block group Density
per acre		 Units
per acre		 Platted Decades
Built Up		 Primary Housing Type Neighborhood
Tract 139, Blockgroup 3 102.24 45.54 1839 1860 – 1870 single family attached Park Slope
Tract 153, Blockgroup 2 93.66 46.15 1839 1860 – 1880 single family attached Park Slope
Tract 181, Blockgroup 1 63.79 32.7 1839 1860 – 1890 single family attached Fort Greene
Tract 253, Blockgroup 3 25.71 11.36 1839 1860 – 1910 two to four flats Bedford-Stuyvesant
Tract 271.01, Blockgroup 3 36.86 16.67 1839 1860 – 1890 two to four flats Bedford-Stuyvesant
Tract 533, Blockgroup 1 185.78 41.74 1839 1860 – 1880 two to four flats Williamsburg
Tract 569, Blockgroup 2 37.94 17.79 1850 1860 – 1920 two to four flats Greenpoint
Tract 571, Blockgroup 2 155.85 63.1 1850 1860 – 1890 apartments above retail Greenpoint
Tract 573, Blockgroup 2 85.21 35.94 1850 1860 – 1890 two to four flats Greenpoint
Tract 992, Blockgroup 1 52.64 18.35 1880 1860 – 1920 single family detached Canarsie