Table:
Districts | UBIGEO | Area / (km²) | Population | Population density / (/km²) | Created | Postal / code
Ancón | 150102 | 299.22 | 29,419 | 98.3 | 29 October 1874 | 2
Ate | 150103 | 77.72 | 419,663 | 5,399.7 | 2 January 1857 | 3
Barranco | 150104 | 3.33 | 45,922 | 13,790.4 | 26 October 1874 | 4
Breña | 150105 | 3.22 | 94,808 | 29,443.5 | 15 July 1949 | 5
Carabayllo | 150106 | 346.88 | 188,764 | 544.2 | 4 August 1821 | 6
Chaclacayo | 150107 | 39.5 | 39,686 | 1,004.7 | 24 April 1940 | 8
Chorrillos | 150108 | 38.94 | 262,595 | 6,743.6 | 2 January 1857 | 9
Cieneguilla | 150109 | 240.33 | 15,784 | 65.7 | 3 March 1970 | 40
Comas | 150110 | 48.75 | 464,745 | 9,533.2 | 12 December 1961 | 7
El Agustino | 150111 | 12.54 | 165,425 | 13,191.8 | 6 January 1965 | 10
Independencia | 150112 | 14.56 | 197,308 | 13,551.4 | 16 March 1964 | 28
Jesús María | 150113 | 4.57 | 58,588 | 12,820.1 | 13 December 1963 | 11
La Molina | 150114 | 65.75 | 124,468 | 1,893.0 | 6 February 1962 | 12
La Victoria | 150115 | 8.74 | 190,218 | 21,764.1 | 16 August 1921 | 13
Lima | 150101 | 21.88 | 278,804 | 13,187.2 | 2 January 1857 | 1
Lince | 150116 | 3.03 | 52,123 | 17,202.3 | 20 May 1936 | 14
Los Olivos | 150117 | 18.25 | 286,549 | 15,701.3 | 7 April 1989 | 39
Lurigancho | 150118 | 236.47 | 90,594 | 383.1 | 2 January 1857 | 15
Lurín | 150119 | 181.12 | 55,953 | 308.9 | 2 January 1857 | 16
Magdalena del Mar | 150120 | 3.61 | 48,445 | 13,419.7 | 10 May 1920 | 17
Miraflores | 150122 | 9.62 | 92,815 | 9,648.1 | 2 January 1857 | 18
Pachacamac | 150123 | 160.23 | 54,763 | 341.8 | 2 January 1857 | 19
Pucusana | 150124 | 37.83 | 9,231 | 244.0 | 22 January 1943 | 20
Pueblo Libre | 150121 | 4.38 | 71,892 | 16,413.7 | 2 January 1857 | 21
Puente Piedra | 150125 | 71.18 | 203,473 | 2,858.6 | 14 February 1927 | 22
Punta Hermosa | 150126 | 119.5 | 4,676 | 39.1 | 7 April 1954 | 24
Punta Negra | 150127 | 130.5 | 4,473 | 34.3 | 7 April 1954 | 23
Rímac | 150128 | 11.87 | 175,793 | 14,809.9 | 16 August 1921 | 25
San Bartolo | 150129 | 45.01 | 5,733 | 127.4 | 5 May 1946 | 26
San Borja | 150130 | 9.96 | 102,762 | 10,317.5 | 1 June 1983 | 41
San Isidro | 150131 | 11.1 | 55,309 | 6,165.6 | 24 April 1931 | 27
San Juan de Lurigancho | 150132 | 131.25 | 812,656 | 6,191.7 | 13 January 1967 | 36
San Juan de Miraflores | 150133 | 23.98 | 335,237 | 13,979.9 | 12 January 1965 | 29
San Luis | 150134 | 3.49 | 46,258 | 13,254.4 | 30 May 1968 | 30
San Martín de Porres | 150135 | 36.91 | 525,155 | 14,228.0 | 22 May 1950 | 31
San Miguel | 150136 | 10.72 | 124,904 | 11,651.5 | 10 May 1920 | 32
Santa Anita | 150137 | 10.69 | 160,777 | 15,039.9 | 26 October 1989 | 43
Santa María del Mar District | 150138 | 9.81 | 88 | 9.0 | 16 January 1962 | 37
Santa Rosa | 150139 | 21.5 | 9,379 | 436.2 | 7 February 1962 | 38
Santiago de Surco | 150140 | 34.75 | 272,690 | 7,847.2 | 16 December 1929 | 33
Surquillo | 150141 | 3.46 | 84,202 | 24,335.8 | 15 July 1949 | 34
Villa El Salvador | 150142 | 35.46 | 367,436 | 10,362.0 | 1 June 1983 | 42
Villa María del Triunfo | 150143 | 70.57 | 355,761 | 5,041.2 | 28 December 1961 | 35

Question: what is the total number of districts of lima?
Answer: 43

Question: what was the last district created?
Answer: Santa Anita

Question: which district in this city has the greatest population?
Answer: San Juan de Lurigancho

Question: what is the total number of districts created in the 1900's?
Answer: 32

Question: how many districts have more than 100,000 people in this city?
Answer: 21

Question: which is the largest district in terms of population?
Answer: San Juan de Lurigancho

Question: how many districts are there in this city?
Answer: 43

Question: what district has the least amount of population?
Answer: Santa María del Mar District

Question: how many districts have a population density of at lest 1000.0?
Answer: 31