Fallston is in Harford County, Maryland. The population was 8,427 at the 2000 census. It is a semi-rural community consisting mostly of farms and suburban-like developments. Bon Air, Little Falls Meetinghouse and Rockdale are listed on the National Register of Historic Places.

It is home to The Fallston Club, a family oriented facility located in a beautiful wooded setting in Harford County which boasts a variety of pools, sport, & tennis courts, bath houses, pavilions, playground and outdoor grills provide you with the quintessential summer experience. It hosts a competitive swim team and other Red Cross certified swim lessons. Members can also participate in Club sponsored tennis leagues and enjoy private or group instruction from a tennis instructor.