Callers within Washington’s 509 area code must now include that area code, the Washington Utilities and Transportation Commission said. The switch took effect Sunday, Oct. 24. The change to 10 ...

Beginning Sunday, Oct. 24, you have to add the 509 area code to all calls. The Washington Utilities and Transportation Commission said calls made without adding the area code may not go through.

— The only area code in Washington that allows seven-digit dialing for phone calls is 509. Beginning April 24, callers will all dial the same way in the state, by using 10-digit dialing.

Starting April 24, the 509 area code can be dialed even when making a local call. By October, local calls in Eastern Washington won’t work unless the area code is dialed.

SPOKANE – The 509 area code – the glue that binds Yakima to Usk, and Stehekin to Anatone – is only for only another five years, the state said Wednesday. Then Eastern Washington will need a ...

Starting on Oct. 24, there will be no more seven-digit dialing, you’ll have to add the 509 area code to all calls.

The change, which starts April 24, is meant to be “practice” for mandatory 10-digit dialing coming later this year. Currently, some callers can only use seven digits within the 509 area code.

SPOKANE, Wash. — The only area code in Washington that allows seven-digit dialing for phone calls is 509. Beginning Sunday, callers will all dial the same way in the state, by using 10-digit ...