Area code
564
564 is a United States area code. Under the North American Numbering Plan it belongs to Washington, which has 6 area codes in total.
Validate a number in 564
Paste a full number and the tool checks it against the numbering plan. It returns the standard formats, the line type the plan assigns and the area code region.
Digits with or without punctuation work. Numbers outside the US are read with the +country code.
Area code 564 at a glance
NANPA lists 92 central office codes (prefixes) in use in area code 564, held by 19 holders across 32 rate centers.
| Fact | Value |
|---|---|
| In service since | 2017-08-28 |
| Time zone | Pacific (P) |
| Assigned overlays | 206 (1947-01-01), 564, 360 |
| Prefixes in use | 92 |
| Pooled prefixes | 92 (100%) |
| Rate centers | 32 |
| Companies holding prefixes | 19 |
| Assignment dates on file | 2017-06-30 to 2025-12-05 (91 prefixes) |
| ZIP codes in its places | 55 |
Rate centers in area code 564
| Rate center | Prefixes | Share |
|---|---|---|
| BREMERTON | 17 | 18% |
| VANCOUVER | 13 | 14% |
| OLYMPIA | 9 | 10% |
| LONGVIEW | 6 | 7% |
| ABERDEEN | 5 | 5% |
| CENTRALIA | 4 | 4% |
| WHATCOMCTY | 4 | 4% |
| MARYSVILLE | 3 | 3% |
| 24 other rate centers | 31 | 34% |
Who holds the prefixes in 564
T-Mobile USA holds the most prefixes, 21 (23%). 100% of the prefixes are pooled, which means their thousands-blocks can belong to different companies.
| Holder | Prefixes | Share |
|---|---|---|
| T-Mobile USA | 21 | 23% |
| Verizon Wireless | 13 | 14% |
| Onvoy | 12 | 13% |
| Teleport Communications America | 8 | 9% |
| Fractel | 7 | 8% |
| Ton80 Communications | 6 | 7% |
| 13 other carriers | 25 | 27% |
A prefix holder is the company a code was assigned to, not necessarily a number's current carrier, because numbers can be ported to another company. Find which carrier a number is on, or browse the prefix holders.
History of area code 564
- 1995-01-15 Area code 360, named as the parent of 564 in the NANPA report, was in service.
- 2017-08-28 Area code 564 went into service.
Area codes nearest to 564
Distance is measured between the centers of the ZIP code places each area code serves, so it is a rough guide.
Overlay codes in the same area
- 206 1947-01-01
- 564, 360
ZIP codes in area code 564
55 ZIP codes fall in places that have a rate center in this area code.
| Place | ZIP codes |
|---|---|
| Vancouver, WA | 14 |
| Olympia, WA | 11 |
| Bremerton, WA | 5 |
A ZIP code and an area code are unrelated systems. A ZIP code can sit in more than one area code, and an area code spans many ZIP codes.
Complaints on file for 564 numbers
232 FCC complaints are on file for 223 numbers in 564, most often filed as "Unwanted Calls". These are unverified consumer reports.
| Year of latest complaint | Numbers |
|---|---|
| 2023 | 40 |
| 2024 | 37 |
| 2025 | 39 |
Other area codes in Washington
Washington is one state with 6 area codes in the NANPA table. 564 is one of them.
Next to 564 in the numbering table
These are the codes just before and after 564 when all are sorted by number. They are neighbours on the list, not necessarily on the map.
What the area code does and does not tell you
A number that starts with 564 was first assigned in Washington. That is a fact about where the number began, and it is a useful hint when you check a form entry, for example a billing address in Washington next to a 564 phone number.
It does not show where the person is today. A number stays with its owner after a move or a change of provider (number portability), and mobile numbers travel with the handset. The area code also cannot tell you whether the line is active, who the carrier is, or whether the number is mobile or fixed: the plan shares those ranges. Read more about the area code, the numbering plan and line type.
Check numbers in bulk with the API
| Product | Credits | Docs |
|---|---|---|
| Phone Numbering-Plan Validation | 1 credit per valid number | API docs |
| Phone Intelligence (carrier and line status) | 1 credit per check (invalid numbers outside the US and Canada are free) | Product page |
Questions about area code 564
Where is area code 564?
NANPA assigns area code 564 to Washington, United States.
In which state does area code 564 sit?
Washington. 564 is one of 6 area codes the NANPA table assigns to the state.
Which places does area code 564 cover?
The places with the most ZIP codes among the rate centers in 564 are Vancouver, WA, Olympia, WA and Bremerton, WA. The rate center list on this page shows all of them.
Who owns area code 564?
NANPA assigns area codes. Within 564, T-Mobile USA holds the most prefixes, 21 prefixes or 23%.
Which time zone does 564 use?
The NANPA NPA report lists the time zone for 564 as Pacific (P).
What year did 564 enter service?
The NANPA NPA report gives an in-service date of 2017-08-28, so 564 has been in use since 2017.
Does area code 564 have an overlay?
Yes. 206 (in service 1947-01-01) and 564, 360 share the same area with 564, so numbers from all of them are local to each other.
Which area codes are nearest to 564?
The area codes closest to 564, measured between the centers of the ZIP code places they serve, are 360 (about 1 mile), 253 (about 33 miles), 425 (about 62 miles), 971 (about 98 miles) and 503 (about 99 miles).
How many prefixes does area code 564 have?
NANPA's report dated 2026-10-17 lists 92 prefixes in service in 564, spread over 32 rate centers and 19 holders.
Are there complaints about 564 numbers?
The FCC data on file has 232 complaints for 223 numbers in 564. They are unverified consumer reports. A number with no complaints on file is not proven safe.
Area code assignments: North American Numbering Plan Administrator NPA report, file dated 10/17/2026, retrieved 2026-10-17. Source file. New codes are assigned several times a year. Prefixes, rate centers, holders, time zone, in-service date and overlays: NANPA central office code report dated 2026-10-17 and NPA report dated 2026-10-18. Complaints: FCC consumer complaints open data, fetched 2026-10-17. ZIP code places: Postal code places and coordinates: GeoNames (geonames.org), licensed CC BY 4.0.