Commander Paylor becomes the new president.
Katniss' mother trained new medical units in the Capitol, alongside Prim who became a doctor.
Gale Hawthorne assumes a government position in District 2, Katniss is relieved by this and hopes he'll soon find someone else to fall in love with and forget her. She, eventually, forgave him but the two's friendship was never the same.
Plutarch Heavensbee is appointed as the Secretary of Communications.
Effie and Haymitch promise to keep in touch, and they do so through letters and occasional train trips. Haymitch permanently lived in District 12 with Katniss and Peeta.
Beetee stayed in the Capitol and helped with the technological aspect of things when needed. Otherwise, he lived a life of much needed rest and peace. Jessica and Finnick kept in touch with him.
Enobaria returns back home to District 2 and lives the rest of her life away from the Capitol unless absolutely necessary. She found peace in the silence and managed to live the rest of her life happily.
AN: just an overall summary, can't believe this story is almost over