Flag Ratio: 3:5
The Oregon Flag bears upon its obverse the state seal supported by thirty-three stars, the words "State of Oregon", and the year "1859". On the reverse side is borne a figure of a beaver.
It is generally rare for any flag to have differing imagery on its two sides, and the Oregon flag is the only current state flag in the United States that has this characteristic, while Paraguay is the only current recognized nation whose flag has a differing obverse and reverse.
Flags of the US States:
Alabama - Alaska - Arizona - Arkansas - California - Colorado - Connecticut - Delaware - Florida - Georgia - Hawaii - Idaho - Illinois - Indiana - Iowa - Kansas - Kentucky - Louisiana - Maine - Maryland - Massachusetts - Michigan - Minnesota - Mississippi - Missouri - Montana - Nebraska - Nevada - New Hampshire - New Jersey - New Mexico - New York - North Carolina - North Dakota - Ohio - Oklahoma - Oregon - Pennsylvania - Rhode Island - South Carlolina - South Dakota - Tennessee - Texas - Utah - Vermont - Virginia - Washington - West Virginia - Wisconsin - Wyoming
District of Coumbia