The state seal in colour on a sky-blue field, surrounded by gold rays and the words "SOUTH DAKOTA" arching above and "THE MOUNT RUSHMORE STATE" below.
The design
The Flag of South Dakota is a national emblem rendered in the colours and proportions defined by the country’s flag law. Its official aspect ratio is 3:5, the height-to-length ratio that fixes how the flag should be cut and flown. The colour scheme uses sky blue, gold, white, brown, green, with each shade specified to particular Pantone or RGB values for official reproduction.
Colour palette
| Colour | Name | Common symbolism |
|---|---|---|
| Sky blue | sky blue | A nationally significant colour for this flag — see the symbolism section below for the country-specific meaning. |
| Gold | gold | Stands in for sunlight, mineral wealth or sovereign authority. |
| White | white | Commonly represents peace, purity, honesty or snow-capped landscapes. |
| Brown | brown | Suggests soil, indigenous heritage or the working land. |
| Green | green | Tends to evoke land, agriculture, hope, Islam or the natural environment. |
Symbolism & heraldry
The seal shows farmland, livestock, a steamboat, a smelting furnace, and rolling hills — agriculture, ranching, river trade, and mining. The 1909 phrase "The Sunshine State" was changed to "The Mount Rushmore State" in 1992 — South Dakota now actively distinguishes itself from Florida's informal "Sunshine State" claim.
Heraldic elements on the Flag of South Dakota — bands, charges, emblems or stars — each carry meaning agreed at the moment of the flag’s adoption. Re-readings happen across generations: a colour or a symbol that began with one meaning often picks up further layers as the country’s history unfolds.
Adoption & history
The current flag was adopted in 1909. Earlier banners flown by Flag of South Dakota reflected the politics of their day; each redesign typically marked a moment of independence, regime change or constitutional reform. The current flag was chosen, debated and codified through the country’s official channels and is now protected by flag law.
Etiquette & protocol
The Flag of South Dakota should be flown with respect: never allowed to touch the ground, never used as drapery for ceremonies it was not made for, and lowered or removed at sundown unless illuminated. When flown alongside other national flags, it takes precedence on home soil and is hoisted first and lowered last. On days of national mourning, the flag is flown at half-mast in line with directives from the head of state. These conventions are common to most nations and are usually written into the flag’s founding statute.
Specifications
| Field | Value | Note |
|---|---|---|
| Country | Flag of South Dakota | — |
| Continent | North America | — |
| ISO alpha-2 | 2-letter code | |
| ISO alpha-3 | 3-letter code | |
| Adopted | 1909 | year of current design |
| Proportion | 3:5 | height : length |
| Colours | sky blue, gold, white, brown, green | — |
| Designer | — | |
| Emoji | Unicode codepoint sequence |
Did you know?
South Dakota's nickname on the flag was changed in 1992 from "The Sunshine State" to "The Mount Rushmore State" — a direct response to growing tourist confusion with Florida.
