Just based on geography, I would have thought so as well, but it turns out that the countries decreases population as north to south, so no country in Central America is more populous than all of its neighbors.
I think Uzbekistan is now larger than Afghanistan and should be on the list now. According to Wikipedia 32 million in Uzbekistan and 28 million in Afghanistan. Other bordering countries
Haiti is now in both this one and the less populated one http://www.jetpunk.com/user-quizzes/139806/countries-that-are-less-populated-than-their-neighbors
The answer is, "Maybe." Different sources claim different populations for the two nations. Ostensibly, the source of this is Wikipedia in which case Uzbekistan is listed as having the slightly higher population.
What are we using as the source? Wikipedia on the individual countries page and List of countries and dependencies by population still shows Uzbekistan as having 500K more people.
We now use Worldometers for our country population. Added a note. The population of Afghanistan is growing rapidly due to one of the highest birth rates in the world.
Panama
Costa Rica
Nicaragua
Honduras
Guatemala
Mexico
(Belize and El Salvador are overtaken by their respective neighbors, Guatemala and Honduars / Guatemala and Mexico)
Thanks, everyone!
South Korea and DR Congo
Turkmenistan: 5M
Tajikistan: 9M
Kyrgyzstan: 6M
Kazakhstan: 18M