Figure 10-1 depicts the most common scheme for numbering split census tracts (represented by Census Tract 6) and an alternative numbering scheme that some census statistical areas committees have chosen to use (represented by Census Tract 12). If two census tracts merge, the Census Bureau recommends that the census statistical areas committee retain the number of the more populous census tract.
The Census Bureau provides a unique census tract/BNA identifier (a numeric suffix of .99) to report statistics about people aboard civilian or military ships. These crews of vessels census tracts/BNAs refer to the water near the piers, docks, or onshore facilities associated with the ships; they do not represent any land area or any specific area of water.
Figure 10-1. Recommended Renumbering of Split Census Tracts
