| 100 East Building | Milwaukee | Building | 2025 |
| 16th Street Viaduct | Milwaukee | Structure | 2019 |
| 20th Street School | Milwaukee | Building | 2020 |
| 27th and Wells Streets Commercial Historic District | Milwaukee | District | 2016 |
| 37th Street School | Milwaukee | Building | 2020 |
| A.O. Smith Corporation Headquarters | Milwaukee | District | 2022 |
| APPOMATTOX (Shipwreck) | Shorewood | Site | 2005 |
| APPOMATTOX (shipwreck) (Boundary Increase II and Additional Documentation) | Shorewood | Site | 2015 |
| APPOMATTOX (shipwreck) Boundary Increase | Shorewood | Site | 2011 |
| Abbot Row | Milwaukee | Building | 1983 |
| Abresch, Charles, House | Milwaukee | Building | 1986 |
| Adelman, Albert and Edith, House | Fox Point | Building | 2005 |
| Adler, Emanuel D., House | Milwaukee | Building | 1991 |
| All Saints' Episcopal Cathedral Complex | Milwaukee | Building | 1974 |
| Allis, Charles, House | Milwaukee | Building | 1975 |
| American System Built Homes-Burnham Street District | Milwaukee | District | 1985 |
| Annunciation Greek Orthodox Church | Wauwatosa | Building | 1974 |
| Arndt, Rufus, House | Whitefish Bay | Building | 1985 |
| Astor on the Lake | Milwaukee | Building | 1984 |
| Baasen House-German YMCA | Milwaukee | Building | 1984 |
| Barbee, Lloyd A., House | Milwaukee | Building | 2019 |
| Barfield-Staples House | Whitefish Bay | Building | 1985 |
| Baumbach Building | Milwaukee | Building | 1983 |
| Bay View Historic District | Milwaukee | District | 1982 |
| Blatz Brewery Complex | Milwaukee | Building | 1986 |
| Blatz, Valentin, Brewing Company Office Building | Milwaukee | Building | 1983 |
| Blommer Ice Cream Company | Milwaukee | Building | 2017 |
| Bogk, Frederick C., House | Milwaukee | Building | 1972 |
| Bossert, Thomas, House | Shorewood | Building | 1985 |
| Brewers Hill Historic District | Milwaukee | District | 1984 |
| Brewers Hill Historic District (Boundary Increase) | Milwaukee | District | 1995 |
| Brown Deer School | Brown Deer | Building | 1993 |
| Buemming, Herman W., House | Milwaukee | Building | 1990 |
| Burnham, J. L., Block | Milwaukee | Building | 1988 |
| Calkins, Elias A., Doublehouse | Milwaukee | Building | 1990 |
| Calvary Presbyterian Church | Milwaukee | Building | 1986 |
| Carleton District #3 School | Milwaukee | Building | 2025 |
| Carpenter, Michael, House | Milwaukee | Building | 1986 |
| Cass-Juneau Street Historic District | Milwaukee | District | 1988 |
| Cass-Wells Street Historic District | Milwaukee | District | 1986 |
| Central Library | Milwaukee | Building | 1974 |
| Century Building | Milwaukee | Building | 2017 |
| Chief Lippert Fire Station | Milwaukee | Building | 1988 |
| Christ Evangelical Lutheran Church | Milwaukee | Building | 1987 |
| Church Street Historic District | Wauwatosa | District | 1989 |
| Church, Benjamin, House | Shorewood | Building | 1972 |
| Coakley Brothers Warehouse | Milwaukee | Building | 2018 |
| Commerce Street Power Plant | Milwaukee | Building | 1999 |
| Concordia Historic District | Milwaukee | District | 1985 |
| Congregation Beth Israel Synagogue | Milwaukee | Building | 1992 |
| Cook, Thomas, House | Milwaukee | Building | 1986 |
| Cords, Erwin, House | Shorewood | Building | 1985 |
| Cudahy Chicago and North Western Railway Depot | Cudahy | Building | 2013 |
| Curtin, Jeremiah, House | Greendale | Building | 1972 |
| Dahinden, Edward J., House | Milwaukee | Building | 1986 |
| Damon, Lowell, House | Wauwatosa | Building | 1972 |
| Davis, H. R., House | Wauwatosa | Building | 1985 |
| Day, Dr. Fisk Holbrook, House NHL | Wauwatosa | Building | 1997 |
| Desmond-Farnham-Hustis House | Milwaukee | Building | 1990 |
| Dover Street School and Social Center | Milwaukee | Building | 2016 |
| EMBA (self-unloading barge) Shipwreck | Milwaukee | Site | 2013 |
