Layer Estimates:

Layer: Centroids_of_2010_Census_ZIP_Code_Tabulation_Areas (ID:0)
Count: 401
Extent:

XMin: -8271587.39850388
YMin: 4927232.03929751
XMax: -8188986.35359527
YMax: 5010762.42466485
Spatial Reference: 102100 (3857)