San Marcos is a gorgeous and aesthetically pleasing city in San Diego County, California The population of this city is estimated to be around 90,000 residents and it is located in the northern region of San Diego County. San Marcos is home to California State University and several other prominent colleges. Also known as the heart of education of North San Diego, San Marcos is known ... https://accesscontrolsecurity.com/school-security-guard-company-in-escondido-and-san-marcos-ca/