Casa Grande (Spanish for Big House) is a city in Pinal County, approximately halfway between Phoenix and Tucson in the U.S. state of Arizona. According to 2010 Census, the population of the city is 48,571. It is named after the Casa Grande Ruins National Monument, which is actually located in Coolidge.

Casa Grande was founded in 1879 during the Arizona mining boom, specifically due to the presence of the Southern Pacific Railroad. In January 1880, the community of Terminus, meaning “end-of-the-line,” was established despite consisting of just five residents and three buildings. In September 1880, railroad executives renamed the settlement Casa Grande, after the Hohokam ruins at the nearby Casa Grande Ruins National Monument. Casa Grande grew slowly, and suffered several setbacks both in 1886 and 1893, when fires ravaged the town, destroying all wooden housing structures within it. When the mining boom slowed in the 1890's, the town was nearly abandoned, but with the advent of agriculture, the town remained alive and well, and was eventually incorporated in 1915.

Arizona (ⁱ/ɛrɪˈzoʊnə/; /ærɪˈzoʊnə/) (Navajo: Hoozdo Hahoodzo; O'odham: Alĭ ṣonak) is a state of the United States, located in the southwestern region of the country. Arizona is also part of the Western United States and of the Mountain West states. Arizona is the sixth most extensive and the 16th most populous of the 50 states. Its capital and largest city is Phoenix. The second largest city is Tucson, followed in population by eight cities of the Phoenix metropolitan area: Mesa, Chandler, Glendale, Scottsdale, Gilbert, Tempe, Peoria, and Surprise.

Arizona is the 48th state and last of the contiguous states to be admitted to the Union, and it achieved statehood on February 14, 1912. Arizona is noted for its desert climate in its southern half, where there are very hot summers and quite mild winters. The northern half of Arizona also features forests of pine, Douglas fir, and spruce trees, a very large, high plateau (the Colorado Plateau) and some mountain ranges—such as the San Francisco Mountains—as well as large, deep canyons, where there is much more moderate weather for three seasons of the year, plus significant snowfalls. There are ski resorts in the areas of Flagstaff and Alpine.