What is cdmx
Last updated: April 1, 2026
Key Facts
- CDMX is the abbreviation for Ciudad de México in Spanish
- It is the capital and most populous city in Mexico with over 8 million residents
- Founded by the Aztec civilization in 1325, making it one of the oldest capital cities
- Located at an elevation of approximately 2,250 meters (7,382 feet) above sea level
- One of the largest metropolitan areas in the world with over 21 million people in the metropolitan region
Overview
CDMX is the abbreviation for Ciudad de México, which translates to Mexico City in English. As the capital of Mexico, CDMX is the country's political, economic, and cultural center. The city stands on an ancient Aztec site and is one of the world's most historically significant urban centers.
Historical Significance
The history of CDMX dates back to 1325 when the Aztec civilization established Tenochtitlan on an island in Lake Texcoco. The city grew into one of the largest cities in the pre-Columbian Americas. When Spanish conquistadors arrived in 1519, they were astounded by its size and development. The Spanish subsequently built Mexico City on top of the ruins of Tenochtitlan, and it became the capital of New Spain.
Geography and Climate
CDMX is situated in the Valley of Mexico at an elevation of approximately 2,250 meters above sea level, making it one of the world's highest capital cities. This elevation affects the climate, which is temperate year-round with mild temperatures and distinct rainy and dry seasons. The city's geographical setting in a valley surrounded by mountains has historically posed challenges for air quality and drainage.
Economy and Culture
As Mexico's capital, CDMX is the nation's economic hub, home to major corporations, financial institutions, and government offices. The city is renowned for its rich cultural heritage, world-class museums including the Museum of Anthropology and the Frida Kahlo Museum, historic architecture, and vibrant arts scene. UNESCO has designated the Historic Center of Mexico City as a World Heritage Site.
Modern CDMX
Today, CDMX is a megacity facing challenges common to large urban centers including traffic congestion, air pollution, and housing shortages, but it continues to be a major tourist destination and center of innovation. The city hosts major international events, maintains a robust public transportation system including the Metro, and serves as a gateway to exploring Mexican culture and history.
Related Questions
What was the original name of Mexico City?
The original name was Tenochtitlan, the Aztec city built on an island in Lake Texcoco in 1325. Spanish conquistadors renamed it Mexico City after conquering it in 1519.
Why is CDMX at such high altitude?
CDMX is located in the Valley of Mexico, a high-altitude basin in central Mexico at approximately 2,250 meters elevation. The Aztecs originally chose this location for its defensible island position in Lake Texcoco.
What is the population of CDMX?
The city proper has over 8 million residents, while the metropolitan area has more than 21 million people, making it one of the world's largest metropolitan areas.
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Sources
- Wikipedia - Mexico CityCC-BY-SA-4.0
- Mexico City Government Official SitePublic Domain