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Get a local business phone number in Cairo, IL

Cairo's area codes, prefixes and carriers from NANPA records, and how to put a Cairo number in front of your customers.

Area code
618 / 730
Exchanges
8NANPA-assigned
Carriers
8
Population
1,523Census 2024 est.

Area codes in Cairo

With 1,523 residents in the Census 2024 estimate, Cairo sits in Alexander County, Illinois. NANPA lists 8 exchanges for its rate center across 2 area codes; 618 has the most (5, 63%). 618 is part of an overlay with 730, so a new local number in Cairo may carry any of those codes depending on which have numbers available. Cairo is in the Central time zone.

According to NANPA's dialing-plan data, local calls within 618 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits.

Area codes with exchanges in Cairo, IL
Area codeExchanges hereShareIn service sinceOverlay withTime zone
618563%1947730Central
730338%2023618Central

Source: NANPA utilized central office code file and NPA report, dated 10/01/2026.

Who holds Cairo phone exchanges

8 carriers hold the 8 exchanges assigned to Cairo's rate center. Cellco Partnership d/b/a Verizon Wireless - Il has the most, with 1. 8 of them are pooled codes, which the holder shares with other carriers in blocks of 1,000 numbers. A business number in Cairo can come from any of these blocks; once it is yours, porting lets it move between providers.

Carriers holding exchanges in Cairo, IL
Carrier (NANPA operating company)ExchangesShare
Cellco Partnership d/b/a Verizon Wireless - Il113%
Vonage America LLC113%
Illinois Bell Tel CO113%
Ip Horizon LLC113%
Commio, LLC113%
Callworks Corporation113%
Terra Nova Telecom INC.113%
Ahoi LLC113%

Carrier names are the operating company (OCN) names on NANPA's utilized central office code file dated 10/01/2026. A carrier holding a code may port numbers to other carriers.

Local prefixes for Cairo

Each prefix below is a block of up to 10,000 numbers that NANPA assigned to Cairo's rate center (CAIRO). The earliest assignment date recorded in the file for these codes is 2004. 6 of the 8 were assigned in 2020 or later.

Prefixes assigned in Cairo, IL
Area codePrefixes (NXX)
618306, 621, 734, 805, 930
730225, 333, 465

Source: NANPA utilized central office code file.

When Cairo's exchanges were assigned

Assignment dates show when each block of Cairo numbers was added to the local supply.

Cairo, IL: exchanges by decade assigned
Decade assignedExchangesShare
2000s114%
2020s686%

Assignment dates as recorded in NANPA's utilized code file; codes without a recorded date are excluded.

Rate centers and local calling in Cairo

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

Keeping an existing Cairo number costs nothing on Callata, because porting is free; a new number depends on what carriers have open in 618 when you pick it.

Who does business near Cairo

Cairo is part of the Cape Girardeau, MO-IL metro area, home to 98,862 people in 2024. County Business Patterns counted 2,609 business establishments in the Cape Girardeau, MO-IL metro area in 2023, employing 41,675 people. The largest sectors by establishment count are retail trade (401), health care and social assistance (349), and other services (except public administration) (284).

Selected industries in the Cape Girardeau, MO-IL metro area, 2023
IndustryEstablishmentsEmployeesEmployees per establishment
Limited-service restaurants871,91722.0
Full-service restaurants851,96723.1
Insurance agencies and brokerages792753.5
Physician practices611,02816.9
Law offices341584.6
Landscaping services34852.5
Dental offices322698.4
General automotive repair shops311324.3

Selected small-business industries (six-digit NAICS) covered by these guides. Source: Census County Business Patterns 2023.

A Cairo number on Callata

For $99 a month, Callata puts a team of up to 5 on one plan ($20 for each person after that): up to 3 local numbers, unlimited inbound calls, a pooled allowance of 1,500 outbound US and Canada minutes per user, browser and cell calling, voicemail transcription with urgency triage, recorded calls with AI summaries and business-hours routing, with E911 on every number.

If you already have a number in Cairo, porting it to Callata is free. Texting from a local number requires a one-time carrier registration (10DLC, $49), and the numbers available in any area code depend on carrier inventory when you choose them.

Optional AI agents (receptionist, sales, support or scheduler) can answer calls after hours or when nobody picks up, take messages, text, email and transfer to your team. They are billed from prepaid AI minutes at $0.25 per minute, identify themselves as AI, and may only place outbound calls to people who consented, between 8am and 9pm.

Per-seat phone plans multiply by headcount. For the rounded average establishment size in the Cape Girardeau, MO-IL metro area, 16 users on RingCentral RingEX Core come to $480.00 a month and on Ooma Office Pro $399.20, at month-to-month list prices checked September 28, 2026. On Callata the same 16 people cost $319.00 a month, less than either per-seat plan.

Monthly list price for a 16-person team
Provider (plan)Pricing basisPer monthPer year
Callata (Callata Office)$99 incl. 5 users, $20 per extra user$319.00$3,828.00
Quo (Starter)$19.00 per user$304.00$3,648.00
Nextiva (Core)$23.00 per user$368.00$4,416.00
Ooma (Office Pro)$24.95 per user$399.20$4,790.40
Dialpad (Standard)$27.00 per user$432.00$5,184.00
RingCentral (RingEX Core)$30.00 per user$480.00$5,760.00

Competitor prices are each vendor's published month-to-month list price per user for its lowest plan that includes business calling and texting, checked September 28, 2026: Quo Starter $19, Nextiva Core $23, Ooma Office Pro $24.95 (Essentials excludes texting; one-time $29.95 activation not included), Dialpad Standard $27, RingCentral RingEX Core $30 ($20 billed annually). Prices exclude taxes and fees and may change; annual contracts lower some competitors' prices.

Frequently asked questions

What area code is Cairo, IL?

Cairo has exchanges in 618 and 730; 618 has the most.

How many phone companies have exchanges in Cairo?

8, holding 8 exchanges between them, according to NANPA's 10/01/2026 file.

Can I keep my existing Cairo business number?

Yes. Porting an existing number to Callata is free. Texting from it starts after carrier registration (10DLC), a one-time $49 fee.

How much is a business phone line in Cairo?

Callata is $99 a month with 5 users included, then $20 per additional user, with up to 3 local numbers; 16 users come to $319.00 a month. For comparison, 16 users on RingCentral RingEX Core list at $480.00 a month (checked September 28, 2026).