Minnesota - Area of significance: Architecture
| Calumet Hotel |
| Calvary Baptist Church |
| Calvary Lutheran Church |
| Camden State Park CCC/WPA/Rustic Style Historic District |
| Cameron, Daniel, House |
| Campbell, William H. and Alma Downer, House |
| Cannon Falls School |
| Carlson, G. A., Lime Kiln |
| Carlson, J. C., House |
| Carlton County Courthouse |
| Carpenter, Elbert L., House |
| Carufel, Louis, and E. LaRose, House |
| Carver Historic District |
| Casey, Patrick, House |
| Cathedral of Our Merciful Saviour |
| Cedar Square West |
| Center Building-Minnesota Hospital for The Insane |
| Center City Historic District |
| Central Presbyterian Church |
| Central School |
| Chadwick, Loren L., Cottages |
| Chamber of Commerce |
| Chamber of Commerce Building |
| Chapel of the Good Sheperd |
| Chateau Dodge Theatre |
| Chatfield Public Library |
| Chester Terrace |
| Chicago and North Western Railroad Depot |
| Chicago, Milwaukee, and St. Paul Depot |
| Chicago, Milwaukee, St. Paul and Pacific Depot, Freight House and Train Shed |
| Chippewa County Bank |
| Chollar, H. D., House |
| Christ Church-Episcopal |
| Christ Church Lutheran |
| Church of Our Savio-Episcopal |
| Church of St. Adrian-Catholic |
| Church of St. Agnes-Catholic |
| Church of St. Bernard-Catholic |
| Church of St. Bridget-Catholic |
| Church of St. Casimir-Catholic |
| Church of St. Francis Xavier-Catholic |
| Church of St. Joseph-Catholic |
| Church of St. Joseph-Catholic |
| Church of St. Mary Help of Christians-Catholic |
| Church of St. Michael-Catholic |
| Church of St. Peter-Catholic |
| Church of Sts. Joseph and Mary-Catholic |
| Church of Sts. Peter and Paul-Catholic |
| Church of St. Stanislaus-Catholic |
| Church of St. Stephen (Catholic) |
| Church of St. Stephen-Catholic |
| Church of the Advent |
| Church of the Annunciation-Catholic |
| Church of the Assumption-Catholic |
| Church of the Good Shepherd |
| Church of the Good Shepherd-Episcopal |
| Church of the Holy Comforter-Episcopal |
| Church of the Holy Communion-Episcopal |
| Church of the Holy Cross-Episcopal |
| Church of the Holy Trinity-Catholic |
| Church of the Immaculate Conception-Catholic |
| Church of the Incarnation and Rectory |
| Church of the Redeemer-Episcopal |
| Church of the Sacred Heart (Catholic) |
| Chyphers, John T., House |
| Citizens' National Bank |
| Clarke, Nehemiah P., House |
| Clarks Grove Cooperative Creamery |
| Clearwater Masonic Lodge-Grand Army of the Republic Hall |
| Clement, C. C., House |
| Cloquet City Hall |
| Coan House |
| Coates House |
| Cobb, Cyrus B., House |
| Coe, Amos B., House |
| Cole, Gordon, and Kate D. Turner, House |
| Coleraine Carnegie Library |
| Coleraine City Hall |
| Coleraine Methodist Episcopal Church |
| Coller, Julius A., House |
| Colonial Hall and Masonic Lodge No. 30 |
| Commercial Bank Building |
| Como Park Conservatory |
| Comstock Public School |
| Comstock, Solomon Gilman, House |
| Congdon, Chester and Clara, Estate |
| Congregational Church of Ada |
| Congregational Church of Faribault |
| Cook County Courthouse |
| Cooke, Jay, State Park CCC/Rustic Style Historic District |
| Cooke, Jay, State Park CCC/WPA/Rustic Style Picnic Grounds |
| Cooke, Jay, State Park CCC/WPA/Rustic Style Service Yard |
| Cook-Hormel House |
| Copas, John, House |
| Cosgrove, Carson H., House |
| Cottonwood County Courthouse |
| Cottrell, John N. and Elizabeth Taylor Clinton, House |
| Country Club Historic District |
| Cowing, Thomas F., House |
| Cox, Eugene Saint Julien, House |
Data from United States Park Service and Wikidata
