Linwood Historic District is a national historic district at Linwood, Carroll County, Maryland, United States. The district includes a mixture of railway structures (grain elevator, freight station, site of demolished Western Maryland Railway station), community structures (general stores, post office, church, Sunday School hall/schoolhouse, site of blacksmith shop) and residences with rural dependencies (smokehouses, ice houses, windmills, sub-cellars). They date to the 19th and early-20th century and most structures relate to Linwood's role as a rail depot for the transportation of farm goods and supplies. It was added to the National Register of Historic Places in 1980.