Rhestr o wledydd yn nhrefn eu dwysedd poblogaeth

Dyma restr o wledydd yn nhrefn eu dwysedd poblogaeth. Dim ond gwladwriaethau sofranaidd a thiriogaethau dibynnol sydd wedi eu cynnwys, felly mae'r ystadegau am wledydd Prydain (e.e. Cymru) wedi eu cynnwys yn rhai'r Deyrnas Unedig gan nad yw'r Cenhedloedd Unedig, ffynhonnell y wybodaeth, yn casglu ystadegau ar wahân.

 Trefn  Gwlad neu Rhanbarth  Poblogaeth  Arwynebedd (km²)  Dwysedd (Pob. y km²) —  Y Byd (ar dir yn unig)  6,464,750,000  134,682,000  48 1    35,253  1.49  23,660 2    460,162  26  17,699 3    7,040,885  1,099  6,407 4    4,483,900  699.4  6,208 5    27,921  6  4,654 6    783  0.44  1,780 7    401,630  316  1,271 8    64,174  53  1,211 9    329,198  298  1,105 10    726,617  694  1,047 11    141,822,300  143,998  985 12   Ynysoedd y Sianel (DU)  149,463  195  766 13    13,635  21  649 14   (Taiwan)  22,894,384  35,980  636 15    269,556  430  627 16    3,702,212  6,020  615 17    1,244,663  2,040  610 18   (Yr Iseldiroedd)  99,468  180  553 –   Mayotte (Ffrainc)  180,610  374  483 19    48,846,823  99,538  480 20    28,117  61  461 21   yr Unol Daleithiau (UDA)  3,954,584  8,875  446 22    10,441  26  402 23    16,299,170  41,528  392 24   Martinique (Ffrainc)  395,932  1,102  359 25    797,902  2,235  357 26    3,576,818  10,400  344 27    9,037,690  26,338  343 28    61,963  181  342 29    10,419,050  30,528  341 30    128,084,700  377,873  339 31    1,103,371,000  3,287,263  336 32    6,880,951  21,041  327 33   (UDA)  64,869  199  326 34   (UDA)  111,818  347  322 35    20,742,910  65,610  316 36   Réunion (France)  785,139  2,510  313 37   (UDA)  169,635  549  309 38    8,527,777  27,750  307 39    119,051  388  307 40    6,724,564  22,145  304 41    160,765  539  298 42    83,054,480  300,000  277 43    7,547,515  27,834  271 44   Guadeloupe (Ffrainc)  448,484  1,705  263 45    102,924  344  260 46    1,305,236  5,130  254 47    84,238,230  331,689  254 48    59,667,840  242,900  246 49    2,650,713  10,991  241 50    82,689,210  357,022  232 51   (Yr Iseldiroedd) || 182,656 || 800 || 228
|-
| 52 ||  || 34,521 || 160 || 216
|-
| 53 ||  || 157,935,100 || 796,095 || 198
|-
| 54 ||  || 58,092,740 || 301,318 || 193
|-
| 55 ||  || 22,487,660 || 120,538 || 187
|-
| 56 ||  || 27,132,630 || 147,181 || 184
|-
| 57 ||  || 81,479 || 442 || 184
|-
| 58 ||  || 8,894,907 || 48,671 || 183
|-
| 59 ||  || 464,904 || 2,586 || 180
|-
| 60 ||  || 80,654 || 455 || 177
|-
| 61 ||  || 7,252,331 || 41,284 || 176
|-
| 62 ||  (UDA) || 80,801 || 464 || 174
|-
| 63 ||  (DU) || 45,017 || 264 || 171
|-
| 64 ||  || 42,696 || 261 || 164
|-
| 65 ||  || 156,523 || 964 || 162
|-
| 66 ||  || 110,487 || 702 || 157
|-
| 67 ||  || 2,686,873 || 17,818 || 151
|-
| 68 ||   (DU) || 22,016 || 151 || 146
|-
| 69 ||  || 67,151 || 468 || 143
|-
| 70 ||  || 131,529,700 || 923,768 || 142
|-
| 71 ||  || 1,315,844,000 || 9,596,961 || 137
|-
| 72 ||  || 102,311 || 747 || 137
|-
| 73 ||  || 99,350 || 726 || 137
|-
| 74 ||  || 1,517,079 || 11,295 || 134
|-
| 75 ||  (DU) || 12,205 || 91 || 134
|-
| 76 ||  (DU) || 76,538 || 572 || 134
