Welcome sign at Relay, Maryland

Greetings from Relay and St. Denis!

  1. Learn about the community
  2. Experience our Town Hall
  3. Find neighborhood resources
  4. Get the latest news
  5. Join or renew RIA membership

Relay is halfway between Baltimore and Ellicott City. It was created in 1830 as a change point, or “relay,” for horses hauling the first scheduled railroad cars in the United States.

A vibrant destination...

Located in the Patapsco River Valley, Relay and St. Denis are rich in history and natural beauty.

The community is home to a variety of historic landmarks, including the Thomas Viaduct, the oldest multi-arched stone railroad bridge in the world, and Patapsco Valley State Park .

The area is a popular destination for train, recreation and exercise enthusiasts alike. The picturesque streets highlight the glory of historic Baltimore County, Maryland.

  • Well-preserved residential architecture
  • Tradition of activism and community engagement
  • Walking distance to Patapscpo Park, the library, senior center and more
  • Close to BWI airport and MARC train
  • Near Baltimore and Wasthington DC



  1. Covered Dish

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  2. RIA General Meeting

    Relay Town Hall
  3. Earth Day

    Relay Town Hall
  4. Covered Dish

    Relay Town Hall