# (pop)

COUNTRY . C

1. (1,394 m)

China . I

2. (1,344 m)

India . U...

3. (328 m)

United States . I

4. (268 m)

Indonesia . B

5. (209 m)

Brazil . P

6. (203 m)

Pakistan . N

7. (199 m)

Nigeria . B

8. (166 m)

Bangladesh . R

9. (146 m)

Russia . M

10. (126 m)

Mexico . J

11. (126 m)

Japan . P

12. (107 m)

Philippines . E

13. (98 m)

Ethiopia . E

14. (98 m)

Egypt . V

15. (95 m)

Vietnam . D...

16. (91 m)

Democratic Republic of the Congo . G

17. (82 m)

Germany . I

18. (82 m)

Iran . T

19. (82 m)

Turkey . F

20. (66 m)

France . T

21. (66 m)

Thailand . U...

22. (66 m)

United Kingdom . I

23. (60 m)

Italy . S...

24. (57 m)

South Africa . T

25. (55 m)

Tanzania . M

26. (54 m)

Myanmar . S...

27. (51 m)

South Korea . K

28. (49 m)

Kenya . S

29. (46 m)

Spain . C

30. (45 m)

Colombia . A

31. (44 m)

Argentina . A

32. (43 m)

Algeria . U

33. (42 m)

Ukraine . S

34. (41 m)

Sudan . U

35. (40 m)

Uganda . I

36. (39 m)

Iraq . P

37. (38 m)

Poland . C

38. (37 m)

Canada . M

39. (34 m)

Morocco . S...

40. (33 m)

Saudi Arabia . U

41. (33 m)

Uzbekistan . M

42. (32 m)

Malaysia . P

43. (32 m)

Peru . V

44. (32 m)

Venezuela . A

45. (31 m)

Afghanistan . G

46. (30 m)

Ghana . A

47. (30 m)

Angola . N

48. (29 m)

Nepal . Y

49. (29 m)

Yemen . M


# (pop)

COUNTRY

50. (28 m)

Mozambique . I...

51. (25 m)

Ivory Coast . N...

52. (25 m)

North Korea . A

53. (25 m)

Australia . M

54. (25 m)

Madagascar . C

55. (24 m)

Cameroon . T

56. (23 m)

Taiwan . N

57. (22 m)

Niger . S...

58. (21 m)

Sri Lanka . B...

59. (20 m)

Burkina Faso . M

60. (19 m)

Mali . R

61. (19 m)

Romania . C

62. (19 m)

Chile . S

63. (18 m)

Syria . K

64. (18 m)

Kazakhstan . G

65. (17 m)

Guatemala . M

66. (17 m)

Malawi . Z

67. (17 m)

Zambia . N

68. (17 m)

Netherlands . E

69. (17 m)

Ecuador . C

70. (16 m)

Cambodia . S

71. (16 m)

Senegal . C

72. (15 m)

Chad . S

73. (15 m)

Somalia . Z

74. (15 m)

Zimbabwe . S...

75. (12 m)

South Sudan . R

76. (12 m)

Rwanda . G

77. (12 m)

Guinea . B

78. (11 m)

Benin . H

79. (11 m)

Haiti . B

80. (11 m)

Bolivia . B

81. (11 m)

Belgium . T

82. (11 m)

Tunisia . C

83. (11 m)

Cuba . B

84. (10 m)

Burundi . G

85. (10 m)

Greece . C...

86. (10 m)

Czech Republic . J

87. (10 m)

Jordan . D...

88. (10 m)

Dominican Republic . P

89. (10 m)

Portugal . S

90. (10 m)

Sweden . A

91. (9,981 k)

Azerbaijan . H

92. (9,771 k)

Hungary . U...

93. (9,682 k)

United Arab Emirates . B

94. (9,475 k)

Belarus . H

95. (9,158 k)

Honduras . I

96. (9,002 k)

Israel . T

97. (8,931 k)

Tajikistan . A

98. (8,859 k)

Austria . P...


# (pop)

COUNTRY

99. (8,558 k)

Papua New Guinea . S

100. (8,526 k)

Switzerland . S...

101. (7,901 k)

Sierra Leone . T

102. (7,538 k)

Togo . P

103. (7,152 k)

Paraguay . L

104. (7,123 k)

Laos . B

105. (7,050 k)

Bulgaria . S

106. (7,001 k)

Serbia . E...

