1921 Census of England and Wales, General Report with Appendices, Table 5 : " Populations and Approximate Decennial Increase per cent. In England and Wales and in certain other Countries, 1891-1921".

Countries. Population. Approximate Decennial
Increase per cent.		 No. of persons
per sq.
kilometre in
1921.
1891. 1901. 1911. 1921. 1891-
1901.		 1901-
11.		 1911-
21.
United Kingdom 37,732,922 41,458,721 45,221,615 47,263,000‡ 9.9 9.1 4.5 152.7
England and Wales 29,002,525 32,527,843 36,070,492 37,886,699 12.2 10.9 4.9 250.6
Scotland 4,025,647 4,472,103 4,760,904 4,882,497 11.1 6.5 2.5 61.0
Ireland 4,704,750 4,458,775 4,390,219 — -5.2 -1.5 — —
Australian Commonwealth* 3,174,392 3,773,801 4,455,005 5,435,734 18.9 18.0 22.0 0.7
New Zealand** 668,651 815,862 1,058,312 1,271,664 22.0 29.7 20.2 4.8
Dominion of Canada† 4,833,239 5,371,315 7,206,643 8,788,483 11.1 33.6 21.9 0.9
Indian Empire 287,314,671 294,361,056 315,156,396 318,942,480 2.4 7.1 1.2 68.2
Ceylon 3,012,224 3,573,419 4,110,367 4,504,549 18.6 15.0 9.6 68.6
Union of South Africa (a) — 5,175,824 5,973,394 6,928,580 — 22.0 16.0 5.7
Denmark(b) 2,172,380 2,449,540 2,757,076 3,267,831 11.5 12.5 18.5 76.0
Norway (c) 2,000,917 2,239,880 2,391,782 2,649,775 11.9 6.8 10.8 8.2
Sweden (c) 4,784,981 5,136,441 5,522,403 5,904,489 7.3 7.5 6.9 13.2
German Empire (d):—                
  Pre-war boundaries 49,428,470 56,367,178 64,925,993 — 14.0 15.2 — —
  Post-war boundaries — — 58,450,343 59,852,204 — — 2.7 126.8
Austria (c):—                
  Pre-war boundaries 23,895,413 26,150,708 28,571,934 — 9.4 9.3 — —
  Post-war boundaries — — — 6,131,445 — — — —
Hungary (c):—                
  Pre-war boundaries 17,349,398 19,254,599 20,886,487 — 11.0 8.5 — —
  Post-war boundaries 6,009,238 6,850,132 7,606,971 7,980,143 14.0 11.0 4.9 85.9
The Netherlands (e) 4,511,415 5,104,137 5,858,175 6,865,314 13.1 14.8 15.6 200.7
Belgium (c):—                
  Pre-war boundaries 6,069,321 6,693,548 7,423,784 — 10.3 10.9 — —
  Post-war boundaries — 6,751,133 7,484,708 7,465,782 — 10.9 -0.2 245.2
France:—                
  Pre-war boundaries 38,343,192 38,961,945 39,604,992 — 1.6 1.6 — —
  Post-war boundaries 39,946,000 40,681,000 41,479,006 39,209,518 1.8 2.0 -5.5 71.2
Switzerland (f) 2,933,334 3,325,023 3,765,002 3,886,090 11.1 13.2 3.2 94.1
Italy                
  Pre-war boundaries — 32,475,253 34,671,377 37,385,285 — 6.5 7.5 130.4
  Post-war boundaries — — — 38,710,576 — — — 125.0
Spain (g) 17,565,632 18,618,086 19,995,686 21,389,842 4.6 7.4 7.0 42.3
Bulgaria (h) 3,310,713 3,744,283 4,337,513 4,846,971 16.4 15.8 11.7 47.2
Czecho-Slovakia — — — 13,613,172 — — — 97.0
Portugal (k) 5,049,729 5,423,132 5,960,056 6,032,991 7.4 9.0 1.4 65.6
Poland — — 23,629,427 27,192,674 — — 15.1 70.0
Roumania:—                
  Pre-war — — — 7,897,311 — — — 57.3
  Post-war — — — 16,262,177 — — — 55.3
Greece (l) — — — 5,603,389 — — — 37.9
Jugo Slavia — — — 12,017,323 — — — 48.3
United States (c) 62,947,714 75,994,575 91,972,266 105,710,620 20.7 21.3 15.4 13.5
Japan (exclusive of Korea and Formosa). 40,719,000 45,446,000 51,754,000 58,697,000 11.6 13.9 13.4 151.3

* Exclusive of full-blooded Aborigines.

** Exclusive of the Islands of the Cook group.

† De jure population.

‡ No census was taken in Ireland in 1921, and an estimate of the Irish population has been adopted in arriving at the United Kingdom figures for 1921.

(a) The figures relate to the censuses taken in the years 1904, 1911 and 1921.
(b)            "            "            "            "            "            1890, 1901, 1911 and 1921.
(c)            "            "            "            "            "            1890, 1900, 1910 and 1920.
(d)            "            "            "            "            "            1890, 1900, 1910 and 1919.
(e)            "            "            "            "            "            1889, 1899, 1909 and 1920.
(f)            "            "            "            "            "            1888, 1900, 1910 and 1920.
(g)            "            "            "            "            "            1887, 1900, 1910 and 1920.
(h)            "            "            "            "            "            1892, 1900, 1910 and 1920.
(k)            "            "            "            "            "            1890, 1900, 1911 and 1920.
(l)            "            "            "            "            "            1907 and 1920.