Optimum vs. CMS Internet

Whether you’re researching Optimum vs. CMS Internet internet service at your current address, comparing internet options for potential locations, or just researching alternatives, this detailed comparison will help you understand which provider best suits you.

Optimum and CMS Internet compete directly in approximately 0.00% of their service areas, with Optimum covering 20,642,705 people nationwide and CMS Internet serving 153,798. Optimum primarily delivers internet through a cable connection; CMS Internet specializes in fiber connections. Jump directly to specific sections using the links below, or continue reading for our comprehensive comparison of Optimum and CMS Internet’s availability, speeds, pricing, and customer satisfaction.

Jump to: Availability | Speeds | Plans & Pricing | Customer Reviews | Fees

Optimum vs. CMS Internet | Pros & Cons

Optimum vs. CMS Internet | Availability

Optimum and CMS Internet have distinct coverage footprints across the United States. Our interactive map shows exactly where each provider offers service and where they overlap, helping you understand your options.

Both Providers Available | Optimum Available | CMS Internet Available | No Coverage

Optimum currently offers internet service in 3,357 cities and 358 counties across 21 states, reaching approximately 20,642,705 residents. Their service area includes major markets like New York, NY; Brooklyn, NY; and Bronx, NY. By comparison, CMS Internet serves 153,798 residents in 114 cities and 11 counties in 1 state, with a presence in population centers such as Mount Pleasant, MI; Grand Rapids, MI; and St. Louis, MI.

Internet availability can vary significantly even within specific cities and zip codes. For the most accurate information about Optimum and CMS Internet at your location, use our address search tool:

Optimum vs. CMS Internet | Speeds & Technology

Optimum and CMS Internet utilize different network technologies to deliver internet service, resulting in varying speed capabilities across their service areas.

Across their service areas, Optimum primarily delivers internet through cable, available to 99.8% of their customers. They also offer fiber to 56.0% of their coverage area. CMS Internet relies on fiber technology, which comprises 25.8% of their network, with fixed wireless available in 98.7% of their service locations.

In terms of potential speeds across the country, Optimum offers higher overall speeds, with speeds for most covered areas averaging 4,787 Mbps compared to CMS Internet’s average speed of 378 Mbps. When examining their overlapping service areas, Optimum delivers faster speeds in 0.00% of locations where both providers operate, similar speeds in 0.00%, and slower speeds in 0.00%.

The availability of each provider’s fastest technology varies significantly by location. Optimum’s premium Fiber service reaches 56.0% of their coverage area. Meanwhile, CMS Internet’s top-tier Fiber is available to 25.8% of their footprint. Even within the same technology type, speed offerings can vary based on local infrastructure investments.

Optimum vs. CMS Internet | Plans & Pricing

Below are the current internet plans and pricing details for Optimum and CMS Internet, drawn from our independently maintained pricing database. The source and verification date for each provider's plans are noted beneath the table.

Provider representatives can send plan or pricing updates through our contact page; verified changes publish shortly after review.

Optimum Plans

CMS Internet Plans

Most households with 3-5 users need download speeds of at least 100 Mbps for smooth streaming, video conferencing, and everyday internet usage. Larger households or those with heavy users (gamers, 4K streamers, or remote workers) should consider plans with speeds of 300 Mbps or more for optimal performance.

Any prices listed are the base service rates and may not include additional charges such as equipment fees, installation costs, or other service-related expenses. For a comprehensive view of all potential charges, refer to our Fees & Details section below.

Optimum vs. CMS Internet | Customer Ratings & Reviews

Compare how real customers rate Optimum and CMS Internet based on our comprehensive database of verified customer reviews across all service types.

Fees vary by plan and location. The fees shown apply to most plans; check with the provider for costs specific to your plan.

When comparing internet providers, remember that advertised prices rarely tell the complete story. Equipment fees alone can add $10-15 per month to your bill, while installation charges, early termination fees, and data overage penalties can significantly increase your total cost of service. Consider these additional costs alongside monthly rates when determining which provider offers the better value for your specific needs.

Optimum vs. CMS Internet | Top Cities

Optimum serves 3,357 cities while CMS Internet is available in 114 cities nationwide. The tables below highlight their largest markets and areas where customers can choose between both providers.