107. (6,704 k)

El Salvador . L

108. (6,569 k)

Libya . N

109. (6,393 k)

Nicaragua . K

110. (6,350 k)

Kyrgyzstan . E

111. (6,160 k)

Eritrea . L

112. (6,065 k)

Lebanon . D

113. (5,806 k)

Denmark . S

114. (5,638 k)

Singapore . T

115. (5,631 k)

Turkmenistan . F

116. (5,521 k)

Finland . C...

117. (5,496 k)

Central African Republic . S

118. (5,445 k)

Slovakia . N

119. (5,328 k)

Norway . R...

120. (5,128 k)

Republic of the Congo . C...

121. (5,058 k)

Costa Rica . N...

122. (4,945 k)

New Zealand . I

123. (4,857 k)

Ireland . O

124. (4,670 k)

Oman . L

125. (4,475 k)

Liberia . K

126. (4,226 k)

Kuwait . P

127. (4,218 k)

Panama . C

128. (4,105 k)

Croatia . M

129. (4,077 k)

Mauritania . G

130. (3,729 k)

Georgia . M

131. (3,547 k)

Moldova . U

132. (3,518 k)

Uruguay . B...

133. (3,511 k)

Bosnia and Herzegovina . M

134. (3,247 k)

Mongolia . A

135. (2,969 k)

Armenia . A

136. (2,870 k)

Albania . L

137. (2,792 k)

Lithuania . Q

138. (2,772 k)

Qatar . J

139. (2,728 k)

Jamaica . N

140. (2,458 k)

Namibia . B

141. (2,338 k)

Botswana . G

142. (2,228 k)

Gambia . G

143. (2,109 k)

Gabon . S

144. (2,076 k)

Slovenia . N...

145. (2,075 k)

North Macedonia . L

146. (2,007 k)

Lesotho . L

147. (1,918 k)

Latvia . K


# (pop)

COUNTRY

148. (1,798 k)

Kosovo . G...

149. (1,604 k)

GuineaBissau . B

150. (1,543 k)

Bahrain . E...

151. (1,387 k)

East Timor . T...

152. (1,359 k)

Trinidad and Tobago . E...

153. (1,358 k)

Equatorial Guinea . E

154. (1,323 k)

Estonia . M

155. (1,265 k)

Mauritius . E

156. (1,093 k)

Eswatini . D

157. (1,078 k)

Djibouti . F

158. (884 k)

Fiji . C

159. (873 k)

Comoros . C

160. (864 k)

Cyprus . G

161. (786 k)

Guyana . B

162. (741 k)

Bhutan . S...

163. (680 k)

Solomon Islands . M

164. (622 k)

Montenegro . L

165. (602 k)

Luxembourg . S

166. (573 k)

Suriname . C...

167. (550 k)

Cape Verde . M

168. (475 k)

Malta . B

169. (421 k)

Brunei . B

170. (398 k)

Belize . B

171. (385 k)

Bahamas . M

172. (378 k)

Maldives . I

173. (357 k)

Iceland . V

174. (304 k)

Vanuatu . B

175. (287 k)

Barbados . S...

176. (201 k)

São Tomé and Príncipe . S

177. (200 k)

Samoa . S...

178. (180 k)

Saint Lucia . K

179. (120 k)

Kiribati . S...

180. (109 k)

Saint Vincent and the Grenadines . G

181. (108 k)

Grenada . F...

182. (105 k)

Federated States of Micronesia . A...

183. (104 k)

Antigua and Barbuda . T

184. (100 k)

Tonga . S

185. (96 k)

Seychelles . A

186. (74 k)

Andorra . D

187. (74 k)

Dominica . S...

188. (56 k)

Saint Kitts and Nevis . M...

189. (55 k)

Marshall Islands . M

190. (38 k)

Monaco . L

191. (38 k)

Liechtenstein . S...

192. (33 k)

San Marino . P

193. (17 k)

Palau . N

194. (11 k)

Nauru . T

195. (10 k)

Tuvalu . V...

196. (800)

Vatican City


That way if you get stuck going down, you can start at Vatican city and work up (or you can work your way back from a country that you do know the population of).
Needs some updating, and maybe some more time...