Get a local business phone number in Clinton, MO

What area code is Clinton, MO?

Clinton, in Henry County, Missouri, had a Census-estimated population of 9,449 in July 2024. All 13 exchanges NANPA lists for its rate center are in area code 660. Clinton is in the Central time zone.

According to NANPA's dialing-plan data, local calls within 660 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.

Phone carriers in Clinton

6 carriers hold the 13 exchanges assigned to Clinton's rate center. Aerial Communications, INC. has the most, with 6. 12 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. The table counts codes by the operating company NANPA assigned them to, not by who serves each number today.

Local prefixes for Clinton

Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Clinton's rate center (CLINTON). The earliest assignment date recorded in the file for these codes is 2001. 5 of the 13 were assigned in 2020 or later.

When Clinton's exchanges were assigned

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

Rate centers and local calling in Clinton

NANPA ties every exchange to a rate center. For Clinton that is CLINTON, so a number from one of these exchanges reads as local to people in and around Clinton.

New local numbers are drawn from carrier inventory, so the exact 660 numbers available change over time; porting an existing number is free.

Businesses around Clinton

Clinton is outside any Census metro or micropolitan area, so the figures below are statewide. County Business Patterns counted 151,475 business establishments in Missouri in 2023, employing 2,631,543 people. The largest sectors by establishment count are health care and social assistance (20,637), retail trade (19,971), and other services (except public administration) (15,950).

Setting up a Clinton business line

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 Clinton 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.

Per-seat phone plans multiply by headcount. For the rounded average establishment size in Missouri, 17 users on RingCentral RingEX Core come to $510.00 a month and on Ooma Office Pro $424.15, at month-to-month list prices checked September 28, 2026. Callata comes to $339.00 a month for 17 users ($99 a month with 5 users included, then $20 per additional user), below both.