Grand Isle County, Vermont

Founding: 1805 (declared in 1802)
Parent counties: Chittenden and Franklin

Namesake: Grand Isle, the largest island in Lake Champlain
Seat: North Hero (1805–)

Land area: 82 square miles

Population (2020): 7,293

Population (historic): 3,445 (1810); 3,883 (1840); 4,082 (1870); 4,462 (1900); 3,944 (1930)

Periods of population growth: pre-1810–1860; 1870s; 1890s; 1910–1930; 1960–2020

Subdivisions: One village; five towns

National Register listings: Ten

Pre-1940 residences (estimated): 949 (18.2%)
Pre-1940 housing survival rate: 72.2%
Pre-1860 housing survival rate (1940): 36.6%

Farm housing in disrepair (1950): 9%

Nonfarm housing in disrepair (1950): 9.2%

Average farmhouse value (1930): $2,518
Average outbuilding value (1930): $2,232
Average farmhouse size (1940): 6.9 rooms
Number of farms (1920): 501
Average farm size (1920): 66.1 acres
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North Hero

Namesake: North Hero Island

Founding: 1817 (post office)

Population (2020): 939

Population (historic): 125 (1790); 638 (1830); 601 (1870); 712 (1900); 485 (1930)

Periods of population growth: pre-1790–1810; 1820–1850; 1860–1880; 1890s; 1960–2000; 2010s
Pre-1940 residences (estimated): 192 (18.4%)
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Outstanding Buildings

1. *Henry Reynolds House (c. 1845). 119 Alburgh Springs Road. Alburgh. Greek Revival.
2. *William Lyman House (c. 1810). Border Road and United States–Canada border. Alburgh. Federal. Razed.
3. *Frederick Hazen House (1795). 32 Center Bay Road. Alburgh. Federal.
4. *Mott House (1823). 748 South Main Street. Alburgh. Federal.
5. *William Sowles House (c. 1830). 112 State Route 78. Alburgh. Federal.
6. *Alburgh Town Hall (c. 1830). 2406 US Highway 2. Alburgh.
7. *Joseph Mott House (1825). 2226 West Shore Road. Alburgh. Federal.
8. *Island Villa (1901–1902). 34 East Shore Road. Grand Isle. Second Empire.
9. *Francis Childs House (c. 1850). 397 Raewyn Lane. Grand Isle. Greek Revival.
10. *William Brown House (c. 1870). 28 Simms Point Road. Grand Isle. Italianate.
11. *Elisha Boardman House (1824). 54 West Shore Road. Grand Isle. Federal.
12. *John Knight House (1845). 33 Knight's Point Road. North Hero. Greek Revival.
13. *Joel Allen Farm (1832). 3381 US Highway 2. North Hero. Federal.
14. *George Phelps House (c. 1820). 3 Cavendish Cove Road. South Hero. Federal.