World Population Density, 1996 is a polygon theme representing population density worldwide. Density measures are given in the attribute table as one of nine classes:
0 - unpopulated
1 - < 1 people per square kilometer
2 - 1 - 10 people per square kilometer
3 - 10 - 25 people per square kilometer
4 - 25 - 50 people per square kilometer
5 - 50 - 100 people per square kilometer
6 - 100 - 200 people per square kilometer
7 - 200 - 400 people per square kilometer
8 - 400 - 800 people per square kilometer
9 - > 800 people per square kilometer