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Charles Mix County

South Dakota · Public K-12

Charles Mix County is one of South Dakota's public-school counties, with 14 campuses serving about 1,966 students (7 elementary, 3 middle, and 3 high). Median household income in the county is roughly $64,038.

7-year change in Charles Mix County

SY 2017-18 vs SY 2024-25
Total enrollment
1,966
+163 (+9%) vs SY 2017-18
School count
14
0 (0%) vs SY 2017-18
Source: NCES Common Core of Data, enrollment-weighted demographic averages
Schools
14
5 districts
Enrollment
1,966
NCES CCD
Median income
$64,038
Below South Dakota avg
Free/reduced lunch
80.5%
Above South Dakota avg
Elementary
7
920 students
Middle
3
428 students
High
3
398 students
Combined / other
1
220 students
LARGEST DISTRICT
Wagner Community School District 11-4
919 students · 5 districts in Charles Mix County

County vs. school enrollment demographics

Left bar is the racial makeup of Charles Mix County residents (Census ACS 5-year). Right bar is the enrollment-weighted makeup of public schools in the county (NCES CCD). NCES systematically under-reports Hispanic, Pacific Islander, and Native American enrollment for many schools; where the resident share is meaningful but the reported school share is zero, we mark the school bar "not reported".

County residents
White
64%
Hispanic
3%
Black
0%
Asian
1%
Two or more
7%
Native American
28%
Pacific Islander
0%
School enrollment
White
41%
Hispanic
2%
Black
0%
Asian
0%
Two or more
9%
Native American
47%
Pacific Islander
0%
Bachelor's+
25.7%
adults 25+
Poverty rate
15.5%
ACS 5-year
Unemployment
5.8%
civilian labor
Median age
36
30.7% under 18

Test scores in Charles Mix County

Latest 2024-25 ELA proficiency, 6 schools ranked. South Dakota state average: 50.4%.

See all 6 schools in Charles Mix County ranked by score →

All schools (14)

LargestA-ZTop rated
NameCityLevelGradesEnrollmentRating
Wagner Elementary - 02WagnerElementaryKG-04333·
Wagner Middle School - 03WagnerMiddle05-08283·
Platte - Geddes Elementary - 02PlatteElementaryKG-05230·
Marty Indian SchoolMartyCombinedKG-12220·
Wagner High School - 01WagnerHigh09-12201·
Andes Central Elementary - 02Lake AndesElementaryPK-05184·
Platte - Geddes High School - 01PlatteHigh09-12132·
Early Learning Center - 04WagnerElementaryPK-PK102·
Platte - Geddes Jr. High - 03PlatteMiddle06-0894·
Andes Central High School - 01Lake AndesHigh09-1265·
Andes Central Middle School - 04Lake AndesMiddle06-0851·
Clearfield Colony Elementary - 07DelmontElementaryKG-0826·
Lakeview Colony Elementary - 05Lake AndesElementaryKG-0823·
Platte Colony Elementary - 10AcademyElementaryKG-0822·

Cities in Charles Mix County

Lake Andes4 schoolsWagner4 schoolsPlatte3 schoolsAcademy1 schoolDelmont1 schoolMarty1 school

About Charles Mix County

Charles Mix County is a compact county of about 9,281 residents in South Dakota. Its public-school system hosts approximately 1,966 students across 14 schools.

Stepping back, census numbers show typical household earnings sit around $64,038, 26% of adults hold a bachelor's degree or higher, and roughly 16% of residents live below the federal poverty line. That income level is 9% meaningfully below the South Dakota median.

On the school-mix side, Charles Mix County consists of 7 elementary schools (920 students), 3 middle schools (428), 3 high schools (398), and 1 combined or other schools.

Wagner Community School District 11-4 dominates the local landscape, accounting for roughly 919 students on its own.

Five-year track record. Across the same 7-year window, public-school enrollment expanded 9%: 1,803 students in SY 2017-18 versus 1,966 in SY 2024-25.

On this page, the community for Charles Mix County discusses school events, board meetings, and seasonal calendars. Parents, students, and educators in the area can post or comment.

Frequently asked questions

How many public schools are in Charles Mix County?
Charles Mix County, South Dakota has 14 public K-12 schools serving approximately 1,966 students.
How many high schools are in Charles Mix County?
Charles Mix County, South Dakota has 3 public high schools, serving approximately 398 students.
How many middle schools are in Charles Mix County?
Charles Mix County, South Dakota has 3 public middle schools, serving approximately 428 students.
How many elementary schools are in Charles Mix County?
Charles Mix County, South Dakota has 7 public elementary schools, serving approximately 920 students.
What is the largest school district in Charles Mix County?
Wagner Community School District 11-4 is the largest school district in Charles Mix County, serving approximately 919 students. The county contains 5 school districts overall.
What is the population of Charles Mix County?
Charles Mix County, South Dakota has a population of approximately 9,281, with a median age of 36. About 30.7% of residents are under 18.
What is the median household income in Charles Mix County?
Median household income in Charles Mix County is $64,038, below the South Dakota average of $70,004. About 15.5% of residents live below the federal poverty line.
How educated are residents of Charles Mix County?
Approximately 25.7% of adults 25 and older in Charles Mix County hold a bachelor's degree or higher, according to the Census ACS 5-year estimate.
What share of students in Charles Mix County qualify for free or reduced lunch?
Roughly 80.5% of students in Charles Mix County public schools qualify for free or reduced-price lunch, a common proxy for low-income enrollment. This is higher than the South Dakota county average of 42.3%.
What is the student-teacher ratio in Charles Mix County schools?
Across Charles Mix County public schools, the enrollment-weighted student-teacher ratio is approximately 11.5 to 1.

Charles Mix County school rankings

Largest schoolsAll rankings →
DATA · Census ACS 5-year · NCES Common Core of Data