The Fifth Supervisorial District covers the northernmost area of San Diego County, and is more commonly known as North County. It stretches from the wave-swept sands of the Oceanside coast, to the pine-topped hills of the Palomar Mountain Range and beyond to the expanses of the Anza-Borrego Desert. The district, with nearly 1,800 square miles, is a vast resource of nature, industry, universities, resorts, golf courses, fine restaurants, agriculture and a theme park. Supervisor Desmond and his staff consider it an honor to serve the approximately 630,000 people who reside in the Fifth District.

The Fifth District is one of the two supervisorial districts that predominantly contain unincorporated communities and includes approximately 230,000 unincorporated area residents.  Supervisor Desmond is committed to bringing the County, as the local public services provider, to these communities to address local issues and serve the needs of these communities.

Agriculture is a major industry in the Fifth District and the San Diego region. Summits and valleys are covered with groves of avocado and citrus trees. Decorative flowers, grown commercially, paint the hills of Carlsbad each year with a rainbow of colors. Elsewhere, cattlemen tend their herds in the oak-studded inland valley, and farmers plant and harvest their crops that include strawberries and tomatoes. In springtime, wildflowers carpet the Anza-Borrego Desert.

In addition to agriculture, several other industries make North County a hotbed for economic success. Innovation, tourism and specialized manufacturing are thriving in North County and are the future in the Fifth District. The biotechnology industry has firmly established itself in the district, providing high-paying jobs and cutting-edge opportunities to thousands of workers. North County is also becoming a regional powerhouse for higher education as the California State University San Marcos campus continues to grow along with the Palomar and MiraCosta Community College campuses. The McClellan-Palomar Airport in Carlsbad is a crucial economic driver for North County, contributing an estimated $108 million annually to the local economy.

Within the Fifth District are the cities of Oceanside, Carlsbad, Vista, and San Marcos, as well as Marine Corps Base Camp Pendleton. The district includes the unincorporated communities of Agua Caliente, Bear Valley, Birch Hill, Bonsall, Borrego Springs, Buena, De Luz, Eagles Nest, Elfin Forest, Fairbanks Ranch, Fallbrook, Gopher Canyon, Harmony Grove, Hidden Meadows, Jesmond Dene, La Jolla Amago, Lake Henshaw, Lake San Marcos, Lake Wohlford, Lilac, Morettis, Oak Grove, Ocotillo Wells, Pala, Palomar Mountain, Pauma Valley, Rainbow, Ranchita, Rancho Santa Fe, San Felipe, San Ignacio, San Luis Rey, Sunshine Summit, Twin Oaks Valley, Valley Center, Warner Springs, and Winterwarm. The district is also home to the Indian Reservations of La Jolla, Los Coyotes, Mesa Grande, Pala, Pauma/Yuima, Rincon, Santa Ysabel and San Pasqual. There are also vast areas of National Forest, State Park lands, the San Onofre Nuclear Generating Station and the United States Naval Weapons Station in Fallbrook that fall within district boundaries.