# National Register of Historic Places listings in Ozaukee County, Wisconsin

This is a list of the National Register of Historic Places listings in Ozaukee County, Wisconsin. It is intended to provide a comprehensive listing of entries in the National Register of Historic Places that are located in Ozaukee County, Wisconsin. The locations of National Register properties for which the latitude and longitude coordinates are included below may be seen in a map.
There are 42 properties and districts listed on the National Register in the county.
This National Park Service list is complete through NPS recent listings posted February 21, 2025.
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## Current listings

| | Name on the Register | Image | Date listed | Location | City or town | Description |
| 1 | Bigelow School | Bigelow School | July 27, 2000 (#00000851) | 4228 W. Bonniwell Rd. 43°15′57″N 87°57′42″W﻿ / ﻿43.265833°N 87.961667°W﻿ / 43.265833; -87.961667﻿ (Bigelow School) | Mequon | Brick once-rural one-room school built in 1929, designed by William Redden in Classical Revival style. Served as a school until consolidation in the 1960s. |
| 2 | Harry W. Bolens House | Harry W. Bolens House | August 25, 1983 (#83003407) | 842 W. Grand Ave. 43°23′14″N 87°53′14″W﻿ / ﻿43.387222°N 87.887222°W﻿ / 43.387222; -87.887222﻿ (Harry W. Bolens House) | Port Washington | 2.5-story Queen Anne-style home built in 1900 for Bolens, newspaper-man, inventor, manufacturer (of printing presses, gas engines, two-cylinder automobile and garden tractors), Port Washington mayor and state senator. |
| 3 | Cedarburg Mill | Cedarburg Mill More images | May 8, 1974 (#74000115) | 215 E. Columbia Ave. 43°17′48″N 87°59′10″W﻿ / ﻿43.296667°N 87.986111°W﻿ / 43.296667; -87.986111﻿ (Cedarburg Mill) | Cedarburg | 5-story gristmill with walls of local, high-quality limestone, built in 1855 by Frederick Hilgen and William Schroeder with monitor roofs and Greek Revival-style cornice returns. |
| 4 | Cedarburg Woolen Co. Worsted Mill | Cedarburg Woolen Co. Worsted Mill | June 30, 1983 (#83003408) | 1350 14th Ave. 43°19′03″N 87°56′57″W﻿ / ﻿43.3175°N 87.949167°W﻿ / 43.3175; -87.949167﻿ (Cedarburg Woolen Co. Worsted Mill) | Grafton | Mill that made worsted yarn, combing, spinning, and dyeing wool from 1880 to 1980. The original 1880 part is 3 stories with limestone walls and a 4-story tower. |
| 5 | Jonathan Clark House | Jonathan Clark House | June 2, 1982 (#82000692) | 13615 N. Cedarburg Rd. 43°15′57″N 87°59′23″W﻿ / ﻿43.265833°N 87.989722°W﻿ / 43.265833; -87.989722﻿ (Jonathan Clark House) | Mequon | 1.5-story house with fieldstone walls and limestone front, built in simple Greek Revival style for Vermonter Clark in 1848. |
| 6 | Columbia Historic District | Columbia Historic District | January 22, 1992 (#91001980) | Roughly bounded by Cedar Cr., Highland Dr. and Bridge Rd. 43°17′59″N 87°58′57″W﻿ / ﻿43.299722°N 87.9825°W﻿ / 43.299722; -87.9825﻿ (Columbia Historic District) | Cedarburg | Residential neighborhood NE of the downtown, including the 1860 limestone tinsmith shop/Gleitzmann Cooperage, the 1865 Greek Revival limestone Gleitzmann house, the 1869 Italianate Hilgen house, the 1889 Queen Anne Boerner house, the 1891 Gothic Revival Trinity Lutheran Church, the 1908 Craftsman Hilgen house, the 1925 Schaefer bungalow, and the 1931 Tudor Revival Scheunemann house. |
