Bob is a 65-year-old semi-retired lawyer who returned to his hometown in Maine after living in New York City. He is an unassuming, deeply empathetic man who often wears old jeans and a frayed jacket. He secretly struggles with long-held guilt regarding a childhood accident involving his father. His natural inclination to listen and absorb the emotional burdens of others makes him a steadying presence for his friends and clients, though this habit frequently leaves him exhausted.

Lucy is a successful writer who moved to Maine with her ex-husband at the onset of the pandemic. She has a quiet, observant demeanor that locals sometimes view with suspicion. Having survived extreme childhood poverty in Illinois, she carries a lingering sense of loneliness that makes her highly attuned to the isolation of others. She spends her time seeking meaningful connections, whether by observing nature or trading stories with neighbors.

Olive is a 90-year-old retired high school math teacher who has lived in the Crosby area her entire life. She has a reputation as a blunt curmudgeon who easily intimidates people. Beneath her abrasive exterior lies a deeply sensitive woman frightened by the vulnerability that comes with caring for others. She initiates meetings with Lucy to share local histories, slowly realizing the emotional weight of being a storyteller.

Margaret is a Unitarian minister with a strong standing in the local community. Raised Catholic before changing denominations, she dedicates immense energy to her sermons and congregants. She is highly focused on her career, which occasionally causes her to appear self-absorbed or dismissive of her husband's daily life and concerns.

Matt is a small, quiet man with graying hair and oversized black glasses. He is a completely self-taught artist who paints portraits of pregnant women in his upstairs studio. Having survived childhood leukemia, he lived quietly with his mother until her sudden disappearance made him the target of police suspicion and local gossip. He exists almost entirely outside of normal social circles.

Diana is Matt's older sister and works as a high school guidance counselor in Connecticut. She harbors intense hatred for her hometown and deeply resents her mother due to unaddressed childhood trauma. Recently divorced after her husband had an affair with her best friend, she tries to distance herself from her family's dysfunction while still feeling obligated to secure legal help for her brother.

Gloria is a former school cafeteria worker whose sudden disappearance sparks a local police investigation. Most town residents remember her by the cruel childhood nickname "Bitch Ball," a reference to her weight and her history of bullying students. Beneath her aggressive public persona, she documented her deep-seated anxieties and profound self-loathing in private journals.

Jim is Bob's older brother, a retired and highly successful lawyer living in Park Slope, New York. He possesses an abrasive, bullying personality that masks intense insecurity and deep-rooted guilt regarding a childhood accident involving his father. His unpredictable mood swings and tendency to freeze people out create constant anxiety for his family members.

William is a New York transplant living platonically with his ex-wife Lucy. Raised by a German immigrant father, he is practical, grounded, and feels a strong sense of duty. He views his primary responsibility as taking care of Lucy, a dynamic that sometimes isolates them both from the surrounding rural community.

Susan is Bob and Jim's sister, a lifelong resident of the Crosby area. She acts as a grounded counterweight to her brothers' emotional turbulence. She enjoys keeping up with town news and frequently meets a former local police chief for morning coffee, harboring quiet hopes for a romantic connection.

Pam is Bob's first wife. She currently lives alone in a New York apartment after separating from her second husband. Having developed an alcohol use disorder during the pandemic isolation in the Hamptons, she is actively working to rebuild her life and frequently turns to Bob for emotional support and advice.

Isabelle is Olive's 91-year-old best friend. She recently transitioned from an independent retirement community to a nursing home, a move that causes deep distress for both women. She relies heavily on Olive's daily visits to maintain a sense of normalcy as her health gradually declines.

Helen is Jim Burgess's wife, living in New York. Diagnosed with a terminal illness, she isolates herself from visitors during her final months. She worries deeply about the fractured relationship between her husband and her son, reaching out to Bob to mediate their conflicts.

Larry is Jim and Helen's adult son. He harbors intense resentment toward his father, frequently clashing with him over past family dynamics and perceived failures. His combative attitude causes severe friction within the Burgess family.

Charlene is a working-class Maine local who cleans apartments, including Olive Kitteridge's, and volunteers at the community food pantry. Despite differing political views and backgrounds, she forms a tentative friendship with Lucy Barton that is later tested by outside influences.

Mrs. Hasselbeck is an elderly Crosby resident who relies on grocery deliveries during and after the pandemic. She enjoys chatting and sharing town gossip with Bob, who routinely waters down her gin to protect her health.

Gerry is the former police chief of Shirley Falls. He dated Susan in high school and now meets with her regularly to discuss local news and criminal investigations, quietly wishing their relationship could develop into something more.