The Fairfax County Economic Development Authority has appointed April Louise Young as executive director effective July 13.

Young succeeds David A. Edwards, who resigned May 14 in a policy dispute with the authority's board. Edwards has been appointed executive director of the Virginia Peninsula Economic Development Council.

Fairfax County officials said Young's appointment climaxed an exhaustive four-month search for a new executive director.

In a statement announcing her appointment yesterday, the county's economic development authority said it is confident that Young has the qualifications and experience to continue the county's "highly successful" economic and industrial development program.

Young currently is a consultant to the Phoenix Fund, preparing analyses and studies involving development and land-use problems. She was director of economic development for St. Louis, Mo., from 1979 through 1981.

She received a baccalaureate degree from George Washington University in 1967 and a masters degree in public administration in 1973. Young is a candidate for a Ph.D. degree in public policy analysis at St. Louis University.

Young is the author of several articles on land use and economic development, and is a member of the American Institute of Certified Planners and the American Institute of Planners.

Women also head the economic development offices in Montgomery and Loudoun counties.