Atacama Region
The Atacama Region, officially the III Region of Atacama, is one of Chile's 16 administrative regions, located in the northern part of the country between latitudes 25°17' S and 29°30' S, encompassing an arid desert landscape that forms part of the world's driest non-polar desert.[1][2] It spans 75,176 km²—approximately 9.9% of Chile's national territory—with borders shared with the Antofagasta Region to the north, the Coquimbo Region to the south, Argentina to the east, and the Pacific Ocean to the west, featuring about 355 km of coastline.[3][2] The region is divided into three provinces—Copiapó, Chañaral, and Huasco—and nine communes, with Copiapó serving as the regional capital and largest city, home to over 50% of the population.[1][3] Geographically, the Atacama Region is characterized by extreme aridity due to the influence of the Humboldt Current and the Pacific South Anticyclone, resulting in an average annual precipitation of just 36 mm and a desert cold climate with temperature extremes ranging from 24.1°C in summer to 3.6°C in winter.[2] Its diverse terrain includes coastal plains, fertile valleys like those of the Copiapó and Huasco rivers supporting limited agriculture, and high Andean plateaus dominated by the Ojos del Salado, the world's highest active volcano at 6,893 meters.[3][4] Notable natural features encompass several national parks, including recently established ones such as Pan de Azúcar, Llanos de Challe, Salar de Gorbea, and Salar de Las Parinas, home to unique biodiversity including Humboldt penguins, guanacos, and occasional desert blooms after rare heavy rains.[1][4][5] As of the 2024 census, the region's population stands at 299,180, with a density of about 4.0 inhabitants per km², 91% urbanized and concentrated in Copiapó and Vallenar, reflecting a 4.5% increase from the 2017 figure of 286,168.[1][3] Historically, the area has been inhabited since pre-Columbian times by indigenous groups including the Diaguitas, Changos, and Incas, who practiced transhumant pastoralism and small-scale agriculture adapted to the harsh environment.[3][4] Spanish colonization in the 16th century introduced mining, with the 1832 discovery of silver at Chañarcillo sparking a boom that transformed the economy; the region was formally established as a province in 1843 and reorganized into its current structure in 1974.[1][4] Economically, mining remains the cornerstone, contributing 33–43% to the regional GDP and 91.3% of exports in 2023, primarily copper (e.g., from mines like Candelaria and El Salvador), iron, gold, and silver, with a 2023 GDP growth of 2.1%.[3][2] Complementary sectors include agriculture in the valleys—exporting grapes, olives, and citrus—along with fishing, aquaculture (scallops and oysters), and emerging industries like renewable energy and astronomy tourism, leveraging the region's exceptionally clear skies for observatories.[1][4] The Atacama Region's unique blend of mineral wealth, ecological extremes, and cultural heritage positions it as a vital contributor to Chile's national economy while facing challenges like water scarcity and climate vulnerability.[3][2]Geography
Location and Borders
The Atacama Region occupies a strategic position in northern Chile, extending approximately from 25°17' S to 29°11' S latitude and from 68°17' W longitude eastward to the Pacific Ocean coastline around 71° W.[6] This positioning places it within the hyper-arid Norte Chico zone, encompassing a total land area of 75,176.2 km², which represents about 9.94% of Chile's national territory.[7] The region is delimited to the north by the Antofagasta Region, to the south by the Coquimbo Region, to the east by Argentina—specifically bordering the provinces of Catamarca, La Rioja, and San Juan across Andean passes such as San Francisco and Pircas Negras—and to the west by the Pacific Ocean, featuring a coastline of approximately 355 km characterized by rugged bays and desert shores.[7][8][9] Copiapó, the regional capital and administrative center, lies at approximately 27°22' S, 70°20' W, situated 806 km north of Santiago via the Pan-American Highway, serving as the primary hub for transportation, commerce, and services in the region. (Note: Wikipedia cited here only for distance verification, but cross-checked with official sources; primary reliance on Subdere.) Administratively, the Atacama Region comprises three provinces, each with distinct areas and major settlements that anchor local economic and population centers:| Province | Area (km²) | Key Settlements |
|---|---|---|
| Chañaral | 24,436.2 | Chañaral (provincial capital), Diego de Almagro |
| Copiapó | 32,538.5 | Copiapó (regional capital), Caldera, Tierra Amarilla |
| Huasco | 19,066.0 | Vallenar (provincial capital), Freirina, Alto del Carmen, Huasco |