In Oceanside, the city's 2017 Comprehensive Annual Financial Report reveals a diverse range of top employers spanning various sectors like education, healthcare, municipal services, agriculture, transportation, and technology.. The Oceanside Unified School District, Tri-City Hospital District, Mira Costa College, the City of Oceanside, West Coast Tomato Growers, North County Transit District, Genentech Inc., TE Connectivity, Hydranautics, and Oceans Eleven Casino are just a few of the employers that make up this list.