Area code 906: Michigan
Area code 906 is a US state area code for Michigan, on Eastern Time and Central Time. It has 358 prefixes in service across 93 rate centers, the largest being Marquette, Iron Mountain and Escanaba. NANPA lists no overlay code for it. Local calls there take 10 digits.
Local time in area code 906
America/New_York
America/Chicago
Prefixes in service
358 of 792 possible
93 rate centers
Area code 906 facts
| Location | Michigan, United States |
|---|---|
| Time zones | Eastern Time and Central Time |
| Overlays | None |
| In service since | March 19, 1961 |
| Local calls | 10 digits; toll calls 1 + 10 digits |
| Carrier | Not shown. An area code is where a number was issued; numbers port between carriers. Check line type |
Which cities and towns use area code 906?
NANPA records each prefix against a rate center, the local billing area a number belongs to, usually named after its main town. These are the 906 rate centers with the most prefixes in service. 81 smaller ones aren't listed.
| Rate center | Prefixes |
|---|---|
| Marquette | 38 |
| Iron Mountain | 15 |
| Escanaba | 13 |
| Houghton | 13 |
| Sault Ste Marie | 12 |
| Menominee | 10 |
| Ironwood | 7 |
| Ishpeming | 6 |
| Iron River | 6 |
| Manistique | 6 |
| Saint Ignace | 6 |
| Cedarville | 5 |
Source: NANPA central office code assignments, file dated 10/17/2026. Each prefix holds up to 10,000 numbers.
How do I dial a 906 number?
NANPA's dialling plan for 906: local calls inside the code take 10 digits, toll calls 1 + 10 digits. From another area code, dial 1 first. From abroad, use +1. The examples use 555-0147, from a range reserved for fictional numbers.
| Local call inside 906 | 906-555-0147 |
|---|---|
| From another US or Canadian area code | 1-906-555-0147 |
| From outside North America | +1 906 555 0147 |
| E.164, for CRMs and SMS tools | +19065550147 |
When did area code 906 start?
Area code 906 went into service on March 19, 1961. It has no overlay, so every number in its area still starts with it.
Tools for 906 numbers
- Area code lookup
Look up any code or a whole list of numbers, or find the codes for a state or city.
- Area code time zone
Local time for a list of numbers, with a callable-now flag.
- NPA-NXX lookup
Rate center and state for one prefix, a level below the area code.
- TCPA calling hours checker
Whether it's inside the federal 8 a.m. to 9 p.m. calling window there now.
Next step
A 906 number tells you where it was issued, not what it is now.
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Area code 906 questions
- What state is area code 906?
- Area code 906 is in Michigan, United States. Its largest rate centers by number of prefixes are Marquette, Iron Mountain, Escanaba, Houghton and Sault Ste Marie.
- What time zone is area code 906 in?
- Eastern Time and Central Time. The code crosses a time zone line, so the local time depends on where in the area the number was issued.
- Does area code 906 have an overlay?
- Not as of NANPA's file dated 10/16/2026. Every number in its area uses 906.
- When did area code 906 start?
- Area code 906 went into service on March 19, 1961.
- Is a 906 number a cell phone or a landline?
- The area code can't tell you. In the US and Canada mobiles, landlines and VoIP lines share area codes and prefixes, and numbers move between carriers and line types. Only a live line-type lookup answers it for one number.
- How many phone numbers does area code 906 have?
- 358 of its 792 possible prefixes are in service, and each prefix holds up to 10,000 numbers. That counts prefixes assigned to carriers, not numbers in use.
Other area codes in Michigan
Sources
Location, overlays, in-service date and dialling plan: NANPA NPA database, file dated 10/16/2026. Prefixes and rate centers: NANPA central office code assignments, 10/17/2026. Time zones mapped to the IANA time zone database. By the SimpleVerifier Team; how we build these pages.