| Eagle Knitting Mills | Milwaukee | Building | 2020 |
| Eagles Club | Milwaukee | Building | 1986 |
| East Brady Street Historic District | Milwaukee | District | 1990 |
| East Oregon and South Barclay Industrial Historic District | Milwaukee | District | 2014 |
| East Side Commercial Historic District | Milwaukee | District | 1986 |
| East Village Historic District | Milwaukee | District | 2004 |
| Elderwood | Glendale | Building | 1980 |
| Esbenshade, Abraham H., House | Milwaukee | Building | 1986 |
| Exton Apartments Building | Milwaukee | Building | 1997 |
| Federal Building | Milwaukee | Building | 1973 |
| Fiebing, J. H., House | Wauwatosa | Building | 1985 |
| Fiebing, Otto F., House | Milwaukee | Building | 1985 |
| Fifteenth District School | Milwaukee | Building | 2021 |
| Fifth Street School | Milwaukee | Building | 2018 |
| First Church of Christ, Scientist | Milwaukee | District | 1989 |
| First Unitarian Church | Milwaukee | Building | 1974 |
| First Ward Triangle Historic District | Milwaukee | District | 1987 |
| Florida and Third Industrial Historic District | Milwaukee | District | 2008 |
| Forest Home Cemetery and Chapel | Milwaukee | Building | 1980 |
| Foth, Christian, House | Milwaukee | Building | 1988 |
| Fourth Street School NHL | Milwaukee | Building | 1984 |
| Friedmann Row | Milwaukee | Building | 1996 |
| GRACE A. CHANNON (canaller) Shipwreck | Oak Creek | Site | 2017 |
| Gabel, George, House | Whitefish Bay | Building | 1985 |
| Gallun Tannery Historic District | Milwaukee | District | 1984 |
| Garden Homes Historic District | Milwaukee | District | 1990 |
| George, Warren B., House | Wauwatosa | Building | 1985 |
| German-English Academy | Milwaukee | Building | 1977 |
| Germania Building | Milwaukee | Building | 1983 |
| Gesu Church | Milwaukee | Building | 1986 |
| Gimbels Parking Pavilion | Milwaukee | Building | 2001 |
| Goodwill Industries Building | Milwaukee | Building | 2004 |
| Graham Row | Milwaukee | Building | 1979 |
| Grand Avenue Congregational Church | Milwaukee | Building | 1986 |
| Grand Avenue Elementary School | Milwaukee | Building | 2018 |
| Greendale Historic District NHL | Greendale | District | 2005 |
| Greene, Thomas A., Memorial Museum NHL | Milwaukee | Building | 1993 |
| Greenfield School | West Allis | Building | 2006 |
| Hardie, Harrison, House | Whitefish Bay | Building | 1985 |
| Harley-Davidson Motor Company Factory No. 7 | Milwaukee | Building | 2020 |
| Harley-Davidson Motorcycle Factory Building | Milwaukee | Building | 1994 |
| Hart, Thomas B., House | Wauwatosa | Building | 1985 |
| Hatch, Horace W., House | Whitefish Bay | Building | 1985 |
| Hatch, Seneca W. & Bertha, House | Shorewood | Building | 1985 |
| Henni Hall | St. Francis | Building | 1974 |
| Highland Avenue Methodist Church | Milwaukee | Building | 1986 |
| Highland Boulevard Historic District | Milwaukee | District | 1985 |
| Historic Third Ward District | Milwaukee | District | 1984 |
| Hoelz, Alfred M., House | Milwaukee | Building | 1985 |
| Holy Family Roman Catholic Church Complex | Cudahy | Building | 2021 |
| Holy Trinity Roman Catholic Church | Milwaukee | Building | 1972 |
| Home Office, Northwestern Mutual Life Insurance Company | Milwaukee | Building | 1973 |
| Honey Creek Parkway | Wautwatosa | District | 2010 |
| Hopkins, Willis, House | Wauwatosa | Building | 1985 |
| Hotel Schroeder | Milwaukee | Building | 2024 |
| Howie, David W., House | Milwaukee | Building | 1986 |
| Hunt, W. Ben, Cabin | Hales Corners | Building | 2008 |
| Immanuel Presbyterian Church | Milwaukee | Building | 1974 |
| Iron Block | Milwaukee | Building | 1974 |
| Jenkins, Halbert D., House | Whitefish Bay | Building | 1985 |
| Johnston Hall | Milwaukee | Building | 1986 |
| Jones-Hill House | Milwaukee | Building | 2021 |
