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.
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.
| Carrier (NANPA operating company) | Exchanges | Share |
|---|---|---|
| Cellco Partnership d/b/a Verizon Wireless - Il | 1 | 13% |
| Vonage America LLC | 1 | 13% |
| Illinois Bell Tel CO | 1 | 13% |
| Ip Horizon LLC | 1 | 13% |
| Commio, LLC | 1 | 13% |
| Callworks Corporation | 1 | 13% |
| Terra Nova Telecom INC. | 1 | 13% |
| Ahoi LLC | 1 | 13% |
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.
| Area code | Prefixes (NXX) |
|---|---|
| 618 | 306, 621, 734, 805, 930 |
| 730 | 225, 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.
| Decade assigned | Exchanges | Share |
|---|---|---|
| 2000s | 1 | 14% |
| 2020s | 6 | 86% |
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).
| Industry | Establishments | Employees | Employees per establishment |
|---|---|---|---|
| Limited-service restaurants | 87 | 1,917 | 22.0 |
| Full-service restaurants | 85 | 1,967 | 23.1 |
| Insurance agencies and brokerages | 79 | 275 | 3.5 |
| Physician practices | 61 | 1,028 | 16.9 |
| Law offices | 34 | 158 | 4.6 |
| Landscaping services | 34 | 85 | 2.5 |
| Dental offices | 32 | 269 | 8.4 |
| General automotive repair shops | 31 | 132 | 4.3 |
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.
| Provider (plan) | Pricing basis | Per month | Per 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).