The telecommunications industry in Illinois is a vibrant ecosystem fostering innovation, seamless connectivity, and robust infrastructure. Housing 23 significant players ranging from cellular service providers to telecom support services, the sector is an amalgamation of variety and growth potential. The companies offer diverse services such as cellular service, high-speed internet, data networking, voice services, home security, data center solutions, technical support and more, catering to a wide range of customer needs. With heavy investments in creating secure, reliable and high-speed connectivity solutions, these companies are on track to propel Illinois towards becoming a technology hub.


Top 23 telecommunications companies in Illinois

1. UScellular

  • Website: uscellular.com
  • Headquarters: Chicago, Illinois, United States
  • Founded: 1983
  • Headcount: 5001-10000
  • Latest funding type: Grant
  • LinkedIn

UScellular is a telecommunications company that offers cellular service, products, technical support, career opportunities, and more.


2. Consolidated Communications

  • Website: consolidated.com
  • Headquarters: Mattoon, Illinois, United States
  • Founded: 1894
  • Headcount: 1001-5000
  • Latest funding type: Post Ipo Debt
  • LinkedIn

Consolidated Communications is a telecommunications company that helps telecom companies compete and grow. They offer services such as high-speed internet, streaming TV, VoIP phone, and home security. They provide data networking, voice, data center, managed, and cloud services for large companies. They also offer industry solutions and wholesale services.


3. FairPoint Communications

  • Website: fairpoint.com
  • Headquarters: Mattoon, Illinois, United States
  • Founded: 1894
  • Headcount: 1001-5000
  • Latest funding type: Grant
  • LinkedIn

FairPoint is a telecommunications company that provides a range of services including residential, business, and wholesale solutions. They offer internet, phone, and other communication services to customers in various areas. FairPoint is focused on delivering reliable and fast connectivity to meet the needs of individuals and businesses.


4. Windstream Wholesale

Windstream Wholesale is a company that provides nationwide coverage for Ethernet, wavelength, dark fiber, managed spectrum, IP transit, dedicated internet access, and colocation services. They offer fast and flexible solutions tailored to meet the business outcomes of their customers.


5. Charles Industries, LLC

Charles Industries is a company that specializes in providing solutions for telecom, wireless, utility, and broadband CATV industries. They offer a wide range of products including fiber optic solutions, pedestals & housings, cabinets & enclosures, and copper transmission solutions.


6. Telnyx

  • Website: telnyx.com
  • Headquarters: Chicago, Illinois, United States
  • Founded: 2009
  • Headcount: 201-500
  • Latest funding type: Seed
  • LinkedIn

Telnyx is a global communications company that offers voice, SMS, and video solutions. They provide phone numbers and coverage in over 130 countries, allowing businesses to send and receive messages to engage with customers. Telnyx also offers cloud object storage and IoT connectivity. They serve a variety of customer groups, including contact centers, small businesses, and managed service providers.


7. ExteNet Systems, LLC

  • Website: extenetsystems.com
  • Headquarters: Lisle, Illinois, United States
  • Founded: 2002
  • Headcount: 201-500
  • Latest funding type: Series Unknown
  • LinkedIn

ExteNet Systems is a leading provider of converged communications infrastructure and services addressing outdoor and in-building wireless, fiber and other advanced connectivity needs of its customers.


8. TBI Inc.

  • Website: tbicom.com
  • Headquarters: Chicago, Illinois, United States
  • Founded: 1991
  • Headcount: 201-500
  • Latest funding type: Acquired
  • LinkedIn

TBI is a leading technology services distributor, offering a comprehensive portfolio of connectivity, collaboration, continuity, and cybersecurity products. Their solutions include fiber internet access, custom ethernet services, data center solutions, and private cloud connectivity. TBI is committed to supporting their channel partners and providing them with cutting-edge technologies and subject matter expertise.


9. Westell

  • Website: westell.com
  • Headquarters: Aurora, Illinois, United States
  • Founded: 1980
  • Headcount: 51-200
  • Latest funding type: Ipo
  • LinkedIn

Westell Technologies, Inc. is a leading provider of high-performance network infrastructure solutions. They specialize in innovation and differentiation at the edge of communication networks, where end users connect. With a comprehensive range of products and solutions, Westell enables service providers and network operators to improve performance and reduce operating expenses. Their trusted partnership has resulted in millions of successful product deployments worldwide.


10. Roaming Networks Inc.

Roaming Networks Inc is a telecommunications company that offers a complete and evolving telecommunication service. They provide system installation, maintenance, and construction services for residential and commercial electrical projects. Their expertise extends to wireless networks, fiber, radio, and MW networks. Roaming Networks Inc prioritizes working together with their community to enhance the overall quality of life through efficient communication and connectivity.


11. S-NET Communications, Inc.

S-NET is a cloud-based communications and networking services provider that offers integrated voice and data packages. Their solutions include SD-WAN hardware, cloud phone systems, fiber solutions, and cloud contact center services. They specialize in simplifying network management and security policies while delivering reliable and fast connectivity. S-NET's customer service team is known for its unbeatable, best-in-class support. They cater to a wide range of customer groups and offer tailored solutions to meet unique needs.