| Joseph Schiltz Company Brewery Complex | Milwaukee | Building | 1999 |
| Juneau Highlands Residential Historic District | West Allis | District | 2011 |
| Kalvelage, Joseph B., House | Milwaukee | Building | 1978 |
| Kane, Sanford R., House | Milwaukee | Building | 1991 |
| Kegel's Inn | West Allis | Building | 2010 |
| Kenwood Park-Prospect Hill Historic District | Milwaukee | District | 2002 |
| Ketter, Frederick, Warehouse | Milwaukee | Building | 1984 |
| Kilbourn Avenue Row House Historic District | Milwaukee | District | 1986 |
| Kilbourn Masonic Temple | Milwaukee | Building | 1986 |
| Kinnickinnic River Parkway | Milwaukee | District | 2011 |
| Knapp-Astor House | Milwaukee | Building | 1980 |
| Kneeland-Walker House | Wauwatosa | Building | 1989 |
| Knickerbocker Hotel | Milwaukee | Building | 1988 |
| Koeffler-Baumgarten Double House | Milwaukee | Building | 2020 |
| Koelsch Funeral Home | West Allis | Building | 2010 |
| Kopperud Park Residential Historic District | West Allis | District | 2017 |
| LIGHT VESSEL No. 57 (Shipwreck) | Milwaukee | Site | 1991 |
| LUMBERMAN shipwreck (schooner) | Oak Creek | Site | 2009 |
| Lake Park | Milwaukee | District | 1993 |
| Lakeview Hospital | Milwaukee | Building | 2024 |
| Lawson Airplane Company-Continental Faience and Tile Company | South Milwaukee | Building | 2001 |
| Lincoln Creek Parkway | Milwaukee | District | 2021 |
| Lindsay-Bostrom Building | Milwaukee | Building | 2002 |
| Lohman Funeral Home and Livery Stable | Milwaukee | Building | 1988 |
| MILWAUKEE (steam screw) Shipwreck | Fox Point | Site | 2015 |
| Machek, Robert, House | Milwaukee | Building | 1977 |
| Mackie Building | Milwaukee | Building | 1973 |
| Mansfield, George C., Company Building | Milwaukee | Building | 2016 |
| Marshall & Ilsley Bank | Milwaukee | Building | 2021 |
| Mayer Boot and Shoe Company Building | Milwaukee | Building | 1984 |
| McCullough and Dixon Steam Laundry and Soap Company | Milwaukee | Building | 2022 |
| McEwens, John F., House | Whitefish Bay | Building | 1985 |
| McIntosh-Goodrich Mansion | Milwaukee | Building | 2000 |
| McKinley Boulevard Historic District | Milwaukee | District | 1985 |
| McMicken, Alexander Herschel and Pauline G., House | West Allis | Building | 2010 |
| Meyer, Henry A., House | Shorewood | Building | 1985 |
| Meyer, Starke, House | Fox Point | Building | 1985 |
| Milwaukee Athletic Club | Milwaukee | Building | 2019 |
| Milwaukee Breakwater Light | Milwaukee | Structure | 2011 |
| Milwaukee City Hall NHL | Milwaukee | Building | 1973 |
| Milwaukee County Courthouse | Milwaukee | Building | 1982 |
| Milwaukee County Dispensary and Emergency Hospital | Milwaukee | Building | 1985 |
| Milwaukee County Historical Center | Milwaukee | Building | 1973 |
| Milwaukee County Home for Dependent Children-Administriation Building | Wauwatosa | Building | 1999 |
| Milwaukee County School of Agriculture and Domestic Economy Historic District | Wauwatosa | District | 1998 |
| Milwaukee Hospital | Milwaukee | Building | 2006 |
| Milwaukee Jewish Home for the Aged | Milwaukee | Building | 2024 |
| Milwaukee Journal Complex | Milwaukee | Building | 2021 |
| Milwaukee News Building and Milwaukee Abstract Association Building | Milwaukee | Building | 1982 |
| Milwaukee Normal School-Milwaukee Girls' Trade and Technical High School | Milwaukee | Building | 1986 |
| Milwaukee Paper Box Company | Milwaukee | Building | 2013 |
| Milwaukee Pierhead Light | Milwaukee | Structure | 2012 |
| Milwaukee Protestant Home for the Aged | Milwaukee | Building | 2023 |
| Milwaukee River Parkway | Milwaukee | District | 2012 |
| Milwaukee-Downer "Quad" | Milwaukee | Building | 1974 |
| Milwaukee-Western Fuel Company Building | Milwaukee | Building | 1992 |
| Mitchell Building | Milwaukee | Building | 1973 |
