National Historic Register properties in Harford county/parish, Maryland

• Baker, James B., House (Aberdeen)
• Chestnut Ridge (Aberdeen)
• Griffith House (Aberdeen)
• Poplar Hill (Aberdeen)
• Sophia's Dairy (Aberdeen)
• Swansbury (Aberdeen)
• Winsted (Aberdeen)
• Gunpowder Meetinghouse (Aberdeen Proving Ground)
• Presbury Meetinghouse (Aberdeen Proving Ground)
• Nelson-Reardon-Kennard House (Abingdon)
• Woodside (Abingdon)
• Hidden Valley Farm (Baldwin)
• Bel Air Armory (Bel Air)
• Bel Air Courthouse Historic District (Bel Air)
• Broom's Bloom (Bel Air)
• D. H. Springhouse (Bel Air)
• Dibb House (Bel Air)
• Graham-Crocker House (Bel Air)
• Graystone Lodge (Bel Air)
• Harford Furnace Historic District (Bel Air)
• Harford National Bank (Bel Air)
• Hays-Heighe House (Bel Air)
• Hays House (Bel Air)
• Heighe House (Bel Air)
• Joshua's Meadows (Bel Air)
• Liriodendron (Bel Air)
• Mount Adams (Bel Air)
• Norris-Stirling House (Bel Air)
• Odd Fellows Lodge (Bel Air)
• Priest Neal's Mass House and Mill Site (Bel Air)
• Proctor House (Bel Air)
• Thomas Run Church (Bel Air)
• Tudor Hall (Bel Air)
• Tudor Hall (Boundary Decrease) (Bel Air)
• Vineyard, The (Bel Air)
• Vineyard, The (Boundary Decrease) (Bel Air)
• Woodview (Bel Air)
• Rigbie House (Berkley)
• Best Endeavor (Churchville)
• Church of the Holy Trinity (Churchville)
• Churchville Presbyterian Church (Churchville)
• Finney Houses Historic District (Churchville)
• Medical Hall Historic District (Churchville)
• Webster's Forest (Churchville)
• Fair Meadows (Creswell)
• Berkley Crossroads Historic District (Darlington)
• Berkley School (Darlington)
• Darlington Historic District (Darlington)
• Deer Creek Friends Meetinghouse (Darlington)
• Gray Gables (Darlington)
• Lower Deer Creek Valley Historic District (Darlington)
• Silver Houses Historic District (Darlington)
• Wildfell (Darlington)
• Pooles Island Lighthouse (Edgewood)
• St. Mary's Church (Emmorton)
• Bon Air (Fallston)
• Little Falls Meetinghouse (Fallston)
• Rockdale (Fallston)
• St. Ignatius Church (Forest Hill)
• Havre de Grace Historic District (Havre de Grace)
• Havre de Grace Lighthouse (Havre de Grace)
• Hirsch Residence (Havre de Grace)
• MARTHA LEWIS (skipjack) (Havre de Grace)
• Sion Hill (Havre de Grace)
• Southern Terminal, Susquehanna and Tidewater Canal (Havre de Grace)
• Old Joppa Site (Jappatowne)
• Jerusalem Mill Village (Jerusalem)
• McComas Institute (Joppa)
• Olney (Joppa)
• Whitaker's Mill Historic District (Joppa)
• Husband Flint Mill Site (Kalmia)
• St. George's Parish Vestry House (Perryman)
• Gladden Farm (Street)
• Mill Green Historic District (Street)
• Streett, Col. John, House (Street)
• Ladew Topiary Gardens and House (Taylor)
• Broad Creek Soapstone Quarries (Whiteford)
• Slate Ridge School (Whiteford)
• Whiteford-Cardiff Historic District (Whiteford)
• Ivory Mills (White Hall)