Block Group: A smaller subdivision within a census tract that contains around 600 to 3,000 people. It provides more detailed local data than the larger census tract.
Urban Area: An integrated region consisting of densely populated cities and surrounding suburbs that share social, economic, and environmental characteristics.
Demographics: The statistical data relating to the population, such as age, gender, race, income level, education level, etc., which helps in understanding its composition and changes over time.