Get a local business phone number in Romeo, MI

What area code is Romeo, MI?

With 3,758 residents in the Census 2024 estimate, Romeo sits in Macomb County, Michigan. All 21 exchanges NANPA lists for its rate center are in area code 586. Romeo is in the Eastern time zone.

According to NANPA's dialing-plan data, local calls within 586 are dialed as seven digits and toll calls as 1 plus ten digits.

Phone carriers in Romeo

13 carriers hold the 21 exchanges assigned to Romeo's rate center. Cellco Partnership d/b/a Verizon Wireless - Mi has the most, with 4. 15 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Romeo can come from any of these blocks; once it is yours, porting lets it move between providers.

Local prefixes for Romeo

Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Romeo's rate center (ROMEO). The earliest assignment date recorded in the file for these codes is 2001. 2 of the 21 were assigned in 2020 or later.

When Romeo's exchanges were assigned

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

Rate centers and local calling in Romeo

What a caller sees as "local" is the area code plus prefix. In Romeo, those come from the ROMEO rate center, as recorded by NANPA.

If your business already has a Romeo number, porting it to Callata is free and keeps it on your cards, listings and vehicles.

Businesses around Romeo

Romeo 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).

Setting up a Romeo 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.

Porting a number you already use in Romeo 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 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. Callata comes to $359.00 a month for 18 users ($99 a month with 5 users included, then $20 per additional user), below both.