Rossmoor is an unincorporated community at the northwest outskirts of Orange County. Itself not an actual city, Rossmoor is serviced by Los Alamitos Post Office (90720) and uses many of the other services of neighboring cities of Los Alamitos and or Seal Beach.  The highly-acclaimed Los Alamitos Unified School District provides public education for all residents living in the 90720 zip code.

History of Rossmoor
Rossmoor Community Services District
Rossmoor Homeowners Association
Los Alamitos Unified School District
Los Alamitos Chamber of Commerce
Los Alamitos Police Department
Orange County Sheriff - Rossmoor
Libraries