Marin County, California

Founding: 1850
Parent county: Unorganized territory

Namesake: Unknown
Seat: San Rafael (1850–)

Land area: 520 square miles

Population (2020): 262,321

Population (historic): 3,334 (1860); 11,324 (1880); 15,702 (1900); 41,648 (1930)

Periods of population growth: pre-1860–2020

Subdivisions: 11 cities; 21 CDPs

National Register listings: 52

Pre-1940 residences (estimated): 14,897 (13.2%)
Pre-1940 housing survival rate: 83.1%
Pre-1860 housing survival rate (1940): 1.9%

Farm housing in disrepair (1950): 5.5%

Nonfarm housing in disrepair (1950): 4.8%

Average farmhouse value (1930): $1,836
Average outbuilding value (1930): $2,824
Average farmhouse size (1940): 5.3 rooms
Number of farms (1920): 718
Average farm size (1920): 122.3 acres
Sources of settlement: New York, China, Ireland, Switzerland, Portugal, Germany, and New England states
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San Rafael

Namesake: The Mission San Rafael Arcángel

Founding: 1817 (mission's founding); 1851 (post office); 1874 (incorporation)

Population (2020): 61,271

Population (historic): 841 (1870); 3,290 (1890); 5,934 (1910); 8,022 (1930)

Periods of population growth: pre-1870–1910; 1920–2020
Pre-1940 residences (estimated): 2,406 (10.1%)
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Outstanding Buildings

1. Charles Martin Ranch (c. 1880). 5105 Chileno Valley Road. Italianate.
2. Orton Hubbell Farm (c. 1880). 2400 Fallon–Two Rock Road. Italianate.
3. *Benjamin Lyford House (1876). 376 Greenwood Beach Road. Second Empire.
4. *Erskine McNear House (1906). 121 Knight Drive. Craftsman.
5. *Dixie School (1864). 2255 Las Gallinas Avenue. Italianate.
6. Machetti Ranch (c. 1875). 3949 Marshall–Petaluma Road. Italianate.
7. Nicasio School (1871). 5249 Nicasio Valley Road. Italianate.
8. Jeremiah Blake Ranch (1864). 22888 Shoreline Highway. Greek Revival.