| 7 | Concordia Mill | Concordia Mill More images | April 26, 1974 (#74000116) | 252 Green Bay Rd. 43°17′05″N 87°58′13″W﻿ / ﻿43.284722°N 87.970278°W﻿ / 43.284722; -87.970278﻿ (Concordia Mill) | Cedarburg | 4-story gristmill with walls of local limestone and a gambrel roof, built on Cedar Creek by Edward Janssen in 1853. |
| 8 | Covered Bridge | Covered Bridge More images | March 14, 1973 (#73000092) | 1 Mi. N of Five Corners over Cedar Creek 43°20′16″N 88°00′16″W﻿ / ﻿43.337778°N 88.004444°W﻿ / 43.337778; -88.004444﻿ (Covered Bridge) | Cedarburg | 180-foot bridge over Cedar Creek, built with a latticed pine truss frame covered with board and batten. The last remaining original covered bridge in Wisconsin. Built 1876, retired 1962. |
| 9 | Isham Day House | Isham Day House | December 28, 2000 (#00001558) | 11312 N. Cedarburg Rd. 43°13′25″N 87°59′00″W﻿ / ﻿43.223611°N 87.983333°W﻿ / 43.223611; -87.983333﻿ (Isham Day House) | Mequon | One of the oldest known buildings in Mequon, the 1.5 story cottage was built by Yankee Isham Day in 1839, before the German influx. The construction is unusual, with walls framed in vertical sawn timbers joined by mortise and tenon and infilled with brick. |
| 10 | Edward Dodge House | Edward Dodge House | July 24, 1975 (#75000074) | 126 E. Grand Ave. 43°23′16″N 87°52′10″W﻿ / ﻿43.387778°N 87.869444°W﻿ / 43.387778; -87.869444﻿ (Edward Dodge House) | Port Washington | 1.5-story Greek Revival-styled home built in 1848 and faced rather whimsically with small cobblestones from the Lake Michigan beach, arranged in colored bands. Also known as Pebble House. |
| 11 | Grafton Flour Mill | Grafton Flour Mill More images | June 30, 1983 (#83003409) | 1300 14th Ave. 43°19′06″N 87°56′58″W﻿ / ﻿43.318333°N 87.949444°W﻿ / 43.318333; -87.949444﻿ (Grafton Flour Mill) | Grafton | Mill on the Milwaukee River, originally built by Yankee farmers in 1846 as a flour mill. Produced "White Lily" flour in the 1880s. Bought by Badger Worsted Mills during the Depression. |
| 12 | Green Bay Road Historic District | Green Bay Road Historic District | November 26, 2004 (#04001278) | 149-195 Green Bay Rd. 43°13′58″N 87°58′56″W﻿ / ﻿43.232778°N 87.982222°W﻿ / 43.232778; -87.982222﻿ (Green Bay Road Historic District) | Thiensville | Cluster of 11 parcels on the west side of Green Bay Road, which the government built in the 1830s to connect Milwaukee with Fort Howard. Structures include the 1884 Queen Anne-styled Hoeft house, the 1889 Gierach Blacksmith/Grocery Shop, the 1909 Queen Anne Staudy house, and the 1929 Hadler Harness and Printing Shop. |
| 13 | Hamilton Historic District | Hamilton Historic District More images | July 1, 1976 (#76000070) | Hamilton and Green Bay Rds. 43°17′00″N 87°58′17″W﻿ / ﻿43.283333°N 87.971389°W﻿ / 43.283333; -87.971389﻿ (Hamilton Historic District) | Cedarburg | The hamlet of Hamilton was once the bustling first stage stop from Milwaukee on the Green Bay Road, but development largely paused when the railroad bypassed it. Buildings include the 1847 Ranken-Schleifer house, the 1854 Greek Revival Janssen house, the ruins of the 1860 Lindner store, the 1861 Hentschel General Store, and the 1867 Italianate Turn Halle, many of which are stone. |
