Plano is located in Collin County on the northern edge of the Dallas, Texas metro area.
Throughout much of this century Plano relied on surrounding farms and ranches for its livelihood. By the 1960s, the growth of both Dallas to the south and the success of several large high-technology firms began to make their influence felt on the local economy and city planners began making preparations for the growth they believed was inevitable. When the U.S. population began its historic shift in the 1970s, Plano welcomed newcomers with open arms and this resulted in Plano being one of the fastest-growing cities in Texas and the U.S.
The population estimate for July 1, 1998 was 219,486, an increase of 91,601 since 1990.