Charles F. Schwan Jr., 78, a retired director of the Council of State Governments and a former consultant who was active in civic affairs in Greenbelt, died of chronic obstructive lung disease April 5 at the Greenbelt Nursing Center.

Mr. Schwan, who had lived in Greenbelt since 1953, was a member of the Greenbelt City Council from 1971 to 1981. He was named Greenbelt Citizen of the Year in 1982. He had served on the board of Greenbelt Homes Inc. from 1953 to 1971 and was board president from 1964 to 1970.

He came to Washington in 1952 as representative of the Council of State Governments, then a Chicago-based lobbying organization for state governments. He became the organization's director in 1962 and held that post until retiring in 1968. For the next four years, he was partner in the old Washington government consulting firm of Wendell & Schwan, before retiring again in 1972.

Mr. Schwan was a native of Fredonia, N.Y., and served with the Army in the Southwest Pacific during World War II. He earned a bachelor's degree in political science at Hiram College in Ohio.

His wife, the former Agatha Locker, died in 1955. Survivors include two sons, Charles F. III, of Lanham, and Paul R., of Martinsburg, W.Va.; a daughter, Margaret M. Zitch of Chatham Township, N.J.; a brother, William, and a sister, Margaret Turner, both of Falconer, N.Y.; a half brother, Arthur Bellman of Buffalo, and four grandchildren.