South Dakota is dominated by the Black Hills, Mount Rushmore National Memorial, and the badlands of the Pine Ridge Indian Reservation, home to the Oglala Lakota Sioux.
Geography & climate
South Dakota lies in the Midwest of the United States, set at approximately 44.5°N, 100°W and falling within a temperate climate band. The state covers around 199,729 km² of land, with topography that runs from coastal lowlands and river basins to interior plains and (where present) mountain ranges. Local weather, growing seasons and outdoor recreation in South Dakota all flow from this geographic profile.
Capital, principal city & population
The capital of South Dakota is Pierre, where the legislature, governor’s office and state supreme court are based. The largest city by population is Sioux Falls, often the economic and cultural anchor of the state. Total population sits at around 910K, distributed across metropolitan areas, smaller cities, and rural counties — each with its own dialect, demographics and economic character.
Statehood & history
South Dakota was admitted to the Union in 1889 as the 40th state. The path to admission typically passed through territorial status, an enabling act of Congress and the drafting of a state constitution. Each generation since has added its layer to the state’s political and cultural identity — from frontier settlement and industrial expansion to the civic and demographic shifts of the modern era.
Symbols & emblems
South Dakota is nicknamed “Mount Rushmore State”, with the state motto Under God the people rule. The state seal, flag and coat of arms each carry historic meaning, often referencing founding settlers, native communities, agricultural roots or pivotal episodes of state history. State legislatures have additionally adopted official symbols — a state bird, flower, tree, song, fossil and more — chosen by lawmakers (and sometimes by schoolchildren) to celebrate distinctive elements of the state’s natural and cultural heritage.
Economy & industry
The economy of South Dakota is shaped by its geography, infrastructure and population centres. Major sectors typically span agriculture, manufacturing, energy or natural resources, services, tourism and (in metropolitan corridors) finance and technology. Federal facilities, military bases and research institutions can also be substantial regional employers in South Dakota.
Travel, food & culture
For visitors, South Dakota offers a mix of urban culture (museums, music venues, sports teams, cuisine) and outdoor experience (state parks, trails, coastline or mountains, depending on the geography). Regional foodways, festivals and dialects make travel between counties feel meaningfully different — even short drives across South Dakota can shift the cultural landscape noticeably.
By the numbers
Sort or filter the table to find the values you need at a glance.
| Field | Value | Note |
|---|---|---|
| Abbreviation | SD | two-letter postal code |
| Capital | Pierre | — |
| Largest city | Sioux Falls | — |
| US region | Midwest | — |
| Population | 910K | people |
| Area | 199,729 | km² |
| Statehood | 1889 | year admitted |
| Admission order | 40 | order joining the Union |
| Nickname | Mount Rushmore State | — |
| Motto | Under God the people rule | — |
| Latitude | 44.5 | degrees |
| Longitude | -100 | degrees |
Did you know?
Mount Rushmore was carved between 1927 and 1941, with each presidential face standing 18 m tall — Lincoln's nose alone is 6 m long.
