National Historic Register properties in Boulder county/parish, Colorado

• Bunce School (Allenspark)
• Longhurst Lodge (Allenspark)
• Thunder Lake Trail-Bluebird Lake Trail (Allens Park)
• Arnett-Fullen House (Boulder)
• Barker, Hannah, House (Boulder)
• Boulder County Courthouse (Boulder)
• Boulder County Courthouse (Boulder)
• Boulder County Poor Farm (Boulder)
• Boulder Creek Bridge (Boulder)
• Carnegie Library (Boulder)
• Chautauqua Auditorium (Boulder)
• Colorado Chautauqua (Boulder)
• Columbia Cemetery (Boulder)
• Downtown Boulder Historic District (Boulder)
• First Baptist Church of Boulder (Boulder)
• Fox Mine Office (Boulder)
• Fox Stone Barn (Boulder)
• Highland School (Boulder)
• Holmes, David Hull, House (Boulder)
• Hotel Boulderado (Boulder)
• McKenzie Well (Boulder)
• Mount St. Gertrude Academy (Boulder)
• Norlin Quadrangle Historic District (Boulder)
• Northern Colorado Power Company Substation (Boulder)
• Squires-Tourtellot House (Boulder)
• Swedish Evangelical Lutheran Church of Ryssby (Boulder)
• US Post Office-Boulder Main (Boulder)
• Walker Ranch Historic District (Boulder)
• Walker Ranch Historic District (Boundary Increase) (Boulder)
• Weiser, Martha, House (Boulder)
• Williams, Wilbur, House (Boulder)
• Woodward-Baird House (Boulder)
• Rock Creek Farm Rural Historic District (Broomfield)
• Buchan Cabin (Eldora)
• Denver, Northwestern and Pacific Railway Historic District (Eldora)
• Eldora Historic District (Eldora)
• Gold Miner Hotel (Eldora)
• Gold Miner Hotel (Boundary Increase) (Eldora)
• Thunder Lake Patrol Cabin (Estes Park)
• Wild Basin House (Estes Park)
• Wild Basin Ranger Station and House (Estes Park)
• Gold Hill Historic District (Gold Hill)
• Snowbound Mine (Gold Hill)
• Church of the Brethren (Hygiene)
• Jamestown Mercantile Building (Jamestown)
• Jamestown Town Hall (Jamestown)
• Jamestown Town Hall (Boundary Increase) (Jamestown)
• Boulder Valley Grange No. 131 (Lafayette)
• Congregational Church (Lafayette)
• Kullgren House (Lafayette)
• Lafayette House (Lafayette)
• Lewis House (Lafayette)
• Miller House (Lafayette)
• Shannon Farm (Lafayette)
• Terrace, The (Lafayette)
• Callahan, T. M., House (Longmont)
• Dickens Opera House (Longmont)
• Downtown Longmont Historic District (Longmont)
• East Side Historic District (Longmont)
• Empson Cannery (Longmont)
• Hoverhome and Hover Farmstead (Longmont)
• Longmont Carnegie Library (Longmont)
• Longmont College (Longmont)
• Longmont Fire Department (Longmont)
• St. Stephen's Episcopal Church, 1881 (Longmont)
• Tower of Compassion (Longmont)
• West Side Historic District (Longmont)
• Denver Elevator-Grain Elevator (Louisville)
• Ginacci House (Louisville)
• Jacoe Store (Louisville)
• Lackner's Tavern (Louisville)
• LaSalla House (Louisville)
• National Fuel Company Store (Louisville)
• Petrelli-DelPizzo House (Louisville)
• Rhoades House (Louisville)
• Robinson House (Louisville)
• Stolmes House (Louisville)
• Tego Brothers Drugstore-State National Bank of Louisville (Louisville)
• Thomas House (Louisville)
• First Congregational Church of Lyons (Lyons)
• Longmont Power Plant (Lyons)
• Lyons Railroad Depot (Lyons)
• Lyons Sandstone Buildings (Lyons)
• North St. Vrain Creek Bridge (Lyons)
• Sandbeach Lake Trail (Meeker Park)
• Cardinal Mill (Nederland)
• Rocky Mountain Mammoth Mine (Nederland)
• Denver, Northwestern and Pacific Railway Historic District-Rollinsville & Middle Park Wagon Road (Boundary Increase) (Rollinsville)
• Little Church in the Pines (Salina)
• Salina School (Salina)
• Sunshine School (Sunshine)
• Wall Street Assay Office (Wallstreet)
• Wall Street Assay Office (Boundary Increase) (Wall Street)
• Denver, Boulder and Western Railway Historic District (Ward)
• Modoc Mill (Ward)
• Ward Congregational Church (Ward)
• Ward School (Ward)