block group Density
per acre		 Units
per acre		 Platted Decades
Built Up		 Primary Housing Type Neighborhood
Tract 3.01, Blockgroup 1 217.78 94.32 1810 1820 – 1890 five story apartments Brooklyn Heights
Tract 5, Blockgroup 2 112.83 72.7 1816 1820 – 1900 four story apartments Brooklyn Heights
Tract 69, Blockgroup 2 75.92 35.2 1839 1840 – 1970 apartments above retail Boerum Hill
Tract 75, Blockgroup 3 45.98 21.52 1839 1840 – 1880 single family attached Gowanus
Tract 77, Blockgroup 1 64.22 35.35 1839 1840 – 1980 single family attached Gowanus
Tract 100, Blockgroup 2 160.57 47.1 1839 1900 – 1930 two to four flats Sunset Park
Tract 134, Blockgroup 3 80.81 35.87 1880 1890 – 1910 single family attached Bay Ridge
Tract 139, Blockgroup 3 102.24 45.54 1839 1860 – 1870 single family attached Park Slope
Tract 145, Blockgroup 4 63.54 24.11 1839 1870 – 1900 apartments above retail Sunset Park
Tract 146, Blockgroup 1 30.30 12.19 1900 1920 – 1950 single family detached Dyker Heights
Tract 153, Blockgroup 2 93.66 46.15 1839 1860 – 1880 single family attached Park Slope
Tract 162, Blockgroup 2 62.46 35.5 1880 1870 – 1950 single family attached Bay Ridge
Tract 165, Blockgroup 2 115.57 57.5 1839 1870 – 1900 single family attached Park Slope
Tract 171, Blockgroup 3 51.72 23.85 1870 1900 – 1950 single family attached Windsor Terrace
Tract 181, Blockgroup 1 63.79 32.7 1839 1860 – 1890 single family attached Fort Greene
Tract 185.01, Blockgroup 1 180.57 62.95 1839 1870 – 1944 five story apartments Fort Greene
Tract 210, Blockgroup 1 87.55 36.61 1890 1900 – 1930 single family semi-detached Borough Park
Tract 213, Blockgroup 2 160.53 33.39 1860 1900 – 1950 five story apartments Crown Heights
Tract 218, Blockgroup 1 91.78 23.58 1890 1900 – 1930 apartments above retail Borough Park
Tract 224, Blockgroup 4 97.06 28.76 1839 1890 – 1910 single family attached Borough Park
Tract 226, Blockgroup 1 47.20 11.36 1890 1890 – 1930 industrial Borough Park
Tract 229, Blockgroup 4 87.57 43.44 1839 1870 – 1890 two to four flats Bedford-Stuyvesant
Tract 237, Blockgroup 2 32.31 10.29 1839 1870 – 1910 two to four flats Bedford-Stuyvesant
Tract 238, Blockgroup 1 98.78 32.89 1880 1880 – 1920 two to four flats Borough Park
Tract 243, Blockgroup 1 95.25 43.15 1839 1870 – 1890 two to four flats Bedford-Stuyvesant
Tract 274, Blockgroup 1 63.88 22.32 1900 1920 – 1940 single family detached Bensonhurst
Tract 277, Blockgroup 4 122.27 45.02 1839 1870 – 1960 two to four flats Bedford-Stuyvesant
Tract 291, Blockgroup 1 53.52 25.54 1839 1880 – 1900 two to four flats Bedford-Stuyvesant
Tract 297, Blockgroup 3 75.46 37.75 1839 1870 – 1920 two to four flats Bedford-Stuyvesant
Tract 335, Blockgroup 3 52.63 14.06 1890 1910 – 1930 single family detached Crown Heights
Tract 336, Blockgroup 2 45.53 17.19 1900 1920 – 1950 single family attached Sea Gate
Tract 359, Blockgroup 1 100.42 43.13 1890 1900 – 1930 two to four flats Crown Heights
Tract 396, Blockgroup 1 48.90 20.51 1900 1920 – 2000 single family detached Gravesend
Tract 399, Blockgroup 3 94.91 43.96 1840 1870 – 2000 two to four flats Bushwick
Tract 406, Blockgroup 2 82.98 34.47 1900 1920 – 1940 two to four flats Gravesend
Tract 419, Blockgroup 1 111.60 33.74 1840 1870 – 2000 two to four flats Bushwick
Tract 435, Blockgroup 1 106.72 27.48 1840 1870 – 2000 apartments above retail Bushwick
Tract 565, Blockgroup 1 104.38 46.09 1850 1870 – 1890 apartments above retail Greenpoint
Tract 573, Blockgroup 2 85.21 35.94 1850 1860 – 1890 two to four flats Greenpoint
Tract 598, Blockgroup 1 72.12 30.18 1900 1920 – 1930 single family attached Sheepshead Bay
Tract 600, Blockgroup 3 59.90 25.49 1890 1890 – 1920 single family detached Sheepshead Bay
Tract 612, Blockgroup 1 25.53 10.72 1908 1910 – 1940 single family detached Manhattan Beach
Tract 656, Blockgroup 2 52.57 17.56 1920 1920 – 1940 single family attached Marine Park
Tract 702.01, Blockgroup 5 37.23 15.21 1940 1940 – 1950 single family detached Mill Basin
Tract 728, Blockgroup 1 93.91 40.7 1900 1940 – 1960 single family attached Flatlands
Tract 742, Blockgroup 1 69.25 20.24 1900 1900 – 1930 single family semi-detached Flatlands
Tract 804, Blockgroup 2 121.55 49.79 1860 1880 – 1910 five story apartments Prospect-Lefferts Gardens
Tract 836, Blockgroup 2 40.90 14.19 1870 1900 – 1920 single family semi-detached East Flatbush
Tract 874.01, Blockgroup 1 71.75 33.45 1890 1870 – 1900 high-rise apartments East Flatbush
Tract 900, Blockgroup 3 91.75 31.94 1870 1890 – 1910 two to four flats Brownsville
Tract 942, Blockgroup 1 19.87 7.25 1930 1652 – 1955 single family attached East Flatbush
Tract 984, Blockgroup 1 71.91 23.54 1880 1950 – 1955 single family attached Canarsie
Tract 988, Blockgroup 2 92.00 30.03 1880 1870 – 1950 single family attached Canarsie
Tract 992, Blockgroup 1 52.64 18.35 1880 1860 – 1920 single family detached Canarsie
Tract 1142.01, Blockgroup 2 15.87 5.05 1850 1890 – 1940 single family detached Cypress Hills
Tract 1148, Blockgroup 1 45.77 14.6 1870 1880 – 1920 two to four flats Cypress Hills
Tract 1162, Blockgroup 3 61.16 20.78 1890 1890 – 1980 single family attached East New York
Tract 1184, Blockgroup 3 107.45 31.48 1870 1880 – 1920 single family attached Cypress Hills