810 area code
Flint area, Eastern Time.Area code 810 covers Flint, Lapeer, Port Huron and 44 more places in Michigan, on Eastern Time.
Right now in Flint
Eastern Time (EST, UTC-5; EDT, UTC-4 in summer)
Calling hours: Every day, 9 AM to 9 PM (Michigan law)
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Where 810 numbers come from
Numbers are issued by rate center, a billing area named for its main town. 810 has 47. Each one's share is how many 810 numbers start there. Its biggest metro area is Detroit-Warren-Dearborn, MI.
- Flint28%
- Lapeer9%
- Port Huron9%
- Brighton8%
- Grand Blanc3%
- Fenton3%
- Algonac2%
- Davison2%
- Sandusky2%
Also: Clio Mount Morris, Marine City, Imlay City, St. Clair, Hartland, Capac, Dryden, Flushing, Lexington, Montrose, Applegate, Carsonville + 26 more
Share of exchanges (blocks of 10,000 numbers). Source: NANPA rate center and exchange reports, November 10, 2026
When can you call an 810 number?
Sales calls to homes and cell phones have legal hours, set by Michigan law. Hold every 810 number to them, since you can't tell a work line from a personal cell.
What applies to 810Every day, 9 AM to 9 PM
- Federal (TCPA and FTC rule)Every day, 8 AM to 9 PMCalls to residential and mobile numbers. Most calls to businesses are exempt from the FTC's rule.47 CFR 64.1200(c)(1); 16 CFR 310.4(c) (opens in a new tab)
- Michigan lawEvery day, 9 AM to 9 PMIn a harassment statute that needs intent to annoy.MCL 750.540e(1)(f) (opens in a new tab)
Local time comes from the area code, not from where the person is today. Mobiles keep their number when they move. Calling hours here are a guide, not legal advice. Every state's calling hours, with sources
The 810 area code
810 went into service on December 1, 1993, split off from 313, and 248 and 586 were later split off from it. Local calls take all 10 digits.
- 1993810 starts
- 1997248 split off
- 2001586 split off
Source: NANPA area code database
Calling a list of 810 numbers?
Paste it into the free phone number validator. It checks every number, finds each one's time zone and sorts the list by who you can call right now.
810 area code FAQ
What area code is 810?
810 is a Michigan area code for Flint, Lapeer, Port Huron, Brighton and 43 more places.
What time zone is the 810 area code in?
Eastern Time (EST, UTC-5; EDT, UTC-4 in summer).
What are the calling hours for 810 numbers?
Every day, 9 AM to 9 PM, local time, under Michigan law.
When did the 810 area code start?
On December 1, 1993. It was split from 313.
Calling 810 numbers? Reach more of them.
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