Which statement accurately compares census tracts and urbanized areas?

• A. It is typically larger in population than an urbanized area
• B. It uses a fixed geographic size rather than population to define its area
• C. It is typically smaller in population than an urbanized area
• D. It is defined by standards identical to those of an urbanized area

Answer: (C)

The key idea is how these two geographic units are defined and what their typical populations look like. Urbanized areas are designed to capture densely settled urban space and have at least 50,000 people in total, formed by combining multiple tracts that meet density criteria. Census tracts, by contrast, are small statistical units intended to contain about 4,000 people on average, with boundaries that approximate neighborhoods and can vary in size to meet that population target. Because of this, a census tract is usually much smaller in population than an urbanized area, which aggregates many such tracts to reach a 50,000-plus population. The other statements don’t fit: a fixed geographic size isn’t how tracts are defined, and urbanized areas aren’t defined by the same standards as individual tracts.