Layer Estimates:

Layer: LowRes_CountyGroups (ID:1)
Count: 2829
Extent:

XMin: -19942601.3872
YMin: 2024002.0758
XMax: 20012952.061
YMax: 11536921.9455
Spatial Reference: 102100 (3857)

Layer: MedRes_CountyGroups (ID:2)
Count: 2829
Extent:

XMin: -19942653.635
YMin: 2023630.835
XMax: 20012862.2854
YMax: 11536907.1229
Spatial Reference: 102100 (3857)

Layer: HiRes_CountyGroups (ID:3)
Count: 2829
Extent:

XMin: -19942590.6658
YMin: 2023652.7986
XMax: 20012847.1793
YMax: 11537127.3334
Spatial Reference: 102100 (3857)