Get a local business phone number in Kirkland, WA

What area code is Kirkland, WA?

Kirkland city is a Census place in King County, Washington, with an estimated 95,499 residents in 2024. All 80 exchanges NANPA lists for its rate center are in area code 425. Kirkland is in the Pacific time zone.

According to NANPA's dialing-plan data, local calls within 425 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.

Phone carriers in Kirkland

14 carriers hold the 80 exchanges assigned to Kirkland's rate center. Ziply Fiber Northwest, LLC d/b/a Ziply Fiber has the most, with 38. 38 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Kirkland can come from any of these blocks; once it is yours, porting lets it move between providers.

Local prefixes for Kirkland

These are the central office codes NANPA records for Kirkland. A caller seeing one of them recognizes a local number. The earliest assignment date recorded in the file for these codes is 2001. 4 of the 80 were assigned in 2020 or later.

When Kirkland's exchanges were assigned

The table groups Kirkland's exchanges by the decade NANPA recorded them as assigned.

Rate centers and local calling in Kirkland

Phone numbers are tied to a rate center, the local calling area used to decide whether a call is local or toll. Kirkland's numbers are rated to the KIRKLAND rate center in NANPA's records. A business number from one of the prefixes above shows up on customers' phones as a Kirkland number.

Keeping an existing Kirkland number costs nothing on Callata, because porting is free; a new number depends on what carriers have open in 425 when you pick it.

Businesses around Kirkland

Kirkland is part of the Seattle-Tacoma-Bellevue, WA metro area, home to 4.1 million people in 2024. County Business Patterns counted 110,685 business establishments in the Seattle, WA metro area in 2023, employing 1,884,361 people. The largest sectors by establishment count are professional, scientific, and technical services (14,812), construction (13,610), and health care and social assistance (13,557).

Setting up a Kirkland business line

Callata Office costs $99 per month for up to 5 people, and each additional user is $20 a month. That covers up to 3 local numbers, calling from a browser or your cell, transcribed voicemail, recorded calls with AI summaries, after-hours routing and E911 on each number.

Porting a number you already use in Kirkland is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.

AI agents are optional: an AI receptionist or scheduler can pick up when the team is busy or closed, take a message, send a text or email, or transfer the call. They draw on prepaid AI minutes ($0.25/minute), disclose that they are AI, and outbound AI calls require prior consent and are limited to 8am–9pm.

The comparison below uses 17 users, the rounded average establishment size in the Seattle, WA metro area. At list prices checked September 28, 2026, that is $424.15 a month on Ooma Office Pro and $510.00 on RingCentral RingEX Core. Callata comes to $339.00 a month for 17 users ($99 a month with 5 users included, then $20 per additional user), below both.