Ann Arbor, MI business phone guide

About the Ann Arbor, MI metro area

The Ann Arbor, MI metro area covers 1 county in Michigan and had 374,000 residents in July 2024, up 0.4% since April 2020. The U.S. population grew 2.6% over the same period. By population it ranks 150th of the 925 metro and micropolitan areas and 150th by business establishments.

Businesses in Ann Arbor, MI

County Business Patterns counted 8,322 establishments in the area in 2023, employing 158,858 people in mid-March with $11.2 billion in annual payroll. That is an average of 19.1 employees per establishment. 50.2% of establishments with employees had fewer than five people. By establishment count, the largest sectors are professional, scientific, and technical services (1,301), retail trade (1,065), and health care and social assistance (1,051).

Business density and team size in Ann Arbor, MI

Ann Arbor, MI has 22.3 business establishments per 1,000 residents, 9.5% below the U.S. figure of 24.6. Establishments average 19.1 employees against 16.7 nationally, and payroll per employee is $70,778 (3.6% above the U.S. $68,342). 50.2% of establishments with employees have fewer than five people (U.S.: 55.5%), while 6.0% have 50 or more. Because a handful of large employers lift the average, the share of very small establishments says more about who buys a small-business phone system.

Small-business industries in Ann Arbor, MI

Of the 141 industries these guides cover, 129 have a published Census count in Ann Arbor, MI. The largest are limited-service restaurants (303), full-service restaurants (293), and dental offices (194). Relative to population, book stores are the most over-represented: 4.3 per 100,000 residents against 1.7 nationally.

Phone numbers in the Ann Arbor, MI area

The area's named cities and towns have 232 NANPA-assigned exchanges across 2 area codes; 734 has the most (99%). Callata includes up to 3 local numbers, so a business serving several parts of the area can hold a number in each.

Local numbers by city

Pages for 8 cities and towns in the area list their area codes, prefixes and carriers.

Phone costs for a typical Ann Arbor, MI business

A 19-person team is the benchmark here, the rounded average establishment size in Ann Arbor, MI. Billed per seat at month-to-month list prices (checked September 28, 2026), RingCentral RingEX Core costs $570.00 a month and Ooma Office Pro $474.05. Callata comes to $379.00 a month for 19 users ($99 a month with 5 users included, then $20 per additional user), below both.

Callata in Ann Arbor, MI

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 Ann Arbor, MI 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.