| Mitchell, Alexander, House | Milwaukee | Building | 2012 |
| Morgan, George E., House | Shorewood | Building | 1985 |
| Mount Hope Evangelical Lutheran Church | West Allis | Building | 2025 |
| Muirdale Tuberculosis Sanatorium | Wauwatosa | Building | 2018 |
| New Coeln House | Milwaukee | Building | 1988 |
| Newberry Boulevard Historic District | Milwaukee | District | 1994 |
| Nohl, Mary L., Art Environment | Fox Point | Site | 2005 |
| North 47th Street Bungalow Historic District | Milwaukee | District | 2017 |
| North First Street Historic District | Milwaukee | District | 1984 |
| North Grant Boulevard Historic District | Milwaukee | District | 1995 |
| North Milwaukee High School | Milwaukee | Building | 2023 |
| North Point Lighthouse | Milwaukee | Building | 1984 |
| North Point North Historic District | Milwaukee | District | 2000 |
| North Point South Historic District | Milwaukee | District | 1979 |
| North Point Water Tower | Milwaukee | Structure | 1973 |
| North Sherman Boulevard Historic District | Milwaukee | District | 2004 |
| North Third Street Historic District | Milwaukee | District | 1984 |
| Northwestern Branch, National Home for Disabled Volunteer Soldiers Historic District NHL | Milwaukee | District | 2005 |
| Norton, Pearl C., House | Wauwatosa | Building | 1985 |
| Nunn-Bush Shoe Company Factory | Milwaukee | Building | 2017 |
| Oak Creek Parkway | South Milwaukee | District | 2011 |
| Old St. Mary's Church | Milwaukee | Building | 1973 |
| Old World Third Street Historic District | Milwaukee | District | 1987 |
| Oliver, Joseph B., House | Milwaukee | Building | 1990 |
| Oneida Street Station | Milwaukee | Building | 1984 |
| Oriental Theatre | Milwaukee | Building | 2023 |
| Pabst Brewery Saloon | Milwaukee | Building | 1986 |
| Pabst Brewing Company Complex | Milwaukee | Building | 2003 |
| Pabst Theater NHL | Milwaukee | Building | 1972 |
| Pabst, Frederick and Maria, House (Additional Documentation) | Milwaukee | Building | 1975 |
| Pabst, Frederick, House | Milwaukee | Building | 1975 |
| Painesville Chapel | Franklin | Building | 1977 |
| Peck, George W., Row House | Milwaukee | Building | 2016 |
| Peckham Junior High School | Milwaukee | Building | 2012 |
| Pittsburgh Plate Glass Enamel Plant | Milwaukee | Building | 2009 |
| Plankinton-Wells-Water Street Historic District | Milwaukee | District | 1986 |
| Pritzlaff, John, Hardware Company | Milwaukee | Building | 2013 |
| Prospect Avenue Apartment Buildings Historic District | Milwaukee | District | 1990 |
| Prospect Avenue Mansions Historic District | Milwaukee | District | 1990 |
| Prospect Hill Historic District | Milwaukee | District | 2005 |
| Public School No. 27 | Milwaukee | Building | 1984 |
| Public Sevice Building | Milwaukee | Building | 1998 |
| Pythian Castle Lodge | Milwaukee | Building | 1988 |
| Quarles, Charles, House | Milwaukee | Building | 1979 |
| Range Line Road Bridge | River Hills | Structure | 2015 |
| Root River Parkway | Greendale | District | 2013 |
| Saint Anthony Hospital | Milwaukee | Building | 2017 |
| Saint George Melkite Catholic Church | Milwaukee | Building | 1986 |
| Saint James Court Apartments | Milwaukee | Building | 2008 |
| Saint Peter's Evangelical Lutheran Church | Milwaukee | Building | 1987 |
| Saint Vincent's Infant Asylum | Milwaukee | Building | 1987 |
| Saints Peter and Paul Roman Catholic Church Complex | Milwaukee | District | 1991 |
| Salem Evangelical Church | Milwaukee | Building | 1987 |
| Schlitz, Joseph, Brewing Company Saloon | Milwaukee | Building | 1977 |
| Schlitz, Victor, House | Milwaukee | Building | 1986 |
| Schoonmaker Reef NHL | Milwaukee | Site | 1997 |
| Schramka Funeral Home | Milwaukee | Building | 2023 |
| Schuster, George, House and Carriage Shed | Milwaukee | Building | 1986 |
