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US area code · Washington

Area code 509

Where the 509 area code is, its overlay and how to dial a +1 509 number from anywhere.

CoversKennewick, WashingtonTime zonePacific (PT)TypeGeographic
Quick answer

The 509 area code is in Kennewick, Washington, United States (Pacific (PT)). To call from abroad: +1 509 555-0123.

StateWashington
Main areaKennewick
Time zonePacific (PT)
TypeGeographic
10-digit dialingRequired
In service since01-Jan-1957

The 509 area code is a geographic North American Numbering Plan (NANP) code covering Kennewick, Washington. It has been in service since 01-Jan-1957 and sits in the Pacific (PT) time zone.

How to dial a 509 number

From abroad+1 509 555-0123
Within the US / Canada1 509 555-0123
Locally (same area)509 555-0123

Cities in the 509 area code

A 509 number is usually in one of these places in Washington — 7 counties.

Kennewick BentonOpportunityPasco FranklinPullman WhitmanSpokane SpokaneWalla Walla Walla WallaWenatchee ChelanWest Richland BentonYakima Yakima

Other Washington area codes

206253360425564

Frequently asked questions

Where is the 509 area code?

The 509 area code is in Kennewick, Washington, United States (Pacific (PT)).

Do I have to dial 10 digits for 509?

Yes — dial the area code plus the seven-digit number.

How do I call a 509 number from another country?

Dial your exit code (or +), then 1, then 509, then the number: +1 509 555-0123.

Source: NANPA numbering plan. An area code covers a region, not a precise address — a 509 number does not pinpoint a street or ZIP code.

Missed a call from +1 509?

In the 30 days to September 24, 2026, 385 unwanted calls showing a 509 number were reported to the US Federal Trade Commission, 60% of them recorded messages or robocalls. That puts 509 at #254 of 670 area codes reported.

Other145
Calls pretending to be government, businesses, or family and friends63
Reducing your debt (credit cards, mortgage, student loans)48
Dropped call or no message43
Before you call back
  • If you do not know anyone in Washington, do not call back: a genuine caller will leave a message or send a text.
  • Scammers fake the number shown on caller ID, so a 509 number can hide a caller anywhere in the world.
  • Never give a code received by text or a bank detail to an unknown caller. In the US, calls can be reported at reportfraud.ftc.gov.

Who issues +1 509 numbers

Phone companies hold blocks of numbers in each area code. The main holders in 509:

Qwest Corporation 132New Cingular Wireless PCS, LLC 77Ziply Fiber Northwest, LLC Dba Ziply Fiber 69Onvoy, LLC 66T-Mobile USA, Inc. 63Cellco Partnership Dba Verizon Wireless 59

About 25.7% of the 778 prefixes in use belong to mobile carriers: a 509 number is often a cell phone, and it may have moved to another carrier since.

Sources: FTC Do Not Call reported calls (numbers as reported by consumers, not verified), NANPA central office code assignments.

All US area codes United States +1 Map of area code 509 — cities & rate centres