99508 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 99508, you need to look up a specific street address to get them.
What city is 99508?
99508 is assigned to Anchorage, Alaska, in Anchorage 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.