Area code 810

Where area code 810 is

NANPA lists 810 as an in-service geographic area code for Michigan, first put into service on December 1, 1993. It is not part of an overlay, so every number in its territory starts with 810. It is in the Eastern time zone. The places with the most assigned exchanges include Flint, Lapeer, Port Huron, Brighton, and Grand Blanc. By population, its largest named places are Flint, Southfield, Pontiac, Grand Blanc, and Byron.

Places served by 810

810 holds 7.4% of the 6,882 central office codes assigned in Michigan, the 10th most of the state's 13 codes. 41 Census places could be matched to rate centers with 810 exchanges; the most populous are Flint (79,735), Southfield (76,874), Pontiac (62,528), and Grand Blanc (40,056). Each place page lists the exact prefixes and carriers for that town.

Dialing 810 numbers

According to NANPA's dialing-plan data, local calls within 810 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits. Because local calls need the area code, business cards, signage and website copy should always show the full ten-digit number. NANPA's dialing-plan note for this code reads: "1+10 digit permissible at service provider discretion."

Phone companies in area code 810

37 carriers hold the 509 central office codes assigned in 810. Michigan Bell Tel CO has the most, with 87 (17%). 374 of the codes (73%) are pooled, meaning the code holder shares blocks of 1,000 numbers with other carriers instead of using all 10,000 itself. The code holder is not necessarily the carrier serving a given number today, since numbers can be ported between providers.

Rate centers and towns in 810

NANPA assigns each central office code to a rate center, the local calling area that decides whether a call is local or toll. 810 has codes in 50 rate centers. Rate center names in the file are abbreviations; where one matches a Census place, the table links to that city's local-number page.

810 code assignments over time

An area code has 800 possible central office codes that start with 2 through 9, a few of which are reserved (such as N11 service codes and 555). 509 are assigned in 810, 64% of 800. 69 were assigned in 2020 or later.

Using area code 810 for business calls

Callata Office costs $99 per month for up to 5 people, and each additional user is $20 a month. That covers up to 3 local numbers, calling from a browser or your cell, transcribed voicemail, recorded calls with AI summaries, after-hours routing and E911 on each number.

Porting a number you already use in area code 810 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.