Cities in area code 313
Which places use area code 313? 6 rate centers in Michigan, the biggest being Detroit Zone 05, Detroit Zone 01, Detroit Zone 06. Data below is NANPA's official prefix-to-rate-center mapping.
Detroit Zone 05, Detroit Zone 01, Detroit Zone 06, Detroit Zone 04, Detroit Zone 02 and Detroit Zone 03 hold the largest prefix inventories. Each locality below links to its rate-center page with the full prefix list.
6 of the localities fall within FCC top-100 metropolitan statistical areas; the rest are smaller communities.
1 of these localities are also reachable through other area codes — overlay territory where the same place answers to several codes.
All of the code's territory keeps Eastern time.
Remember that people keep numbers when they relocate, so a 313 number is a where-it-was-issued fact, not a where-they-are fact.
| Locality (rate center) | Active prefixes | Metro area | All codes serving it |
|---|---|---|---|
| Detroit Zone 05 | 269 | Detroit-Warren-Dearborn, MI | 248, 313 |
| Detroit Zone 01 | 152 | Detroit-Warren-Dearborn, MI | 313 |
| Detroit Zone 06 | 152 | Detroit-Warren-Dearborn, MI | 313 |
| Detroit Zone 04 | 71 | Detroit-Warren-Dearborn, MI | 313 |
| Detroit Zone 02 | 69 | Detroit-Warren-Dearborn, MI | 313 |
| Detroit Zone 03 | 50 | Detroit-Warren-Dearborn, MI | 313 |
FAQ
What is the biggest city in area code 313?
Detroit Zone 05 holds the most active prefixes (269), making it the code's largest numbering locality.
How many places does 313 cover?
6 rate centers in Michigan hold active 313 prefixes, from Detroit Zone 05 down to communities with a single prefix.
Does a 313 number guarantee the caller lives in one of these places?
No — the tables show where number blocks were issued. Porting and VoIP let people keep or acquire numbers anywhere.