Rancho Cucamonga, CA

ZIP code 91701 covers the Alta Loma area of Rancho Cucamonga, in San Bernardino County, north of the city’s more developed commercial corridors and near the foothills of the San Gabriel Mountains. Notable landmarks include Rancho Cucamonga Central Park, a large municipal recreation area; the Pacific Electric Trail, which follows a former rail corridor; and Alta Loma High School. The area is primarily residential, with parks and schools serving local neighborhoods.