Get a local business phone number in Johnston, SC

Area codes in Johnston

Johnston, in Edgefield County, South Carolina, had a Census-estimated population of 2,214 in July 2024. NANPA lists 8 exchanges for its rate center across 2 area codes; 803 has the most (6, 75%). 803 is part of an overlay with 839, so a new local number in Johnston may carry any of those codes depending on which have numbers available. Johnston is in the Eastern time zone.

According to NANPA's dialing-plan data, local calls within 803 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.

Johnston exchanges by carrier

4 carriers hold the 8 exchanges assigned to Johnston's rate center. Cellco Partnership d/b/a Verizon Wireless - SC has the most, with 4. 8 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. Holding a code means NANPA assigned that block of numbers to the carrier for this rate center; individual numbers may since have been ported elsewhere.

Exchanges (NPA-NXX) assigned in Johnston

These are the central office codes NANPA records for Johnston. A caller seeing one of them recognizes a local number. The earliest assignment date recorded in the file for these codes is 2002. 2 of the 8 were assigned in 2020 or later.

When Johnston's exchanges were assigned

The table groups Johnston's exchanges by the decade NANPA recorded them as assigned.

What makes a number local to Johnston

Phone numbers are tied to a rate center, the local calling area used to decide whether a call is local or toll. Johnston's numbers are rated to the JOHNSTON rate center in NANPA's records. A business number from one of the prefixes above shows up on customers' phones as a Johnston number.

Keeping an existing Johnston number costs nothing on Callata, because porting is free; a new number depends on what carriers have open in 803 when you pick it.

The local business market

Johnston is part of the Augusta-Richmond County, GA-SC metro area, home to 637,000 people in 2024. County Business Patterns counted 11,640 business establishments in the Augusta, GA-SC metro area in 2023, employing 199,286 people. The largest sectors by establishment count are retail trade (1,930), health care and social assistance (1,499), and other services (except public administration) (1,283).

A Johnston number on Callata

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 Johnston 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.

The comparison below uses 17 users, the rounded average establishment size in the Augusta, GA-SC metro area. At list prices checked September 28, 2026, that is $424.15 a month on Ooma Office Pro and $510.00 on RingCentral RingEX Core. Callata comes to $339.00 a month for 17 users ($99 a month with 5 users included, then $20 per additional user), below both.