Welcome to the Thornleigh Improvement Association (TIA) website. The main goal of this website is to provide various resources for our neighbors. On this website you will find information on current events happening in Thornleigh, contact information for board members, copy of the community Covenants, and answers to frequently asked questions.

Your voluntary $25 contribution to the Annual Dues Drive helps the TIA promote various community events throughout the year as well as having this website.

Thornleigh is a close knit community located in Towson, Maryland; it is part of Baltimore County. The Thornleigh neighborhood consists of 232 families. Centrally located in Thornleigh is the Valley Swim and Tennis Club for neighbors to join. Thornleigh is in the Baltimore County Public Schools district. Our public schools are Riderwood Elementary School, Dumbarton Middle School, and Towson High School. The neighborhood is easily accessible to Interstates 695 and 83, making Towson and York Road, as well as downtown, within easy reach.

We are a covenant neighborhood that helps preserve the charming curb appeal maintained by neighbors for decades. The original housing styles consist of four models: a three-bedroom Colonial, a four-bedroom rancher and two styles of split-levels, both with three bedrooms. There are also duplexes found in the neighborhood.