| 14 | Hilgen and Wittenberg Woolen Mill | Hilgen and Wittenberg Woolen Mill | December 22, 1978 (#78000124) | N70 W6340 Bridge Rd. 43°18′05″N 87°59′18″W﻿ / ﻿43.301389°N 87.988333°W﻿ / 43.301389; -87.988333﻿ (Hilgen and Wittenberg Woolen Mill) | Cedarburg | Well-preserved mill complex on Cedar Creek, including the 1865 Greek Revival-styled mill office and store, the main mill building, the 1893 dye house, and the 1896 powerhouses. Produced yarns, flannels, blankets and mackinaws to substitute for cotton products after the Civil War, operating until 1968. |
| 15 | Hoffman House Hotel | Hoffman House Hotel | March 1, 1984 (#84003773) | 200 W. Grand Ave. 43°23′16″N 87°52′22″W﻿ / ﻿43.387778°N 87.872778°W﻿ / 43.387778; -87.872778﻿ (Hoffman House Hotel) | Port Washington | 3-story Queen Anne-styled hotel with corner oriel. Completed in 1901, it was one of the city's four first-class hotels during Port's boom period. |
| 16 | Island City (schooner) Shipwreck | Upload image | November 10, 2011 (#11000810) | 9 miles southeast of Port Washington in Lake Michigan 43°14′18″N 87°50′43″W﻿ / ﻿43.238333°N 87.845167°W﻿ / 43.238333; -87.845167﻿ (Island City (schooner) Shipwreck) | Mequon vicinity | 81-foot lakeshoring schooner built by Peter Perry on Harsens Island, Michigan in 1859. Sank in a storm in April 1894, on her way from Ludington to Milwaukee, with two men lost. |
| 17 | J.M. Allmendinger (Steambarge) Shipwreck | J.M. Allmendinger (Steambarge) Shipwreck More images | October 11, 2018 (#100003012) | 2.5 mi. SSE of Concordia U. in Lake Michigan | Mequon | 104 foot wood-hulled steam-screw barge built in 1883 by Albert Burgoyne at Benton Harbor. Hauled mostly lumber until November of 1895, when she ran aground during a gale and broke up. |
| 18 | William F. Jahn Farmstead | William F. Jahn Farmstead | August 10, 2000 (#00000978) | 12112-12116 N. Wauwatosa Rd. 43°14′18″N 88°00′11″W﻿ / ﻿43.238335°N 88.003048°W﻿ / 43.238335; -88.003048﻿ (William F. Jahn Farmstead) | Mequon | Now-domesticated farm, including 1855 Greek Revival-styled farmhouse, an 1855 summer kitchen, an 1855 basement barn, and an 1861-1880 pig barn, now remodeled as a home. Jahn was an immigrant from Saxony who farmed, surveyed, and served in various local public offices. |
| 19 | Kendall Cabinet Shop | Kendall Cabinet Shop | November 29, 2016 (#14000887) | W4128 Mill St. 43°28′17″N 87°59′31″W﻿ / ﻿43.471410°N 87.991942°W﻿ / 43.471410; -87.991942﻿ (Kendall Cabinet Shop) | Waubeka | 2-story clapboard industrial building built in 1863. The building was turned into a factory to manufacture pearl buttons from the shells of freshwater mussels in 1892 and operated into the first decade of the 20th century. At the button factory was Waubeka's largest employer. |
| 20 | Main Street Historic District | Main Street Historic District | November 26, 2004 (#04001279) | 101 N. Main St., 105-130 S. Main St., 101 Green Bay Rd. & 107 W. Buntrock Ave. 43°13′49″N 87°59′02″W﻿ / ﻿43.230278°N 87.983889°W﻿ / 43.230278; -87.983889﻿ (Main Street Historic District) | Thiensville | Ten contributing buildings, including the 1895 Queen Anne-styled Commercial House Hotel, the 1898 Queen Anne Maas-Bublitz house, the 1914 Village Hall and Fire Department with its hose-drying tower, the 1915 American Foursquare Reimer house, the 1920 Craftsman-influenced Bublitz Grocery, and the 1927 20th Century Commercial-styled Thiensville Recreation Parlor. |
