CallataGuidesGet a local business phone number in Dayton, WA
Dayton's area code, prefixes and carriers from NANPA records, and how to put a Dayton number in front of your customers.
- Area code
- 509
- Exchanges
- 2NANPA-assigned
- Carriers
- 2
- Population
- 2,471Census 2024 est.
Area codes in Dayton
Dayton, in Columbia County, Washington, had a Census-estimated population of 2,471 in July 2024. All 2 exchanges NANPA lists for its rate center are in area code 509. Dayton is in the Pacific time zone.
According to NANPA's dialing-plan data, local calls within 509 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.
| Area code | Exchanges here | Share | In service since | Overlay with | Time zone |
|---|---|---|---|---|---|
| 509 | 2 | 100% | 1957 | none | Pacific |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Who holds Dayton phone exchanges
2 carriers hold the 2 exchanges assigned to Dayton's rate center. Qwest Corporation has the most, with 1. 2 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.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| Qwest Corporation | 1 | 50% |
| Centurylink Communications, LLC | 1 | 50% |
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.
Local prefixes for Dayton
These are the central office codes NANPA records for Dayton. A caller seeing one of them recognizes a local number. The earliest assignment date recorded in the file for these codes is 2015. None were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 509 | 382, 404 |
Source: NANPA utilized central office code file.
How local numbers work in Dayton
Phone numbers are tied to a rate center, the local calling area used to decide whether a call is local or toll. Dayton's numbers are rated to the DAYTON rate center in NANPA's records. A business number from one of the prefixes above shows up on customers' phones as a Dayton number.
If your business already has a Dayton number, porting it to Callata is free and keeps it on your cards, listings and vehicles.
The local business market
Dayton is outside any Census metro or micropolitan area, so the figures below are statewide. County Business Patterns counted 202,177 business establishments in Washington in 2023, employing 3,056,235 people. The largest sectors by establishment count are construction (27,190), health care and social assistance (23,923), and professional, scientific, and technical services (23,574).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Full-service restaurants | 6,724 | 110,404 | 16.4 |
| Offices of real estate agents and brokers | 5,670 | 14,425 | 2.5 |
| Residential remodelers | 5,175 | 18,037 | 3.5 |
| Limited-service restaurants | 5,168 | 90,955 | 17.6 |
| Dental offices | 3,633 | 32,617 | 9.0 |
| Law offices | 3,489 | 21,105 | 6.0 |
| New single-family housing construction contractors | 3,243 | 12,470 | 3.8 |
| Landscaping services | 3,194 | 19,278 | 6.0 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Setting up a Dayton 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.
If you already have a number in Dayton, 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.
The comparison below uses 15 users, the rounded average establishment size in Washington. At list prices checked September 28, 2026, that is $374.25 a month on Ooma Office Pro and $450.00 on RingCentral RingEX Core. On Callata the same 15 people cost $299.00 a month, less than either per-seat plan.
| Provider (plan) | Pricing basis | Per month | Per year |
|---|---|---|---|
| Callata (Callata Office) | $99 incl. 5 users, $20 per extra user | $299.00 | $3,588.00 |
| Quo (Starter) | $19.00 per user | $285.00 | $3,420.00 |
| Nextiva (Core) | $23.00 per user | $345.00 | $4,140.00 |
| Ooma (Office Pro) | $24.95 per user | $374.25 | $4,491.00 |
| Dialpad (Standard) | $27.00 per user | $405.00 | $4,860.00 |
| RingCentral (RingEX Core) | $30.00 per user | $450.00 | $5,400.00 |
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 Dayton, WA?
509. All exchanges NANPA lists for Dayton are in 509.
How many phone companies have exchanges in Dayton?
2, holding 2 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Dayton 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 Dayton?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 15 users come to $299.00 a month. For comparison, 15 users on RingCentral RingEX Core list at $450.00 a month (checked September 28, 2026).