Thomas is a wealthy, retired merchant in Coketown who promotes a rigid, fact-based philosophy of self-interest. He establishes a local school to enforce these utilitarian views on the next generation, completely dismissing imagination and emotion. He raises his own children under this exact system, forbidding them from engaging in any fanciful play. His absolute certainty in his methods blinds him to his family's growing unhappiness.

Louisa is Thomas Gradgrind's eldest daughter, raised in a strict environment devoid of affection or imagination. The relentless focus on facts leaves her feeling emotionally numb and disconnected from her own desires. She cares deeply for her brother Tom, often sacrificing her own comfort to protect him. To satisfy her father and assist her brother, she agrees to marry a man thirty years older than her.

Tom is Louisa's brother and the eldest son of the Gradgrind family. He deeply resents his father's strict, utilitarian upbringing and reacts by indulging in secret vices. He secures an apprenticeship at Bounderby's bank but finds the work intensely boring. He frequently manipulates Louisa's affection for him to cover his gambling debts and personal irresponsibility.

Sissy is the daughter of a circus performer who is abandoned by her father when he loses his ability to entertain. Thomas Gradgrind takes her into his home and school as a charitable experiment, demanding she abandon her whimsical worldview. Despite intense pressure, Sissy struggles to grasp Gradgrind's cold facts and retains her imaginative, compassionate nature. She slowly becomes a vital, caring presence for the younger Gradgrind children.

Josiah is a wealthy mill owner and banker in Coketown, as well as Thomas Gradgrind's closest friend. He constantly brags about his difficult childhood, claiming his grandmother abandoned him to the gutter, to emphasize his status as a self-made man. He lacks any natural sentiment and views his factory workers as ungrateful machines. He frequently leverages his wealth and power to demand obedience from everyone around him.

Stephen is a hardworking factory hand employed at Bounderby's mill. He lives in deep poverty and remains trapped in a legal marriage to a severely alcoholic woman who frequently disappears and returns to steal from him. He harbors deep affection for his fellow worker Rachael but cannot afford the legal fees required to seek a divorce. He refuses to join the workers' union, which leads to his complete social isolation.

Rachael is a dedicated factory worker in Coketown and Stephen Blackpool's closest friend. She carries herself with quiet dignity and works hard despite the grim conditions of the industrial city. She frequently intervenes to help Stephen, even staying overnight to nurse his dangerously intoxicated wife back to health.

Mrs. Sparsit is a widow from an aristocratic family who now works as Josiah Bounderby's live-in housekeeper. She resents her decline in social status and flatters Bounderby to secure her comfortable position. She looks down on the other residents of Coketown and keeps a highly suspicious eye on Louisa after Louisa marries Bounderby.

James is a wealthy, bored gentleman who comes to Coketown to dabble in politics under Thomas Gradgrind's guidance. He lacks strong moral convictions and approaches life entirely as a cure for his own boredom. He quickly notices Louisa's unhappiness in her marriage and begins a calculated effort to seduce her.

Bitzer is a former student of Gradgrind's school who perfectly internalized the philosophy of pure self-interest. He uses precise dictionary definitions to impress his teachers and secure a job as a porter at Bounderby's bank. He frequently spies on others and reports their activities if he believes it will advance his own career.

Mrs. Pegler is an elderly woman from the country who travels to Coketown once a year. She dresses plainly and saves her money specifically for these annual trips. During her visits, she avoids drawing attention to herself but shows a keen, quiet interest in viewing Josiah Bounderby's properties.

Mr. Sleary manages the traveling circus where Sissy's father once performed. He oversees a transient community of entertainers who rely on mutual support to survive their poverty. He recognizes Sissy's difficult position and kindly advises her to accept Gradgrind's offer of an education.

Mr. Childers is a circus performer working under Mr. Sleary. He understands the shameful reality of why Sissy's father left the circus and helps convey this information privately to Gradgrind and Bounderby.

Stephen's estranged wife is a woman severely affected by the extreme poverty of Coketown. Unable to cope with her difficult life, she developed a severe alcohol addiction and now occasionally returns to Stephen's home unannounced. Her destructive habits keep Stephen legally and financially trapped.

Slackbridge is a fiery union organizer who arrives in Coketown to rally the factory workers against their employers. He gives passionate speeches demanding better working conditions from the mill owners. He enforces strict loyalty among the workers, ruthlessly ostracizing anyone like Stephen who refuses to join the cause.

Mrs. Gradgrind is the timid and constantly exhausted wife of Thomas Gradgrind. She lacks the mental or physical energy to challenge her husband's strict educational regime. She spends her days resting and occasionally offering half-hearted corrections to her children.

Adam is one of Thomas Gradgrind's younger sons, named after the famous economist. He lives at Stone Lodge and receives the same fact-heavy education as his older siblings, though he eventually benefits from Sissy's gentle presence in the home.

Malthus is another of Thomas Gradgrind's younger sons, named to reflect his father's economic philosophies. He is raised under the strict rules of Stone Lodge.

Jane is the younger sister of Louisa and Tom. Because she spends significant time with Sissy during her formative years, Jane develops a much happier and more emotionally balanced personality than her older siblings.