CallataGuides

Get a local business phone number in Washington, IL

Washington's area code, prefixes and carriers from NANPA records, and how to put a Washington number in front of your customers.

Area code
309
Exchanges
6NANPA-assigned
Carriers
4
Population
24,175Census 2024 est.

Washington area codes

Washington township is a Census town in Tazewell County, Illinois, with an estimated 24,175 residents in 2024. All 6 exchanges NANPA lists for its rate center are in area code 309. 309 is part of an overlay with 861, so a new local number in Washington may carry any of those codes depending on which have numbers available. Washington is in the Central time zone.

According to NANPA's dialing-plan data, local calls within 309 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.

Area codes with exchanges in Washington, IL
Area codeExchanges hereShareIn service sinceOverlay withTime zone
3096100%1957861Central

Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.

Phone carriers in Washington

4 carriers hold the 6 exchanges assigned to Washington's rate center. Onvoy, LLC has the most, with 2. 6 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. The table counts codes by the operating company NANPA assigned them to, not by who serves each number today.

Carriers holding exchanges in Washington, IL
Carrier (NANPA operating company)ExchangesShare
Onvoy, LLC233%
Frontier North, INC. - Il233%
Level 3 Communications, LLC - Il117%
T-mobile USA, INC.117%

Carrier names are the operating company (OCN) names on NANPA's utilized central office code file dated 10/01/2026. A carrier holding a code may port numbers to other carriers.

Exchanges (NPA-NXX) assigned in Washington

These are the central office codes NANPA records for Washington. A caller seeing one of them recognizes a local number. The earliest assignment date recorded in the file for these codes is 2002. 2 of the 6 were assigned in 2020 or later.

Prefixes assigned in Washington, IL
Area codePrefixes (NXX)
309309, 444, 481, 501, 886, 951

Source: NANPA utilized central office code file.

When Washington's exchanges were assigned

Assignment dates show when each block of Washington numbers was added to the local supply.

Washington, IL: exchanges by decade assigned
Decade assignedExchangesShare
2000s250%
2020s250%

Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.

How local numbers work in Washington

NANPA ties every exchange to a rate center. For Washington that is WASHINGTON, so a number from one of these exchanges reads as local to people in and around Washington.

Keeping an existing Washington number costs nothing on Callata, because porting is free; a new number depends on what carriers have open in 309 when you pick it.

The local business market

Washington is part of the Peoria, IL metro area, home to 365,000 people in 2024. County Business Patterns counted 8,084 business establishments in the Peoria, IL metro area in 2023, employing 159,361 people. The largest sectors by establishment count are retail trade (1,143), other services (except public administration) (964), and health care and social assistance (906).

Selected industries in the Peoria, IL metro area, 2023
IndustryEstablishmentsEmployeesEmployees per establishment
Limited-service restaurants2725,30719.5
Full-service restaurants2644,86318.4
Insurance agencies and brokerages1741,1106.4
Physician practices1718,13447.6
Landscaping services1621,0926.7
Law offices1467875.4
Drinking places1319677.4
Plumbing, heating and air-conditioning contractors1301,71513.2

Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.

Setting up a Washington business line

Callata is a business phone system priced at $99 a month with 5 users included, then $20 per additional user. Callata Office includes up to 3 local business numbers, unlimited inbound calling, 1,500 pooled outbound US and Canada minutes per user each month, a browser softphone that can also ring your cell, voicemail with transcription, call recording with AI summaries, business-hours routing and E911 on every number.

If you already have a number in Washington, porting it to Callata is free. Texting from a local number requires a one-time carrier registration (10DLC, $49), and the numbers available in any area code depend on carrier inventory when you choose them.

Optional AI agents (receptionist, sales, support or scheduler) can answer calls after hours or when nobody picks up, take messages, text, email and transfer to your team. They are billed from prepaid AI minutes at $0.25 per minute, identify themselves as AI, and may only place outbound calls to people who consented, between 8am and 9pm.

Per-seat phone plans multiply by headcount. For the rounded average establishment size in the Peoria, IL metro area, 20 users on RingCentral RingEX Core come to $600.00 a month and on Ooma Office Pro $499.00, at month-to-month list prices checked September 28, 2026. On Callata the same 20 people cost $399.00 a month, less than either per-seat plan.

Monthly list price for a 20-person team
Provider (plan)Pricing basisPer monthPer year
Callata (Callata Office)$99 incl. 5 users, $20 per extra user$399.00$4,788.00
Quo (Starter)$19.00 per user$380.00$4,560.00
Nextiva (Core)$23.00 per user$460.00$5,520.00
Ooma (Office Pro)$24.95 per user$499.00$5,988.00
Dialpad (Standard)$27.00 per user$540.00$6,480.00
RingCentral (RingEX Core)$30.00 per user$600.00$7,200.00

Competitor prices are each vendor's published month-to-month list price per user for its lowest plan that includes business calling and texting, checked September 28, 2026: Quo Starter $19, Nextiva Core $23, Ooma Office Pro $24.95 (Essentials excludes texting; one-time $29.95 activation not included), Dialpad Standard $27, RingCentral RingEX Core $30 ($20 billed annually). Prices exclude taxes and fees and may change; annual contracts lower some competitors' prices.

Frequently asked questions

What area code is Washington, IL?

309. All exchanges NANPA lists for Washington are in 309.

How many phone companies have exchanges in Washington?

4, holding 6 exchanges between them, according to NANPA's 10/01/2026 file.

Can I keep my existing Washington business number?

Yes. Porting an existing number to Callata is free. Texting from it starts after carrier registration (10DLC), a one-time $49 fee.

How much is a business phone line in Washington?

Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 20 users come to $399.00 a month. For comparison, 20 users on RingCentral RingEX Core list at $600.00 a month (checked September 28, 2026).