Massachusetts and Neighboring State, USA The shapefile contains the following variables: 1. FID - Field identifier 2. OBJECTID - The unique ID for each record in the table 3. STATE_FIPS - Federal Information Processing Standard (state code) 4. NAME - City name 5. AREALAND - City land surface area in square miles 6. AREAWATER - City water surface area in square miles 6. SHAPE - Type of coverage (i.e. Point) 8. ST - State sOURCE: ESRI