Postal Service 474 Practice Exam 2025 – All-in-One Resource to Master Your Exam Preparation!

The calculation of postage for packages is determined by several key factors: weight, dimensions, and mailing zone. Weight refers to how heavy the package is, which directly influences the postage rate; heavier packages typically incur higher fees. The dimensions (length, width, and height) of the package also matter, as certain services charge based on the size of the parcel, especially if it exceeds standard size limits.

The mailing zone is another critical element that considers the distance the package must travel from the sender to the recipient. The United States Postal Service categorizes different areas and zones to apply appropriate rates based on this distance. Together, weight, dimensions, and the mailing zone establish a comprehensive method for calculating postage, ensuring that costs are fair and reflective of the service provided.

Other factors like shape or the sender's location might impact specific services or rates, but they do not offer a complete picture for general postage calculation. Thus, the answer that includes all three – weight, dimensions, and mailing zone – encapsulates the full approach that the Postal Service uses for postage calculation.