City ratings are often based on a variety of factors, including quality of life, economic opportunities, safety, education, and more. A rating of 7 or higher suggests a city with relatively high living standards and desirable living conditions. A rating below 5 might indicate challenges or lower overall satisfaction.

This is a broader rating that takes into account multiple factors affecting the overall appeal of a city. Ratings above 7 might indicate a highly attractive city, while those below 5 suggest areas for improvement.

City density refers to the concentration of people living within a city's geographic area. It is typically expressed as the number of residents per square mile or square kilometer. Higher density indicates busier streets, more crowded living conditions, and increased access to amenities and services.