CallataGuidesGet a local business phone number in Southfield, MI
Southfield's area codes, prefixes and carriers from NANPA records, and how to put a Southfield number in front of your customers.
- Area code
- 248 / 947 / 810
- Exchanges
- 130NANPA-assigned
- Carriers
- 25
- Population
- 76,874Census 2024 est.
What area code is Southfield, MI?
With 76,874 residents in the Census 2024 estimate, Southfield sits in Oakland County, Michigan. NANPA lists 130 exchanges for its rate center across 3 area codes; 248 has the most (104, 80%). 248 is part of an overlay with 947, so a new local number in Southfield may carry any of those codes depending on which have numbers available. Southfield is in the Eastern time zone.
According to NANPA's dialing-plan data, local calls within 248 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.
Southfield exchanges by carrier
25 carriers hold the 130 exchanges assigned to Southfield's rate center. Michigan Bell Tel CO has the most, with 45. 85 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Southfield can come from any of these blocks; once it is yours, porting lets it move between providers.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| Michigan Bell Tel CO | 45 | 35% |
| Cellco Partnership d/b/a Verizon Wireless - Mi | 16 | 12% |
| Metropcs, INC. | 13 | 10% |
| New Cingular Wireless PCS, LLC - Il | 8 | 6.2% |
| Mcimetro Access Transmission Services LLC - Mi | 7 | 5.4% |
| Omnipoint Communications Midwest Operations, LLC | 7 | 5.4% |
| Paetec Itel, LLC | 4 | 3.1% |
| Teleport Communications America, LLC - Mi | 4 | 3.1% |
| Level 3 Communications, LLC - Mi | 4 | 3.1% |
| Spok, INC. | 3 | 2.3% |
| 123.net, LLC | 2 | 1.5% |
| Telnet Worldwide, INC. | 2 | 1.5% |
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.
Southfield phone prefixes
A prefix (NXX) is the three digits after the area code. Numbers starting with these prefixes are rated as local to Southfield. The earliest assignment date recorded in the file for these codes is 2001. 17 of the 130 were assigned in 2020 or later.
| Area code | Prefixes (NXX) |
|---|---|
| 248 | 200, 201, 204, 208, 213, 223, 226, 228, 233, 234, 262, 263, 281, 286, 302, 304, 320, 327, 331, 350, 351, 352, 353, 354, 355, 356, 357, 358, 359, 361, 368, 372, 386, 388, 389, 395, 400, 415, 416, 417, 423, 424, 436, 440, 443, 445, 447, 448, 450, 455, 469, 470, 483, 485, 497, 501, 503, 508, 510, 514, 521, 552, 557, 559, 569, 595, 603, 604, 621, 640, 663, 665, 727, 728, 746, 750, 752, 763, 774, 784, 789, 794, 796, 798, 799, 809, 827, 849, 864, 866, 867, 868, 902, 903, 905, 910, 914, 915, 936, 943, 945, 948, 966, 996 |
| 810 | 217, 343, 499, 523, 533, 560, 602 |
| 947 | 215, 217, 224, 234, 235, 238, 241, 253, 259, 281, 282, 426, 517, 881, 895, 900, 948, 985, 997 |
Source: NANPA utilized central office code file.
When Southfield's exchanges were assigned
Assignment dates show when each block of Southfield numbers was added to the local supply.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2000s | 11 | 33% |
| 2010s | 5 | 15% |
| 2020s | 17 | 52% |
Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.
Rate centers and local calling in Southfield
Phone numbers are tied to a rate center, the local calling area used to decide whether a call is local or toll. Southfield's numbers are rated to the SOUTHFIELD rate center in NANPA's records. A business number from one of the prefixes above shows up on customers' phones as a Southfield number.
If your business already has a Southfield number, porting it to Callata is free and keeps it on your cards, listings and vehicles.
Who does business near Southfield
Southfield is part of the Detroit-Warren-Dearborn, MI metro area, home to 4.4 million people in 2024. County Business Patterns counted 102,430 business establishments in the Detroit, MI metro area in 2023, employing 1,846,717 people. The largest sectors by establishment count are retail trade (14,016), health care and social assistance (13,890), and professional, scientific, and technical services (11,783).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Limited-service restaurants | 3,764 | 63,821 | 17.0 |
| Physician practices | 3,622 | 45,657 | 12.6 |
| Full-service restaurants | 3,191 | 65,669 | 20.6 |
| Law offices | 2,130 | 15,565 | 7.3 |
| Dental offices | 1,921 | 16,127 | 8.4 |
| Landscaping services | 1,711 | 8,261 | 4.8 |
| Residential remodelers | 1,621 | 5,924 | 3.7 |
| Insurance agencies and brokerages | 1,520 | 11,569 | 7.6 |
Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.
A Southfield number on Callata
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 Southfield, 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 18 users, the rounded average establishment size in the Detroit, MI metro area. At list prices checked September 28, 2026, that is $449.10 a month on Ooma Office Pro and $540.00 on RingCentral RingEX Core. 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 Southfield, MI?
Southfield has exchanges in 248, 947, and 810; 248 has the most.
How many phone companies have exchanges in Southfield?
25, holding 130 exchanges between them, according to NANPA's 10/01/2026 file.
Can I keep my existing Southfield 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 Southfield?
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).