City of Oxnard | 4,288 followers on LinkedIn. The City of Oxnard is located on the “Gold Coast” of sunny California, approximately halfway between Los Angeles and Santa Barbara, and is known as the gateway to the Channel Islands. Oxnard is a thriving center of commerce, tourism and industry in Ventura County. Oxnard is the largest city in the County with its population of over 200,000 residents.