Raymond G. Hay, 43, a city planner with the Department of Housing and Urban Development and active in community affairs in Washington, died of Hodgkins disease Friday at George Washington University Hospital.

He had been with HUD since 1967 and was chief planner in the New Community Development Corporation there at the time of his death. Before joining HUD, he was a partner in the consulting firm of Marcou and O'Leary in Washington.

Mr. Hay was born in Detroit. He was a graduate of Northern Michigan University and held a master's degree from American University.

While working at HUD he was a fellow at the Brookings Center for Advanced Study of Intergovernmental Affairs.

He was a leader and former president of Neighbors, Inc., an organization of residents in Shepherd Park, Takoma, Manor Park and Brightwood in Northwest Washington.

Mr. Hay also was president of Plan Takoma, an organization formed to give residents a voice in planning commerical development around new Metro stations. He helped plan and design the Takoma Elementary School.

He was active in Democratic Party affairs and served on Mayor Marion Barry's Transition Team for Urban Planning. He was active in supporting the D.C. Youth Orchestra and National Symphony.

In addition to his Washington home, Mr. Hay had a vacation home at White Stone, Va. on the Chesapeake Bay.

He is survived by his wife, Maija, and three children, Anna, Lisa and Eric, all of Washington; his parents, Mr. and Mrs. H. R. Hay, of Center Line, Mich., and three brothers, Bruce, William and Thomas, all of Michigan. The family suggests that expressions of sympathy be in the form of contributions to the D.C. Youth Orchestra.