| 21 | Mequon Town Hall and Fire Station Complex | Mequon Town Hall and Fire Station Complex | July 18, 2000 (#00000779) | 11333 N. Cedarburg Rd. 43°13′25″N 87°59′04″W﻿ / ﻿43.223611°N 87.984444°W﻿ / 43.223611; -87.984444﻿ (Mequon Town Hall and Fire Station Complex) | Mequon | 1937 Art Deco building complex designed by Satre and Senescall of Sheboygan, including pool house and swimming pool built with WPA help. |
| 22 | Milwaukee Falls Lime Company | Milwaukee Falls Lime Company | January 27, 2012 (#11001071) | 2020 Green Bay Rd 43°18′17″N 87°57′24″W﻿ / ﻿43.30476°N 87.956565°W﻿ / 43.30476; -87.956565﻿ (Milwaukee Falls Lime Company) | Grafton | Remnants of lime production plant from the 1890s, including limestone quarry, kilns, and dam. |
| 23 | NIAGARA (steamer) | NIAGARA (steamer) More images | December 16, 1996 (#96001456) | one mile off shore 43°29′19″N 87°46′30″W﻿ / ﻿43.488611°N 87.775°W﻿ / 43.488611; -87.775﻿ (NIAGARA (steamer)) | Belgium | The wreck of the Niagara, a 225-foot side-wheeled steamboat built in 1846 in Buffalo. Caught fire and sank in 1856, taking the lives of 60 of its 300 passengers. |
| 24 | Edwin J. Nieman Sr. House | Edwin J. Nieman Sr. House | April 12, 1996 (#96000418) | 13030 N. Cedarburg Rd. 43°15′19″N 87°59′25″W﻿ / ﻿43.255278°N 87.990278°W﻿ / 43.255278; -87.990278﻿ (Edwin J. Nieman Sr. House) | Mequon | Elaborate Tudor Revival-styled mansion designed by Herman Bruns of Milwaukee and built in 1928 in a unit of the Fromm Bros.-Nieman fox farm - at that time the nation's largest breeder of silver foxes. |
| 25 | NORTHERNER Shipwreck (Schooner) | NORTHERNER Shipwreck (Schooner) More images | December 10, 2010 (#10001005) | 5 miles southeast of Port Washington Harbor in Lake Michigan 43°18′53″N 87°49′27″W﻿ / ﻿43.314833°N 87.824167°W﻿ / 43.314833; -87.824167﻿ (NORTHERNER Shipwreck (Schooner)) | Grafton | 81-foot lakeshoring schooner, built in 1850 by John Oades of Clayton, NY. In 1868 she was damaged while loading wood, started leaking badly, and sank off Port Ulao while being towed to Milwaukee for repair. |
| 26 | O'Brien-Peuschel Farmstead | O'Brien-Peuschel Farmstead | October 24, 2000 (#00001236) | 12510 N. Wauwatosa Rd. 43°14′43″N 88°00′10″W﻿ / ﻿43.245278°N 88.002778°W﻿ / 43.245278; -88.002778﻿ (O'Brien-Peuschel Farmstead) | Mequon | John O'Brien started the farm in 1846, building the Greek Revival-styled fieldstone farmhouse and the haybarn and granary around 1850. In 1855 German immigrants John and Henriette Pueschel bought the farm and their family farmed it for over 100 years, adding the 1874 barn, the 1900 corn crib, the 1900 well house, the 1900 outhouse and a 1910 silo. |
| 27 | Old Ozaukee County Courthouse | Old Ozaukee County Courthouse More images | December 12, 1976 (#76000071) | 109 W. Main St. 43°23′18″N 87°52′16″W﻿ / ﻿43.388333°N 87.871111°W﻿ / 43.388333; -87.871111﻿ (Old Ozaukee County Courthouse) | Port Washington | Richardsonian Romanesque-styled courthouse with 4-story tower, clad in gray-blue Cedarburg limestone, designed by Frederick Graf and built in 1902. |
