Exhibit 99.1

For Immediate Release

Mediacom LLC and Mediacom Capital Corporation Announce Redemption

of 7 ¹⁄₄% Notes Due 2022

Mediacom Park, NY - January 12, 2017 - Mediacom LLC and Mediacom Capital Corporation, wholly-owned subsidiaries of Mediacom Communications Corporation, today announced that they have called for redemption the entire outstanding principal amount of their 7 ¹⁄₄% Senior Notes due 2022 (the “Notes”). The redemption date for the Notes is February 15, 2017 (the “Redemption Date”). In accordance with the redemption provisions of the Notes and the related indenture, the Notes will be redeemed at a price equal to $1,036.25 for each $1,000 principal amount outstanding. The aggregate principal amount of Notes outstanding is $250 million, and the redemption price for all outstanding Notes is approximately $259 million. The February 15, 2017 interest payment will be made in the usual manner and interest on the Notes will cease to accrue on and after the Redemption Date.

The Notes are to be surrendered to Delaware Trust Company, as paying agent. For information, call 1-877-374-6010.

This announcement does not constitute an offer to purchase or redeem the Notes.

About Mediacom Communications

Mediacom Communications Corporation is the 5th largest cable operator in the U.S. serving over 1.3 million customers in smaller markets primarily in the Midwest and Southeast. Mediacom offers a wide array of information, communications and entertainment services to households and businesses, including video, high-speed data, phone, and home security and automation. Through Mediacom Business, the company provides innovative broadband solutions to commercial and public sector customers of all sizes, and sells advertising and production services under the OnMedia brand. More information about Mediacom is available at www.mediacomcable.com.

Forward Looking Statements

This press release contains forward-looking statements that involve risks and uncertainties. Factors that could cause actual results to differ materially from those expressed or implied by the forward-looking statements in this press release and the other risks and uncertainties are discussed in our Annual Report on Form 10-K for the year ended December 31, 2015.

Mediacom Communications Corporation

1 Mediacom Way • Mediacom Park, NY 10918 • 845-443-2600 • Fax 845-443-2639