Layer Estimates:

Layer: Population Density_ 2000_ by Terrestrial Ecoregion (ID:0)
Count: 14459
Extent:

XMin: -20037507.0671618
YMin: -30240971.9583861
XMax: 20037507.0671618
YMax: 18417910.224784
Spatial Reference: 102100 (3857)