For much of the 20th century, a strip of territory administered by the United States ran through the center of Panama. Known as the Panama Canal Zone, it was in effect a “nation within a nation,” and its existence defined U.S.–Panama relations and Panamanian nationalism for generations.
Origins of the Zone
The Canal Zone was created by the Hay–Bunau-Varilla Treaty of 1903, signed shortly after Panama’s independence. The treaty granted the United States control over a strip of land, roughly the width of the Canal, along with the right to build and operate the waterway. The terms, which spoke of rights “in perpetuity,” were seen by many Panamanians as unjust from the start.
Life in the Zone
The Canal Zone was governed under U.S. administration and had its own towns, schools, police, courts, and infrastructure. American employees of the Canal and their families, known as “Zonians,” lived there, many for their entire lives. U.S. military bases were also stationed in the Zone, which served as a strategic center for the region.
Panamanians worked in the Zone in large numbers, but a divide existed. For decades a wage and privilege system distinguished U.S. citizens from local and Caribbean-descended workers, a source of lasting grievance.
Growing Tensions
The presence of foreign-administered territory bisecting the country fueled Panamanian nationalism. Sovereignty disputes flared repeatedly, symbolized by conflicts over which flags could fly in the Zone. In January 1964, clashes over the display of the Panamanian flag escalated into deadly riots, remembered as Martyrs’ Day, a defining moment in the push to reclaim the Zone.
The Path to Return
Pressure for change culminated in the Torrijos–Carter Treaties of 1977. The Panama Canal Treaty abolished the Canal Zone, returning that territory to Panamanian jurisdiction while providing for a gradual transfer of the Canal itself. Much of the Zone’s land and administration reverted to Panama in the years that followed.
The End of an Era
U.S. military bases were closed over time, and on December 31, 1999, Panama assumed full control of the Canal, ending nearly a century of U.S. presence. Former Zone lands and facilities were converted to Panamanian use, including residential neighborhoods, universities, nature reserves, and business districts.
Legacy
The legacy of the Canal Zone is complex. It brought infrastructure and a global waterway, but also decades of division over sovereignty. Its peaceful dissolution and the successful Panamanian operation of the Canal are today regarded as a triumph of national perseverance.
Continue with our guides to the Torrijos–Carter Treaties and the history of the Panama Canal.
