Usa-Places.com has listed approx 9 State parks in MD 21228. Some of the Top rated State parks in MD 21228 are- Patapsco Valley State Park - Hilton Area, Grist Mill Walking Bridge, Hilton Camping loop, Santee Branch Trail, pavillion/shelter #245, Saw Mill Branch meets Buzzard Rock trails, Hilton Area Ranger Station, Patapsco State Valley Park - Hilton Area Maintenance Complex & Restrooms.