What describes the Public Land Survey System (PLSS) in terms of townships?

The Public Land Survey System (PLSS) is a method used primarily in the western United States to survey and divide land. In this context, the correct choice accurately describes a key characteristic of townships within the PLSS: each township is indeed structured to measure 6 miles on each side, creating an area of 36 square miles. This standardized size allows for uniformity in land management and assessment.

The size of townships in the PLSS is significant for various reasons, including property mapping, taxation, and land disputes. Knowing that each township covers a specific, consistent area facilitates easier identification and referencing of parcels of land.

Other options do not accurately reflect the characteristics of townships in the PLSS. For instance, each township does contain sections, specifically 36 sections of one square mile each, which provide a further means of dividing land. Additionally, townships are not unlimited in size; they adhere to the 6-mile by 6-mile framework. Lastly, the presence of both urban and rural areas is typical in townships, so limiting them to only urban areas would misrepresent the nature of townships as defined by the PLSS.