age: The person’s age in years, a continuous numerical attribute.
workclass: The employment type or sector the person belongs to.
fnlwgt: A census-related attribute that is a proxy for the demographic background of the people: "People with similar demographic characteristics should have similar weights". 
education: The highest level of education completed, represented as categories like "Bachelors," "HS-grad" (high school graduate), "11th" (11th grade), etc.
education-num: Rank of the achieved education level.
marital-status: The marital status of the person.
occupation: The type of work performed by the person.
relationship: Describes the person’s relationship within a family.
race: Self-reported race.
sex: either "Male" or "Female".
capital-gain: Continuous numerical attribute indicating the profit gained from investment sources aside from wages, salary, and other income.
capital-loss: Continuous numerical attribute indicating the monetary loss from investments apart from wages, salary, and other income.
hours-per-week: The average number of hours worked per week, a continuous numerical attribute.
native-country: The person’s country of origin.
income: Whether the person earns above or below $50K annually, with values of ">50K" and "<=50K".