| 28 | Payne Hotel | Payne Hotel | March 14, 1991 (#91000220) | 310 E. Green Bay Ave. 43°22′54″N 87°56′18″W﻿ / ﻿43.381667°N 87.938333°W﻿ / 43.381667; -87.938333﻿ (Payne Hotel) | Saukville | 1848 Greek Revival-styled stagecoach inn with a ballroom on the third floor, built by English immigrant and Saukville founder William Payne where the Dekorra Military Road (now roughly Highway 33) met the Green Bay Road. |
| 29 | Port Washington Downtown Historic District | Port Washington Downtown Historic District More images | September 8, 2000 (#00001070) | Roughly along N. Franklin St., from E Jackson St. to E Grand Ave. 43°23′22″N 87°52′07″W﻿ / ﻿43.389444°N 87.868611°W﻿ / 43.389444; -87.868611﻿ (Port Washington Downtown Historic District) | Port Washington | The old commercial downtown, including the 1855 Italianate-styled Wisconsin House Hotel, the 1857 Federal Style Nosen building, the 1891 Queen Anne Bink saloon, the 1907 Richardsonian Romanesque Zimmerman saloon, the 1909 Neoclassical First National Bank, the 1930 Art Deco Schumacher Monument Co., the 1942 Art Moderne Schanen building, and the 1954 Colonial Revival Smith Bros. seafood restaurant. |
| 30 | Port Washington Fire Engine House | Port Washington Fire Engine House | November 5, 2009 (#09000894) | 102 East Pier St. 43°23′24″N 87°52′15″W﻿ / ﻿43.389892°N 87.870911°W﻿ / 43.389892; -87.870911﻿ (Port Washington Fire Engine House) | Port Washington | Mediterranean Revival-styled fire station with red tile roof and hose drying tower. Designed by John Topzant and built in 1929. |
| 31 | Port Washington Light Station | Port Washington Light Station More images | September 29, 1999 (#99001222) | 311 E. Johnson St. 43°23′28″N 87°52′03″W﻿ / ﻿43.391111°N 87.8675°W﻿ / 43.391111; -87.8675﻿ (Port Washington Light Station) | Port Washington | Lighthouse built in 1860, where the light-keeper lived with his family. In 1934 it was remodeled into two apartments for use by the Light Service and later the Coast Guard. |
| 32 | Port Washington North Breakwater Light | Port Washington North Breakwater Light More images | December 3, 2018 (#100003160) | 550 E Jackson St. 43°23′07″N 87°51′35″W﻿ / ﻿43.3853°N 87.8597°W﻿ / 43.3853; -87.8597﻿ (Port Washington North Breakwater Light) | Port Washington | Art moderne-styled lighthouse built in 1935 with help from the WPA, as part of expanding the harbor for the Milwaukee Electric Railway & Light Co. power plant. |
| 33 | John Reichert Farmhouse | John Reichert Farmhouse | July 1, 1982 (#82000693) | 14053 N. Wauwatosa Rd. 43°16′25″N 88°00′15″W﻿ / ﻿43.273611°N 88.004167°W﻿ / 43.273611; -88.004167﻿ (John Reichert Farmhouse) | Mequon | Stick style house built around 1885, with unusual trompe-l'œil bay windows. |
| 34 | St. Mary's Roman Catholic Church | St. Mary's Roman Catholic Church More images | December 12, 1977 (#77000042) | 430 N. Johnson St. 43°23′30″N 87°52′10″W﻿ / ﻿43.391667°N 87.869444°W﻿ / 43.391667; -87.869444﻿ (St. Mary's Roman Catholic Church) | Port Washington | Gothic Revival-styled Catholic church designed by Henry Messmer and built in 1882, largely from limestone quarried 3 miles to the north. |
| 35 | St. Peter Shipwreck (Schooner) | Upload image | December 19, 2024 (#100011163) | Address Restricted | Port Washington vicinity | 90-foot wood-hulled 2-masted schooner built in 1868 by Peter Perry at New Baltimore, Michigan. Named for the builder and the patron saint of shipbuilders, she hauled staves, coal, lumber, salt, wheat, etc. around the Great Lakes, as far east as Oswego. On May 5, 1874 she left Chicago for Buffalo with a load of wheat (possibly an overload), hit stormy weather, was abandoned, and sank 35 miles northeast of Milwaukee under 450 feet of water. |
