Layer Estimates:

Layer: CENSUS2010BLOCKGROUPS_POLY (ID:0)
Count: 4979
Extent:

XMin: -8185683.58406637
YMin: 5046378.30873948
XMax: -7781072.91260848
YMax: 5294988.7704973
Spatial Reference: 102100 (3857)

Layer: CENSUS2010BLOCKS_POLY (ID:1)
Count: 154621
Extent:

XMin: -8185683.58406637
YMin: 5046378.30873948
XMax: -7781072.91260848
YMax: 5294988.7704973
Spatial Reference: 102100 (3857)

Layer: CENSUS2010TRACTS_POLY (ID:2)
Count: 1472
Extent:

XMin: -8185683.58406637
YMin: 5046378.30873948
XMax: -7781072.91260848
YMax: 5294988.7704973
Spatial Reference: 102100 (3857)