Area code 812

Area code 812 at a glance

812 is one of 8 geographic area codes serving Indiana; NANPA records its in-service date as January 1, 1947. It is an overlay: 812 and 930 cover the same territory, so neighbors on the same street can have different area codes. It is in the Eastern and Central time zone. The places with the most assigned exchanges include Evansville, Terre Haute, New Albany, Columbus, and Seymour. By population, its largest named places are Washington, Evansville, St. Joseph, Terre Haute, and Columbus.

Cities and towns in area code 812

812 holds 20% of the 3,984 central office codes assigned in Indiana, the 2nd most of the state's 8 codes. 127 Census places could be matched to rate centers with 812 exchanges; the most populous are Washington (139,000), Evansville (115,000), St. Joseph (79,115), and Terre Haute (58,531). Each place page lists the exact prefixes and carriers for that town.

Dialing 812 numbers

According to NANPA's dialing-plan data, local calls within 812 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 for all HNPA and FNPA calls permissible at service provider discretion"

Phone companies in area code 812

52 carriers hold the 785 central office codes assigned in 812. Indiana Bell Tel CO INC has the most, with 132 (17%). 571 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.

Where 812 numbers are rated

NANPA assigns each central office code to a rate center, the local calling area that decides whether a call is local or toll. 812 has codes in 172 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.

How full is area code 812?

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). 785 are assigned in 812, 98% of 800. 8 were assigned in 2020 or later.

Using area code 812 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 812 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.