Number of acres in New York City 24,890 " " Manhattan Island 12,673 " " Tenth Ward 110 " " Eleventh Ward 196 " " Thirteenth Ward 107 Density of population per acre in 1880, New York City 48.4 Density of population per acre in 1880, Manhattan Island 92.6 Density of population per acre in 1880, Tenth Ward 432.3 Density of population per acre in 1880, Eleventh Ward 350.9 Density of population per acre in 1880, Thirteenth Ward 353.2 Density of population per acre in 1890, New York City (census) 60.08 Density of population per acre in 1890, Manhattan Island (census) 114.53 Density of population per acre in 1890, Tenth Ward (census) 522.00 Density of population per acre in 1890, Eleventh Ward (census) 386.00 Density of population per acre in 1890, Thirteenth Ward (census) 428.8 Density of population to the square mile in 1880, New York City (census) 30,976 Density of population to the square mile in 1880, Manhattan Island (census) 41,264 Density of population to the square mile in 1880, Tenth Ward (census) 276,672 Density of population to the square mile in 1880, Eleventh Ward (census) 224,576 Density of population to the square mile in 1880, Thirteenth Ward (census) 226,048 Density of population to the square mile in 1890, New York City (census) 38,451 Density of population to the square mile in 1890, Manhattan Island (census) 73,299 Density of population to the square mile in 1890, Tenth Ward (census) 334,080 Density of population to the square mile in 1890, Eleventh Ward (census) 246,040 Density of population to the square mile in 1890, Thirteenth Ward (census) 274,432 Number of persons to a dwelling in New York, 1880 (census) 16.37 Number of persons to a dwelling in London, 1881 (census) 7.9 Number of persons to a dwelling in Philadelphia, 1880 (census) 5.79 Number of persons to a dwelling in Brooklyn, 1880 (census) 9.11