Independent Post Offices - O

PO	County	Dates	Comments
OAKLEY	Cassia	1876-1879
		1880-Date
OASIS	Teton	1896-1910
OBSIDIAN	Custer	1918-1976
OCKONOOK	Boundary	1893-1896	renamed PORTHILL
		1897-1900	was PORTHILL
			renamed PORTHILL
OHADI	Idaho	1898-1899
OLA	Gem	1882-Date
OLD MISSION	Kootenai	1884-1887
		1888-1894
OMEGA	Caribou	1885-1887
ONEIDA	Bannock	1878-1912	renamed ARIMO
ORA	Fremont	1896-1910
ORCHARD	Ada	1893-1911
		1921-1967
OREANA	Owyhee	1885-1982
ORO	Owyhee	1866-1869
ORO FINO	Clearwater	1862-1864
OROFINO	Clearwater	1898-Date
OROGRANDE	Idaho	1902-1957
OSBORNE	Shoshone	1915-1920
		1922-1925	renamed OSBURN
OSBURN	Shoshone	1887-1914
		1925-Date	was OSBORNE
OSWEGO	Camas	1889-1895
OTIS	Bingham	1899-1911	renamed STERLING
OVID	Bear Lake	1871-1991
OWINZA	Lincoln	1916-1918
		1923-1924
OWSLEY	Jefferson	1910-1912
		1913-1916
OWYHEE	Ada	1883-1884	renamed KUNA
		1910-1919
OXFORD	Franklin	1870-1959
OZONE	Bonneville	1911-1925

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Contributed 2021 Oct 05 by Mark Metkin

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