|-
| 77 ||  || 10,219,600 || 78,866 || 130
|-
| 78 ||  || 5,430,590 || 43,094 || 126
|-
| 79 ||  || 506,807 || 4,033 || 126
|-
| 80 ||  || 64,232,760 || 513,115 || 125
|-
| 81 ||  || 4,205,747 || 33,851 || 124
|-
| 82 ||  || 38,529,560 || 312,685 || 123
|-
| 83 ||  || 28,816,230 || 241,038 || 120
|-
| 84 ||  || 222,781,500 || 1,904,569 || 117
|-
| 85 ||  || 12,599,060 || 108,889 || 116
|-
| 86 ||  Tocelaw (Seland Newydd) || 1,378 || 12 || 115
|-
| 87 ||  || 10,494,500 || 91,982 || 114
|-
| 88 ||  || 5,400,908 || 49,033 || 110
|-
| 89 ||  Ffrainc || 60,495,540 || 551,500 || 110
|-
| 90 ||  || 3,129,678 || 28,748 || 109
|-
| 91 ||  || 12,883,940 || 118,484 || 109
|-
| 92 ||  || 10,097,730 || 93,032 || 109
|-
| 93 ||  || 6,145,004 || 56,785 || 108
|-
| 94 ||  || 9,396,411 || 88,361 || 106
|-
| 95 ||  || 78,940 || 751 || 105
|-
| 96 ||  || 19,043,380 || 185,180 || 103
|-
| 97 ||  || 11,269,400 || 110,861 || 102
|-
| 98 ||  || 3,016,312 || 29,800 || 101
|-
| 99 ||  || 8,189,444 || 83,858 || 98
|-
| 100 ||  || 8,410,801 || 86,600 || 97
|-
| 101 ||  || 1,966,814 || 20,256 || 97
|-
| 102 ||  || 73,192,840 || 783,562 || 93
|-
| 103 ||  || 22,112,810 || 238,533 || 93
|-
| 104 ||  || 21,711,470 || 238,391 || 91
|-
| 105 ||  || 835,307 || 9,251 || 90
|-
| 106 ||  || 43,064,190 || 505,992 || 85
|-
| 107 ||  || 4,327,228 || 51,100 || 85
|-
| 108 ||  || 11,119,890 || 131,957 || 84
|-
| 109 ||  || 4,551,338 || 56,538 || 81
|-
| 110 ||  || 2,034,060 || 25,713 || 79
|-
| 111 ||  || 14,071,010 || 181,035 || 78
|-
| 112 ||  Wallis a Futuna (Ffrainc) || 15,480 || 200 || 77
|-
| 113 ||  || 5,525,478 || 71,740 || 77
|-
| 114 ||  || 46,480,700 || 603,700 || 77
|-
| 115 ||  || 25,347,370 || 329,847 || 77
|-
| 116 ||  || 3,907,074 || 51,197 || 76
|-
| 117 ||  (Seland Newydd) || 17,954 || 236 || 76
|-
| 118 ||  || 8,438,853 || 112,622 || 75
|-
| 119 ||  || 50,519,490 || 676,578 || 75
|-
| 120 ||  || 74,032,880 || 1,001,449 || 74
|-
| 121 ||  || 812,842 || 11,000 || 74
|-
| 122 ||  || 31,478,460 || 446,550 || 70
|-
| 123 ||  || 77,430,700 || 1,104,300 || 70
|-
| 124 ||  || 7,725,965 || 110,912 || 70
|-
| 125 ||  || 28,807,190 || 438,317 || 66
|-
| 126 ||  || 184,984 || 2,831 || 65
|-
| 127 ||  || 373,819 || 5,765 || 65
|-
| 128 ||  || 7,204,723 || 112,088 || 64
|-
| 129 ||  || 4,474,404 || 69,700 || 64
|-
| 130 ||  (Ffrainc)  256,603  4,000  64 131    5,702,776  89,342  64 132    947,064  14,874  64 132   (DU)  26,288  417  63 134    10,102,470  163,610  62 135    1,032,438  17,364  59 136    26,593,120  447,400  59 137    11,658,170  196,722  59 138    1,794,769  30,355  59 139    4,147,901  70,273  59 140    34,255,720  580,367  59 141    18,153,870  322,463  56 142    107,029,400  1,958,201  55 143    4,495,823  83,600  54 144    3,431,033  65,300  53 145    13,227,840  274,000  48 146    9,755,106  207,600  47 147   Ecwador  13,228,420  283,561  47 148    847,706  18,274  46 149    2,162,546  47,000  46 150    29,863,010  652,090  46 151    6,506,980  143,100  45 152    630,548  14,026  45 153   (DU)  4,488  102  44 154    1,586,344  36,125  