[2] Throughout the mid-twentieth century, this commercial strip, known as “Miracle Mile,” functioned as the northern vehicular gateway of Tucson for travelers traversing the nation.

The bulk of the contributing resources, facing or within one block of the historic highway alignment, relate to mid‑century auto culture and were constructed in 1920 through 1963 during the district's period of significance.

While the district has been rendered discontiguous by development, the identified segments have sufficient significance and integrity to meet National Register criteria.

In total, the Miracle Mile Historic District includes 102 individual properties, many with multiple buildings, structures, and objects.

Within the Miracle Mile Historic District are 279 individual resources, including 215 buildings, 1 site, 34 structures, and 29 objects.