Get a local business phone number in Tecumseh, MI

What area code is Tecumseh, MI?

With 8,606 residents in the Census 2024 estimate, Tecumseh sits in Lenawee County, Michigan. All 7 exchanges NANPA lists for its rate center are in area code 517. Tecumseh is in the Eastern time zone.

According to NANPA's dialing-plan data, local calls within 517 are dialed as seven digits and toll calls as 1 plus ten digits.

Phone carriers in Tecumseh

5 carriers hold the 7 exchanges assigned to Tecumseh's rate center. Frontier North, INC. - Mi has the most, with 3. 4 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.

Local prefixes for Tecumseh

Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Tecumseh's rate center (TECUMSEH). The earliest assignment date recorded in the file for these codes is 2022. 1 of the 7 were assigned in 2020 or later.

Rate centers and local calling in Tecumseh

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

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

Businesses around Tecumseh

Tecumseh is part of the Adrian, MI micropolitan area, home to 97,746 people in 2024. County Business Patterns counted 1,808 business establishments in the Adrian, MI micropolitan area in 2023, employing 23,238 people. The largest sectors by establishment count are retail trade (283), health care and social assistance (228), and other services (except public administration) (222).

Setting up a Tecumseh business line

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.

Porting a number you already use in Tecumseh 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.

A 13-person team is the benchmark here, the rounded average establishment size in the Adrian, MI micropolitan area. Billed per seat at month-to-month list prices (checked September 28, 2026), RingCentral RingEX Core costs $390.00 a month and Ooma Office Pro $324.35. Callata comes to $259.00 a month for 13 users ($99 a month with 5 users included, then $20 per additional user), below both.