On July 4, 2026, the United States turns 250. (Photo: AI-Generated) USA 250th Anniversary Independence Day Celebrations LIVE Updates:  The United States marks 250 years since the signing of the Declaration of Independence on July 4, with celebrations planned across the country under the banner “America’s Block Party.” Seven official host cities  Boston, Philadelphia, New York, Los Angeles, Milwaukee, Fort Campbell in Kentucky, and Charleston  will lead the festivities, while more than 1,200 local events are scheduled nationwide, according to America250, the nonpartisan body organizing the celebrations. Follow this live blog for updates on events, history and star appearances as the country marks its semiquincentennial. What does America 250 actually mark:  July 4, 2026 marks the 250th anniversary of the day the Continental Congress adopted the Declaration of Independence in Philadelphia, formally announcing the 13 American colonies’ break from British rule. Independence Hall in Philadelphia, where the document was adopted, remains central to this year’s celebrations, alongside sites tied to the Revolutionary War such as Fort Ticonderoga and Saratoga in New York, and Thomas Jefferson’s …