Column Name             Type                Column Definition 
OBJECTID                int                 Unique identifier for the record
Shape                   varchar(20)         Type of shape: point, line, polygon, multipoint, or multipatch
StateFIPS               varchar(2)          State FIPS code
CountyFIPS              varchar(3)          County FIPS code
APN                     varchar(50)         Assessor's Parcel Number: a unique number assigned to real property by the tax assessor of the property's jurisdiction
Censuskey               varchar(16)         Fifteen or sixteen-digit key that represents: State (2) + County (3) + Tract (6) + Block Group Number (4) + Optional Block Suffix (1). The suffix is used to indicate if any changes were made the to Block Group Number
CensuskeyDecennial      varchar(15)         Fifteen-digit key that represents: State (2) + County (3) + Tract (6) + Block Group Number (4)
Latitude                decimal(18,10)       Latitude coordinate of the centroid point inside of parcel
Longitude               decimal(18,10)       Longitude coordinate of the centroid point inside of parcel
Area                    decimal(20,11)       Area of the parcel in square meters
Perimeter               decimal(20,13)       Perimeter of the parcel in meters
ShapeWKT                varchar(35000000)   Well-Known Text field
ShapeWKTLength          int                 Well-Known Text field length
Shape_Length            decimal(20,18)       *Length (perimeter) of shape 
Shape_Area              decimal(20,18)       *Area of shape 

* Measurements are in decimal degrees, driven by the original coordinate system.  Not reliable for use.