This image of the South Dakota flag is in the Public Domain and can be used freely. If you use it on a webpage, a link to http://ourworldflags.com/South Dakota would be very much appreciated.
The flag of South Dakota
The original Flag of South Dakota consisted of a dominant sun
encircled by the text "South Dakota" and "The Sunshine State".
Until 1963, the state flag of South Dakota had a different design on
each side. One featured the state seal, the other a golden sun. The
1963 legislation combined the two designs into one, which now appears
on both sides of the flag.
The flag of South Dakota consists of the state seal surrounded by rays
on a blue field. Around those are the words: "South Dakota - The Mount
Rushmore State." In 1992, this was changed from "Sunshine State,"
which is more often used to describe the state of Florida.
The flag of South Dakota consists of a light blue base with the state
seal on top of the yellow rays of the sun. 'South Dakota the Mount
Rushmore State' is written in yellow and the words encircle the sun.
This flag of South Dakota is intended for representational purposes
and no claim to technical accuracy is made. Click on the link above
to read the terms for use of this South Dakota flag on your web
page.
The state flag of South Dakota features the state seal on a blazing
sun in the center against a field of sky blue. The words South Dakota
are above the seal and the state nickname appears below (The Mount
Rushmore State).