Get a local business phone number in Sturgeon Bay, WI
Sturgeon Bay's area code, prefixes and carriers from NANPA records, and how to put a Sturgeon Bay number in front of your customers.
- Area code
- 920
- Exchanges
- 12NANPA-assigned
- Carriers
- 9
- Population
- 9,940Census 2024 est.
Area codes in Sturgeon Bay
Sturgeon Bay, in Door County, Wisconsin, had a Census-estimated population of 9,940 in July 2024. All 12 exchanges NANPA lists for its rate center are in area code 920. 920 is part of an overlay with 274, so a new local number in Sturgeon Bay may carry any of those codes depending on which have numbers available. Sturgeon Bay is in the Central time zone.
According to NANPA's dialing-plan data, local calls within 920 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 |
|---|---|---|---|---|---|
| 920 | 12 | 100% | 1997 | 274 | Central |
Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.
Phone carriers in Sturgeon Bay
9 carriers hold the 12 exchanges assigned to Sturgeon Bay's rate center. T-mobile USA, INC. has the most, with 2. 8 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. Holding a code means NANPA assigned that block of numbers to the carrier for this rate center; individual numbers may since have been ported elsewhere.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| T-mobile USA, INC. | 2 | 17% |
| New Cell d/b/a Cellcom | 2 | 17% |
| Wisconsin Bell INC | 2 | 17% |
| Metropcs, INC. | 1 | 8.3% |
| Level 3 Communications, LLC - Wi | 1 | 8.3% |
| United States Cellular - Wi | 1 | 8.3% |
| Onvoy, LLC - Wi | 1 | 8.3% |
| Net LEC, INC. | 1 | 8.3% |
| Charter Ip Enabled Services, LLC | 1 | 8.3% |
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 Sturgeon Bay
These are the central office codes NANPA records for Sturgeon Bay. A caller seeing one of them recognizes a local number. The earliest assignment date recorded in the file for these codes is 2001. None were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 920 | 256, 333, 473, 493, 495, 559, 603, 695, 724, 743, 746, 818 |
Source: NANPA utilized central office code file.
How local numbers work in Sturgeon Bay
NANPA ties every exchange to a rate center. For Sturgeon Bay that is STURGEONBY, so a number from one of these exchanges reads as local to people in and around Sturgeon Bay.
If your business already has a Sturgeon Bay number, porting it to Callata is free and keeps it on your cards, listings and vehicles.
The local business market
Sturgeon Bay is outside any Census metro or micropolitan area, so the figures below are statewide. County Business Patterns counted 144,774 business establishments in Wisconsin in 2023, employing 2,642,958 people. The largest sectors by establishment count are retail trade (18,044), health care and social assistance (17,592), and accommodation and food services (15,530).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Full-service restaurants | 4,988 | 87,044 | 17.5 |
| Limited-service restaurants | 3,925 | 76,596 | 19.5 |
| Physician practices | 3,107 | 63,015 | 20.3 |
| Drinking places | 2,739 | 18,206 | 6.6 |
| Insurance agencies and brokerages | 2,587 | 12,120 | 4.7 |
| Landscaping services | 2,490 | 13,641 | 5.5 |
| Residential remodelers | 2,142 | 8,173 | 3.8 |
| Offices of real estate agents and brokers | 2,071 | 5,215 | 2.5 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
Business phone service in Sturgeon Bay
For $99 a month, Callata puts a team of up to 5 on one plan ($20 for each person after that): up to 3 local numbers, unlimited inbound calls, a pooled allowance of 1,500 outbound US and Canada minutes per user, browser and cell calling, voicemail transcription with urgency triage, recorded calls with AI summaries and business-hours routing, with E911 on every number.
If you already have a number in Sturgeon Bay, 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.
An 18-person team is the benchmark here, the rounded average establishment size in Wisconsin. Billed per seat at month-to-month list prices (checked September 28, 2026), RingCentral RingEX Core costs $540.00 a month and Ooma Office Pro $449.10. On Callata the same 18 people cost $359.00 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 | $359.00 | $4,308.00 |
| Quo (Starter) | $19.00 per user | $342.00 | $4,104.00 |
| Nextiva (Core) | $23.00 per user | $414.00 | $4,968.00 |
| Ooma (Office Pro) | $24.95 per user | $449.10 | $5,389.20 |
| Dialpad (Standard) | $27.00 per user | $486.00 | $5,832.00 |
| RingCentral (RingEX Core) | $30.00 per user | $540.00 | $6,480.00 |
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 Sturgeon Bay, WI?
920. All exchanges NANPA lists for Sturgeon Bay are in 920.
How many phone companies have exchanges in Sturgeon Bay?
9, holding 12 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Sturgeon Bay 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 Sturgeon Bay?
Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 18 users come to $359.00 a month. For comparison, 18 users on RingCentral RingEX Core list at $540.00 a month (checked September 28, 2026).