High School Graduate (% of Over 25) by Zip Code (ZCTA5) — South Dakota

NOTE: Gray indicates insufficient data or a suppressed estimate.

Most of South Dakota's zip codes exhibit high school graduation rates above 85%, with the highest concentrations of near-100% rates appearing in the yellow-shaded agricultural regions of central and north-central South Dakota. A stark contrast emerges in the southwestern portion of the state and the southeastern corner, where several zip codes—likely corresponding to Native American reservations including Pine Ridge and Rosebud—drop to graduation rates between 40% and 70%, represented by deep teal and purple hues. Scattered pockets of moderately lower attainment (75–85%) also appear around urban centers such as Sioux Falls and Rapid City, potentially reflecting more diverse demographic compositions in those metro areas.

Data: U.S. Census Bureau, 2023 ACS

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