The crossword solution for the term 'all the inhabitants of a place' is 'POPULATION'. POPULATION refers to the total number of people living in a certain area. It is used to measure the size and density of a POPULATION, as well as its growth rate. POPULATION can be used to study the characteristics of a POPULATION, such as age, gender, ethnicity, and education level. POPULATION data is also used to understand the impact of social, economic, and environmental factors on a POPULATION.