Ozaukee County, Wisconsin

Founding: 1853
Parent county: Washington

Namesake: The Ojibwe word for the Sauk people
Seat: Port Washington (1853–)

Land area: 233 square miles

Population (2020): 91,503

Population (historic): 15,682 (1860); 15,461 (1880); 16,363 (1900); 17,394 (1930)

Periods of population growth: pre-1860; 1890–1910; 1920–2020

Subdivisions: Three cities; five villages; one CDP; six towns

Pre-1940 residences (estimated): 4,367 (11.7%)
Pre-1940 housing survival rate: 79.6%
Pre-1860 housing survival rate (1940): 9%

Farm housing in disrepair (1950): 2.1%

Average farmhouse value (1930): $2,732
Average outbuilding value (1930): $2,637
Average farmhouse size (1940): 7.3 rooms
Number of farms (1920): 1,727
Average farm size (1920): 62.4 acres
Sources of settlement: Germany, Luxembourg, Belgium, and New York
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Port Washington

Namesake: George Washington, U.S. president

Founding: 1835 (platting); 1849 (post office); 1882 (incorporation)

Population (2020): 12,353

Population (historic): 1,386 (1880); 3,010 (1900); 3,693 (1930)

Periods of population growth: pre-1880–1910; 1920–1970; 1980–2020
Pre-1940 residences (estimated): 963 (18.4%)
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Outstanding Buildings

1. Watry House (1853). 1820 Dixie Road. Belgium.
2. Michael Toeckes Farm (c. 1890). 2585 Jay Road. Belgium. Eastlake.
3. Michael Hickey House (c. 1855). 7026 Cedar Creek Road. Cedarburg. Razed.
4. Eilert Stallmann House (1865). 5314 Columbia Road. Cedarburg. Italianate.
5. Frederick Behrens Farm (c. 1885). 1587 Road I. Cedarburg. Italianate.
6. Charles Hintze House (1869). 189 Green Bay Road. Cedarburg. Italianate.
7. Concordia Mill (1853). 252 Green Bay Road. Cedarburg. Greek Revival.
8. Edward Janssen House (1854). 5060 Hamilton Road. Cedarburg. Greek Revival.
9. Nicolaus Ludowissi Farm (c. 1890). 2946 Jay Road. Fredonia. Queen Anne.
10. Johann Hennings Farm (1872). 1143 Lakefield Road. Grafton.
11. Henry Hennings House (1884). 754 Port Washington Road. Grafton.
12. Thomas Irwin Farm (c. 1870). 1235 East Sauk Road. Grafton. Italianate.
13. Trinity Lutheran Church (1902). 10001 Cedarburg Road. Mequon. Gothic Revival.
14. Edwin Nieman House (1928). 13030 Cedarburg Road. Mequon. Tudor Revival.
15. Jonathan Clark House (1848). 13615 Cedarburg Road. Mequon.
16. Zinke House (1897/1910s). 828 Mequon Road. Mequon. Queen Anne.
17. Ludwig Hilgendorf Farm (c. 1845). 11401 Mequon Road. Mequon.
18. John O'Brien Farm (1846). 12510 Wauwatosa Road. Mequon.
19. John Reichert House (c. 1885). 14053 Wauwatosa Road. Mequon. Stick.
20. Philipp Schumacher House (c. 1875). 2595 Road I. Saukville.

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