St. Mary’s County, MarylandSt. Mary’s County Local Guide
Get to Know St. Mary’s County
From Leonardtown to Lexington Park, California, Hollywood, and rural communities, the right starting point depends on your property’s location and service connections. Use this guide to find official resources and ask the right questions before a move or home project.
Maryland’s first capital is here. St. Mary’s City was established in 1634 in an area already home to the Yacocomico people. Today, archaeology helps tell both Native and colonial stories. Historic St. Mary’s City’s account of the original fort (opens in a new tab) explains how researchers located the early settlement’s fort site.
From colonial capital to naval aviation. Another chapter opened on April 1, 1943, when Naval Air Station Patuxent River began operating in the county. The Naval Air Test Center followed in 1945. The Maryland State Archives timeline (opens in a new tab) places these milestones alongside the county’s earlier history.
General information to help you find the right starting point. Requirements, eligibility, service areas, and application processes can change. Confirm details with the office or provider serving your exact address. Official links open in a new tab. Found a broken link or a changed office? Contact LizyTylerCo and include “St. Mary’s County Guide,” the link name, and what happened. Return to All Resources.