Yes, Spanish is currently (2010) the second most commonly spoken language in the US, however the United States does not have any official languages.
Added note: Spanish is the fourth most spoken language in the world, With Hindi being third, English second & Mandarin first. http://www.krysstal.com/spoken.html
Added note: As of 2010[update], 329 to 358 million people speak Spanish as a native language and a total of 417 million people speak it worldwide. It is the second most natively spoken language in the world, after Mandarin Chinese.
Spanish is not the most commonly spoken language in the world. The most commonly spoken language is Mandarin Chinese, followed by English and then Spanish.
Spanish is the second most commonly spoken language in the United States.
Spanish is the most commonly spoken language in Central America, due to the region's history of Spanish colonization. It is the official language in all countries in Central America, with the exception of Belize where English is the official language.
Spanish is the most commonly spoken language in Latin America. Portuguese is also widely spoken in Brazil.
Spanish
French is the most commonly spoken language in Paris. However, due to its diverse population, you may also hear other languages such as English, Arabic, Spanish, and various African languages spoken in the city.
Alaska does not have an Official language. English is the most commonly spoken, language in Alaska. The next most commonly spoken languages are one of the 22 Native American languages; Spanish; and Tagalog, which is a language of the Philippines.
The most commonly spoken language in the UK is English.
The most widely spoken language in Latin America is Spanish. It is the official language of most countries in the region and is commonly used for communication in business, education, and daily life.
Spanish is the second most commonly spoken language in the United States, with a large population of Spanish speakers residing in the country.
While Spanish is widely spoken in the United States, it is not the primary language. English is the most commonly spoken language in the US, though Spanish is the second most common language and is spoken by a significant portion of the population.
Welsh is the most commonly spoken Celtic language, about 90% of the speakers live in Wales and England. Irish is the second commonly spoken.