| Second Church of Christ Scientist | Milwaukee | Building | 1986 |
| Sheridan Apartment Building | Milwaukee | Building | 2020 |
| Shorecrest Hotel | Milwaukee | Building | 1984 |
| Shorewood Village Hall | Shorewood | Building | 1984 |
| Sivyer, Fred, House | Milwaukee | Building | 1986 |
| Sixth Church of Christ, Scientist | Milwaukee | Building | 1980 |
| Smith, Lloyd R., House | Milwaukee | Building | 1974 |
| Soldiers' Home Reef NHL | Milwaukee | Site | 1993 |
| South Branch Library | Milwaukee | Building | 1988 |
| South First and Second Street Historic District | Milwaukee | District | 1987 |
| South Layton Boulevard Historic District | Milwaukee | District | 1996 |
| South Milwaukee Passenger Station | South Milwaukee | Building | 1978 |
| South Milwaukee Post Office | South Milwaukee | Building | 2000 |
| Spencerian Business College | Milwaukee | Building | 2008 |
| Sperling, Frederick, House | Whitefish Bay | Building | 1985 |
| Spring Grove Site | Milwaukee | Site | 1979 |
| Square D Company-Industrial Controller Division | Milwaukee | Building | 2014 |
| St. James Episcopal Church | Milwaukee | Building | 1979 |
| St. John's Evangelical Lutheran Church Complex | Milwaukee | District | 1992 |
| St. John's Roman Catholic Cathedral | Milwaukee | Building | 1974 |
| St. Josaphat Basilica | Milwaukee | Building | 1973 |
| St. Martini Evangelical Lutheran Church | Milwaukee | Building | 1987 |
| St. Matthew Christian Methodist Episcopal Church | Milwaukee | Building | 2019 |
| St. Patrick's Roman Catholic Church | Milwaukee | Building | 1974 |
| St. Paul's Episcopal Church | Milwaukee | Building | 1974 |
| State Bank of Wisconsin | Milwaukee | Building | 1984 |
| Steinmeyer, William, House | Milwaukee | Building | 1984 |
| Sunnyhill Home | Wauwatosa | Building | 1980 |
| TOPS Club Inc | Milwaukee | Building | 2022 |
| TRANSFER (self-unloading barge) Shipwreck | Milwaukee | Site | 2021 |
| Town of Milwaukee Town Hall | Glendale | Building | 1986 |
| Trimborn Farm | Greendale | Building | 1980 |
| Trinity Evangelical Lutheran Church | Milwaukee | Building | 1979 |
| Tripoli Temple | Milwaukee | Building | 1986 |
| Turner Hall NHL | Milwaukee | Building | 1977 |
| Uihlein, Herman, House | Whitefish Bay | Building | 1983 |
| Ullius, Fred W., Jr., House | Whitefish Bay | Building | 1987 |
| Underwriters Exchange Building | Milwaukee | Building | 2023 |
| Van Altena, William, House | Whitefish Bay | Building | 1985 |
| Van Devan, G. B., House | Whitefish Bay | Building | 1985 |
| Wadhams Gas Station | West Allis | Building | 2004 |
| Walker's Point Historic District | Milwaukee | District | 1978 |
| Walker, Harry B., House | Milwaukee | Building | 1986 |
| Ward Memorial Hall | Wood | Building | 1984 |
| Washington Highlands Historic District | Wauwatosa | District | 1989 |
| Wauwatosa Arcade Building | Wauwatosa | Building | 1997 |
| Wauwatosa Avenue Residential Historic District | Wauwatosa | District | 2012 |
| Wauwatosa Cemetery Chapel | Wauwatosa | Building | 2023 |
| Wauwatosa Woman's Club Clubhouse | Wauwatosa | Building | 1998 |
| West Allis Post Office | West Allis | Building | 2001 |
| West Center-North 32nd Industrial Historic District | Milwaukee | District | 2020 |
| West Mitchell Street Commercial Historic District | Milwaukee | District | 2018 |
| West Side Commercial Historic District | Milwaukee | District | 2000 |
| West St. Paul Avenue Industrial Historic District | Milwaukee | District | 2018 |
| West Washington-North Hi-Mount Boulevards Historic District | Milwaukee | District | 1994 |
| Williams, Frank J., House | Whitefish Bay | Building | 1985 |
| Wisconsin Consistory Building | Milwaukee | Building | 1994 |
| Wisconsin Leather Company Building | Milwaukee | Building | 2005 |
| Woman's Club of Wisconsin | Milwaukee | Building | 1982 |