County council members are representatives elected based on the four principles of election - universal suffrage, equal election, direct election, and secret election. They are elected to a 4-year term. Hongseong County Council is currently comprised of 11 members elected from 3 eups and 8 myeons.

The council has a chairperson and a vice-chairperson for two years, both elected by anonymous voting by members in a council meeting. The chairperson plays the pivotal role of representing and controlling the proceedings and order of the council as well as monitoring the administration of the council. The vice-chairperson takes over the role in case of emergency.

The final decisions of the council are made in a council meeting. The meeting consists of all council members and is held only if more than one-third of members convene. Except for rare cases, the council rules in favor of a decision if more than half of the members convened vote yes.

In order to deal with agendas and petitions that require attention, each committee brings such issues to a council meeting to proceed with them.

The Council Administration, established to deal with the council's general affairs, has a chief of administration and staff.