Until the early 1970s, passenger service continued north from Danbury to Canaan, Connecticut, and Pittsfield, Massachusetts.

From 1976 until 1983, freight and passenger service on the line was provided by the Consolidated Rail Corporation (Conrail) under a contract with Connecticut.

[8] As of 2022[update], the Connecticut Department of Transportation was studying the feasibility of installing catenary wire on the Danbury Branch.

At the museum are examples of rolling stock retired from service as well as an indoor display of model trains.

Over $60 million was allocated to the Danbury Branch, approximately half from the economic stimulus package of 2009, to improve current stations, build siding tracks, and install a new signal system.

M. Jodi Rell held a press conference with local politicians at the Cannondale station on July 28, 2009, to announce that construction was scheduled to start in late 2009 and finish in 2011.

[14] The new signal system finally began operation in 2013, but extensive work was still ongoing in 2014 because of unresolved problems with the drop gates at grade crossings.

[11] In May 2015, Governor Dannel Malloy's five-year plan for transportation improvements called "Let's Go CT" only mentioned one point for the Danbury Branch.

[18] However, at the same time a 30-year plan was published that does envision electrification of the Danbury Branch, extending service to New Milford and electrifying that extension.

[20] Plans to reopen the long-closed Wall Street station are under consideration in wake of new housing developments in Norwalk Center.

Two weekday trains serve the intermediate stations (Rowayton, Darien, and Noroton Heights) in peak direction.

The following services that connect to the Danbury Branch are Amtrak,[22] Metro-North Railroad,[23] Norwalk Transit District,[24] and HARTransit.