Uzbekistan at a Glance

Area: 447,400 sq km (Spain 506K, Japan 378K)
Population: 26'600'000 [July 2005 est] (Canada 33M, Australia 21M)
Internet Penetration: 1,745,000 users / 6.6% [May/07 ITU]
Official language: Uzbek

Sources:
ITU
Wikipedia
Internet World Stats

Turkmenistan at a Glance

Area: 488'100 sq km (Spain 506K, Sweden 450K)
Population: 5'110'000 [Dec 2006 est] (Finland 5.3M, Ireland 4.2M)
Internet Penetration: 48,300 users / 0.7% [April/07 ITU]
Official language: Turkmen

Sources:
ITU
Wikipedia
Internet World Stats

Tajikistan at a Glance

Area: 143'100 sq km (UK 243K, Greece 132K)
Population: 6'740'000 [2006 est] (Switzerland 7.4M, Denmark 5.5M)
Internet Penetration: 19,500users / 0.3% [April/07 ITU]
Official language: Tajik

Sources:
ITU
Wikipedia
Internet World Stats

Kyrgyzstan at a Glance

Area: 199'900 sq km (UK 243K, Greece 132K)
Population: 5'300'000 [2005 est] (Denmark 5.5M, Finland 5.3M)
Internet Penetration: 280,000 users / 5.2% [Sept/06 ITU]
Official languages: Kyrgyz, Russian
Aliases: Kyrgyz Republic, Kirgizia, Kyrghyzstan, Kyrghyz Republic, Kirghizia.

Sources:
ITU
Wikipedia
Internet World Stats

Kazakhstan at a Glance

Area: 2'724'900 sq km (9th biggest, Argentina 2.8M Mexico 2.0M)
Population: 15'300'000 [2006 est] (Greece 11M, Netherlands 16M, Australia 21M)
Internet Penetration: 609,200 users / 4.2% [Aplil/07 ITU]
Official languages: Kazakh, Russian

Sources:
ITU
Wikipedia
Internet World Stats

Top Sites by Alexa.com

Here you can find current updated information about most popular web-sites in Central Asian countries. (At the moment there are stats only for Kazakhstan.)

Most popular web-sites in Kazakhstan
Most popular web-sites in Kyrgyzstan (no info yet)
Most popular web-sites in Tajikistan (no info yet)
Most popular web-sites in Turkmenistan (no info yet)
Most popular web-sites in Uzbekistan (no info yet)

The lists refer to the most popular sites among users in the country, not sites hosted in the country.

How have Alexa calculated the traffic? Answer here!

Central Asian Top Level Domains

For the starter, here are the TLD names of Central Asian countries:

Kazakhstan - .kz
Kyrgyzstan - .kg
Uzbekistan - .uz
Tajikistan - .tj
Turkmenistan - .tm