| 36 | SENATOR (steam screw) Shipwreck | SENATOR (steam screw) Shipwreck More images | April 12, 2016 (#15000738) | Address Restricted | Port Washington vicinity | 402-foot steam screw built in 1896 by the Detroit Dry Dock Company. In October 1929, heading from Milwaukee to Detroit carrying 241 (or 268?) Nash autos, she collided with the Marquette in a heavy fog and sank quickly, with 7 men lost. |
| 37 | Stony Hill School | Stony Hill School | October 8, 1976 (#76000072) | NE of Waubeka on SR 1 43°28′46″N 87°58′48″W﻿ / ﻿43.479444°N 87.98°W﻿ / 43.479444; -87.98﻿ (Stony Hill School) | Waubeka | Location of the earliest formal observance of Flag Day, by schoolteacher Bernard Cigrand, in 1885. |
| 38 | TENNIE AND LAURA (Shipwreck) | TENNIE AND LAURA (Shipwreck) More images | April 11, 2008 (#08000288) | 9 miles off shore from Port Washington 43°15′39″N 87°43′38″W﻿ / ﻿43.260833°N 87.727222°W﻿ / 43.260833; -87.727222﻿ (TENNIE AND LAURA (Shipwreck)) | Port Washington | 73-foot scow-schooner built by Gunder Jorgenson in Manitowoc in 1876. In 1903, running from Muskegon to Milwaukee under Captain John Sather with a load of lumber, she sank in a storm ten miles from her destination, with one crewman lost. |
| 39 | Frank Vocke Octagonal Barn | Frank Vocke Octagonal Barn | October 24, 2016 (#16000740) | 1901 W. Pioneer Rd. 43°16′48″N 87°56′03″W﻿ / ﻿43.280110°N 87.934098°W﻿ / 43.280110; -87.934098﻿ (Frank Vocke Octagonal Barn) | Mequon | Octagonal barn with fieldstone foundation, wood sides, and small octagonal cupola, built by Ernst Clausing in 1891. |
| 40 | Jacob Voigt House | Jacob Voigt House | September 22, 2000 (#00001164) | 11550 N. Wauwatosa Rd. 43°13′44″N 88°00′28″W﻿ / ﻿43.228889°N 88.007778°W﻿ / 43.228889; -88.007778﻿ (Jacob Voigt House) | Mequon | Farmstead of German immigrants, with an 1855 house with walls of finely laid fieldstone and a gambrel-roofed barn built in 1880. |
| 41 | Washington Avenue Historic District | Washington Avenue Historic District | January 17, 1986 (#86000218) | Roughly bounded by Elm St., Cedar Creek, Hamilton Rd., and Washington Ave. 43°18′01″N 87°59′16″W﻿ / ﻿43.300278°N 87.987778°W﻿ / 43.300278; -87.987778﻿ (Washington Avenue Historic District) | Cedarburg | Much of old downtown Cedarburg, including the 1847 Cedarburg Brewery Complex, the 1853 Greek Revival Schroeder house, the 1853 Stagecoach Inn, the 1870 Romanesque Revival St. Francis Borgia Catholic Church, the 1870 Italianate Hoehn Furniture Store, the 1873 Groth's Hardware, the 1882 Gothic Revival Immanuel Evangelical Lutheran Church, the 1885 Queen Anne-styled Weisler Hotel, the 1886 Washington House Inn, the 1894 Lincoln Public School, and the 1926 pagoda-styled Wadham's Filling Station. |
| 42 | Wayside House | Wayside House | March 17, 1982 (#82000694) | W61 N439 Washington Ave. 43°17′31″N 87°59′11″W﻿ / ﻿43.291944°N 87.986389°W﻿ / 43.291944; -87.986389﻿ (Wayside House) | Cedarburg | Brick and stone Victorian home, built starting in 1846 by German immigrant Frederick Hilgen, the "father of Cedarburg." |