This resource from the CIA provides up to date information on many countries, including information on Geography, People, Government, Economy, Communciations, Transportation, Military, and Transnational Issues. Maps are also available.
Excellent language data provided by U.S. English Foundation Research. The site offers a variety of reports which show the number of languages spoken in US. Site users can sort data by language spoken (see Languages of the USA report under Nationwide Facts heading). Site users can also get specific language data for a state, county, etc.
The MLA Language Map is intended for use by students, teachers, and anyone interested in learning about the linguistic and cultural composition of the United States. The MLA Language Map uses data from the 2000 United States census to display the locations and numbers of speakers of thirty languages and seven groups of less commonly spoken languages in the United States. The Language Map illustrates the density of language speakers in zip codes and counties. The Data Center provides actual numbers and percentages of speakers.