Population of Middlesex (1801–81) Population of Middlesex (1801–1881) Population of Middlesex (1801–1881)

| Year_ | Edmonton_Hundred | Elthorne_Hundred | Gore_Hundred | Isleworth_Hundred | Ossulstone_Hundred_Holborn_Division | Ossulstone_Hundred_Finsbury_Division | Ossulstone_Hundred_Kensington_Division | Ossulstone_Hundred_Tower_Division | Spelthorne_Hundred | London_City_Within_the_Walls | London_City_Without_the_Walls | Inns_of_Court_and_Chancery | Westminster_City_and_Liberty | Total_ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1801 | 16885 | 16853 | 6968 | 9266 | 171202 | 73268 | 40642 | 215382 | 12743 | 63832 | 70676 | 1907 | 157890 | 818129 |
| 1811 | 20577 | 19929 | 8738 | 10669 | 214946 | 92538 | 54550 | 272966 | 14409 | 55484 | 70489 | 1796 | 166438 | 953774 |
| 1821 | 24771 | 23479 | 9806 | 12285 | 272131 | 119802 | 70808 | 339075 | 16966 | 56174 | 74765 | 1546 | 186584 | 1144531 |
| 1831 | 26930 | 26976 | 11315 | 13568 | 341981 | 151409 | 87961 | 427090 | 19204 | 55778 | 73442 | 1271 | 206116 | 1358130 |
| 1841 | 30683 | 34943 | 12487 | 15893 | 399218 | 185174 | 122795 | 513501 | 21298 | 54626 | 74758 | 1708 | 226241 | 1574416 |
| 1851 | 32109 | 35828 | 12956 | 18463 | 480942 | 239788 | 169317 | 641918 | 22107 | 54702 | 79096 | 1398 | 241450 | 1886576 |