44 155    19,949  459  43 156    3,231,502  75,517  43 157    5,486,685  130,000  42 158    69,515,210  1,648,195  42 159    38,328,810  945,087  41 160   (DU)  4,918  122  40 161    45,600,240  1,138,914  40 162    20,974,660  527,968  40 163    47,431,830  1,221,037  39 164    9,402,098  245,857  38 165    4,401,357  117,600  37 166    2,306,988  64,600  36 167    16,321,860  475,442  34 168    793,078  23,200  34 169   (Denmarc)  47,017  1,399  34 170    13,009,530  390,757  33 171    18,605,920  587,041  32 172    298,212,900  9,629,091  31 173    1,329,697  45,100  29 174    3,283,267  111,369  29 175    26,749,110  912,050  29 176    5,263,794  199,900  26 177    5,924,145  236,800  25 178    19,792,300  801,590  25 179    57,548,740  2,344,858  25 180   || 5,769 || 242 || 24
|-
| 181 ||  || 323,063 || 13,878 || 23
|-
| 182 ||  || 186,404,900 || 8,514,877 || 22
|-
| 183 ||  || 27,968,240 || 1,285,216 || 22
|-
| 184 ||  || 16,295,100 || 756,096 || 22
|-
| 185 ||  || 9,041,262 || 449,964 || 20.0
|-
| 186 ||  || 3,463,197 || 175,016 || 19.8
|-
| 187 ||  || 503,519 || 28,051 || 18.0
|-
| 188 ||  || 211,367 || 12,189 || 17.3
|-
| 189 ||  || 477,742 || 28,896 || 16.5
|-
| 190 ||  || 5,249,060 || 338,145 || 15.5
|-
| 191 ||  || 11,668,460 || 752,618 || 15.5
|-
| 192 ||  || 6,158,259 || 406,752 || 15.1
|-
| 193 ||  || 4,028,384 || 270,534 || 14.9
|-
| 194 ||  || 36,232,950 || 2,505,813 || 14.5
|-
| 195 ||  || 38,747,150 || 2,780,400 || 13.9
|-
| 196 ||  || 32,853,800 || 2,381,741 || 13.8
|-
| 197 ||  (DU) || 67 || 5 || 13.4
|-
| 198 ||  || 8,227,826 || 637,657 || 12.9
|-
| 199 ||  || 15,941,390 || 1,246,700 || 12.8
|-
| 200 ||  Caledonia Newydd (Ffrainc) || 236,838 || 18,575 || 12.8
|-
| 201 ||  || 5,887,138 || 462,840 || 12.7
|-
| 202 ||  || 4,620,275 || 385,155 || 12.0
|-
| 203 ||  || 269,736 || 22,966 || 11.7
|-
| 204 ||  || 3,998,904 || 342,000 || 11.7
|-
| 205 ||  || 24,573,100 || 2,149,690 || 11.4
|-
| 206 ||  || 13,956,980 || 1,267,000 || 11.0
|-
| 207 ||  || 13,518,420 || 1,240,192 || 10.9
|-
| 208 ||  || 4,833,266 || 488,100 || 9.9
|-
| 209 ||  || 143,201,600 || 17,098,242 || 8.4
|-
| 210 ||  || 9,182,015 || 1,098,581 || 8.4
|-
| 211 ||  || 2,566,981 || 309,500 || 8.3
|-
| 212 ||  || 9,748,931 || 1,284,000 || 7.6
|-
| 213 ||  || 4,037,747 || 622,984 || 6.5
|-
| 214 ||  (Seland Newydd) || 1,445 || 260 || 5.6
|-
| 215 ||  || 14,825,110 || 2,724,900 || 5.4
|-
| 216 ||  || 1,383,841 || 267,668 || 5.2
|-
| 217 ||  || 751,218 || 214,969 || 3.5
|-
| 218 ||  || 5,853,452 || 1,759,540 || 3.3
|-
| 219 ||  || 32,268,240 || 9,970,610 || 3.2
|-
| 220 ||  || 1,764,926 || 581,730 || 3.0
|-
| 221 ||  || 3,068,742 || 1,025,520 || 3.0
|-
| 222 ||  || 294,561 || 103,000 || 2.9
|-
| 223 ||  || 449,238 || 163,820 || 2.7
|-
| 224 ||  || 20,155,130 || 7,741,220 || 2.6
|-
| 225 ||  || 2,031,252 || 824,292 || 2.5
|-
| 226 ||  Guyane (Ffrainc)''  187,056  90,000  2.1 227    2,646,487  1,564,116  1.7 228    341,421  266,000  1.3 229   (DU)  3,060  12,173  0.25 230   (Denmarc)  56,916  2,175,600  0.026

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