12. ICOMM, Inc.

  • Website: icomm.co
  • Headquarters: Forest Park, Illinois, United States
  • Founded: 1993
  • Headcount: 51-200
  • LinkedIn

ICOMM is a services-first telecom management and consulting company that offers IT Telecom Expense Management, support services for fixed telephony, UCaaS and mobility services, contract/RFP management and network transformation consulting, and Bill Payment Services. They serve clients across North America, Europe, Asia Pacific, and beyond.


13. i3 Broadband

  • Website: i3broadband.com
  • Headquarters: East Peoria, Illinois, United States
  • Headcount: 51-200
  • Latest funding type: Acquired
  • LinkedIn

i3 Broadband offers reliable high-speed internet connection for working and living. They provide fiber internet and Wi-Fi services, streaming TV, phone services, and affordable connectivity programs. They prioritize customer satisfaction and aim to eliminate shared network congestion and security risks. With a focus on advanced technology and putting customers at the center, i3 Broadband delivers a next-generation technology solution.


14. Wav, LLC.

  • Website: wavonline.com
  • Headquarters: Aurora, Illinois, United States
  • Founded: 1990
  • Headcount: 51-200
  • LinkedIn

WAV LLC is a wired and wireless equipment distributor specializing in connecting customers to the Internet. They offer a wide range of products including wireless broadband, LTE, fiber, antenna networking, and Wi-Fi solutions. Their tech-savvy engineers provide support throughout the installation and project stages.


15. Vinakom

  • Website: vinakom.com
  • Headquarters: Schaumburg, Illinois, United States
  • Founded: 1991
  • Headcount: 51-200
  • LinkedIn

VinaKom is a full-service telecommunications provider offering managed data centers, SD-WAN networking, VOIP services, and customized communication solutions. With over 1500 miles of fiber-optic services in the Chicagoland area, VinaKom provides gigabit speeds and reliable network connectivity. Their services prioritize network traffic and enhance security, ensuring improved data packet exchange and network reliability. VinaKom is dedicated to delivering exceptional value and customer satisfaction through a single point of contact.


16. DLS Internet Services

  • Website: dls.net
  • Headquarters: Lake In The Hills, Illinois, United States
  • Founded: 1994
  • Headcount: 11-50
  • LinkedIn

DLS.net is a company that provides cloud phone systems for businesses, offering services such as virtual PBX, hosted PBX, SIP trunking, and online meetings. They specialize in reliable network consulting and internet connectivity for small businesses. DLS.net also offers flexible phone leasing options to avoid big capital spending. Their internet phone service utilizes Voice over Internet Protocol (VoIP) technology, connecting users to the global public switched telephone network (PSTN).


17. Telcom Innovations Group, LLC

  • Website: ask-tig.com
  • Headquarters: Itasca, Illinois, United States
  • Founded: 1997
  • Headcount: 11-50
  • LinkedIn

Ask-Tig is a technology company that offers VOIP communication platforms and business phone systems. They provide services such as premise or hosted IP-PBX, UCaaS solutions, and network solutions. Their offerings include digital phones, collaboration and mobility software, voicemail, contact center solutions, and network security.


18. Coeo Solutions, LLC

Coeo Solutions is a telecommunications company that offers a range of innovative communication solutions to help businesses improve their connectivity. With a focus on providing reliable and scalable services, Coeo assists organizations in transitioning to the latest technologies while also supporting legacy systems. Their geographically redundant solutions ensure 100% uptime, making them a trusted partner for enterprise and mid-sized businesses globally.


19. Telesource Services, Inc.

MyTelesource.com is a company that offers telecommunications solutions to businesses. They provide a range of services including voice, data, and internet solutions. With their expertise in the industry, they aim to help businesses improve their communication infrastructure and enhance their overall productivity.


20. Digital Management Solutions

  • Website: dmsstl.com
  • Headquarters: Swansea, Illinois, United States
  • Founded: 2005
  • Headcount: 11-50
  • LinkedIn

DMSSTL.com is a telecommunications company offering a wide range of solutions for businesses. They provide services such as VOIP, data solutions, internet and data services, MPLS networking, and hosted solutions. With over 50 telecom companies competing for their business, DMSSTL.com guarantees better products at better prices.


21. 312 Communications Inc.

312 Communications offers communication and technology solutions, specializing in IP telephony, data analytics, network connectivity, and contact/call center management.


22. The HCK Group

The HCK Group provides businesses with a full range of integrated communication solutions, including collaboration, video conferencing, contact center, mobility, and data networking.


23. Interstate Technologies

Interstate Technologies is a provider of telecommunications systems and network services, offering a full-suite of technology solutions to clients in the Chicago metropolitan area. They specialize in blending telephone and data communication services, including phone systems, voicemails, VoIP, ACD, network configuration, cabling, server/desktop virtualization and more.


Want to find more telecommunications companies?


If you want to find more companies that offer quality cellular services, fast internet, technical support, and more you can do so with Inven. This list was built with Inven and there are hundreds of companies like these globally.


With Inven you'll also get to know the company's:


  • Ownership: Which of these are private equity backed? Which are family-owned?
  • Contact data: Who are the owners and CEO's? What are their emails and phone numbers?
  • Financials: How do these companies perform financially? What are their revenues and profit margins?

...and a lot more!