LCO is an acronym that stands for "Local Carrying Office." LCOs are designated offices that handle the delivery of mail and packages within a specific geographic region. There are several synonyms for LCO that can be used interchangeably, including "post office," "mail center," "postal depot," and "delivery hub." Regardless of the terminology used, LCOs play a vital role in ensuring that mail and packages are delivered to the correct location and in a timely manner. Without LCOs, mail delivery would be significantly slower and less efficient, making it more challenging for businesses and individuals to receive their packages and correspondence.