With the MBTA’s fare and service changes announced last week, commuters will not only spend an average of 23 percent more to get to and from Boston and around the suburbs north of Boston, they’ll also have four bus routes eliminated and another five rerouted.

“Bus routes identified for adjustments were done so after careful consideration of the impact to the customer and the availability of commuting alternatives,’’ said MBTA spokeswoman Lydia Rivera. She said the T’s changes in service, along with fare increases - the first in five years - were necessary to help make up for a $160 million deficit.

The MBTA changes, set to begin on July 1, will not affect most of the bus and rail service in the region. Still, commuters will dig deeper into their pockets, with fares jumping from $1.50 to $2 for a one-way bus ride to Boston; $2 to $2.50 for a subway ride; and commuter rail users, such as those on the Haverhill line, will pay $9.25 for a one-way ticket to Boston, a $2 increase.

Some city officials, including Haverhill Mayor James Fiorentini, said they were relieved that the cuts weren’t deeper. In Haverhill, where investors have built about 500 new apartments downtown within walking distance to the train station, the T had originally proposed cutting train service to Boston on nights and weekends.

“Maintaining the current service is very critical to our whole downtown renaissance,’’ said Fiorentini. “We have about 800 new residents downtown and $150 million in new investment, and many of these people moved here because of the train service being able to get them to and from Boston.’’