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Cobb County

Georgia · Public K-12

Georgia's Cobb County runs 129 public K-12 schools between its districts, the largest being Cobb County Public Schools at 105,738 students. That works out to 78 elementary, 29 middle, and 20 high schools.

7-year change in Cobb County

SY 2017-18 vs SY 2024-25
Total enrollment
116,609
-4,963 (-4%) vs SY 2017-18
School count
129
+5 (+4%) vs SY 2017-18
% White
31%
was 36%
% Hispanic
27%
was 23%
% Black
30%
was 32%
% Asian
6%
was 5%
Source: NCES Common Core of Data, enrollment-weighted demographic averages
Schools
129
8 districts
Enrollment
116,609
NCES CCD
Median income
$102,738
Above Georgia avg
Free/reduced lunch
53.3%
Below Georgia avg
Elementary
78
50,523 students
Middle
29
26,570 students
High
20
38,664 students
Combined / other
2
852 students
LARGEST DISTRICT
Cobb County Public Schools
105,738 students · 8 districts in Cobb County

County vs. school enrollment demographics

Left bar is the racial makeup of Cobb 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
49%
Hispanic
15%
Black
27%
Asian
6%
Two or more
10%
Native American
1%
Pacific Islander
0%
School enrollment
White
31%
Hispanic
27%
Black
30%
Asian
6%
Two or more
6%
Native American
0%
Pacific Islander
0%
Bachelor's+
50.8%
adults 25+
Poverty rate
5.7%
ACS 5-year
Unemployment
4.5%
civilian labor
Median age
38
22.6% under 18

Test scores in Cobb County

Latest 2024-25 ELA proficiency, 101 schools ranked. Georgia state average: 40.1%.

See all 101 schools in Cobb County ranked by score →

All schools (129)

NameCityLevelGradesEnrollmentRating
McCleskey Middle SchoolMariettaMiddle06-08540·
Hendricks Elementary SchoolPowder SpringsElementaryPK-05538·
Sawyer Road Elementary SchoolMariettaElementaryPK-05533·
Timber Ridge Elementary SchoolMariettaElementaryPK-05529·
Hollydale Elementary SchoolMariettaElementaryPK-05526·
Big Shanty Elementary SchoolKennesawElementary03-05511·
Pine Mountain Middle SchoolKennesawMiddle06-08506·
Acworth Elementary SchoolAcworthElementary02-05499·
Park Street Elementary SchoolMariettaElementaryPK-05476·
Powers Ferry Elementary SchoolMariettaElementaryPK-05475·
Riverside Elementary SchoolMabletonElementaryPK-05471·
Hickory Hills Elementary SchoolMariettaElementaryPK-05440·
Nicholson Elementary SchoolMariettaElementaryPK-05413·
A.L. Burruss Elementary SchoolMariettaElementaryPK-05409·
Keheley Elementary SchoolMariettaElementaryPK-05393·
Milford Elementary SchoolMariettaElementaryPK-05389·
Austell Elementary SchoolAustellElementaryPK-05367·
LaBelle Elementary SchoolMariettaElementaryPK-05339·
Argyle Elementary SchoolSmyrnaElementaryPK-05333·
International Academy of SmyrnaSmyrnaElementaryKG-05328·
Marietta Center for Advanced AcademicsMariettaElementary03-05268·
Belmont Hills Elementary SchoolSmyrnaElementaryPK-05267·
McCall Primary SchoolAcworthElementaryPK-01265·
Miles Ahead Charter SchoolPowder SpringsElementaryKG-05261·
Amana Academy West AtlantaSmyrnaElementaryKG-08215·
Emily Lembeck Early Learning CenterMariettaElementaryPK-PK134·
Devereux Ackerman AcademyKennesawCombinedKG-1254·
Marietta Regional Youth Detention CenterMariettaHigh05-1218·
George W. Hartmann CenterMariettaHigh06-124·

Cities in Cobb County

Marietta60 schoolsKennesaw16 schoolsSmyrna14 schoolsPowder Springs12 schoolsAcworth10 schoolsMableton9 schoolsAustell6 schoolsAtlanta2 schools

About Cobb County

Across the wide-reaching Georgia county of Cobb County of about 775,208 residents, the public-school footprint covers 129 schools and about 116,609 students.

Zooming out, census numbers show the median household earns about $102,738 a year, about 51% of adults have a bachelor's degree or above, and the federal-poverty share is near 6%. That income level is 64% meaningfully above the Georgia median.

For a sense of the school types, Cobb County spans 78 elementary schools (50,523 students), 29 middle schools (26,570), 20 high schools (38,664), and 2 combined or other schools.

The largest single district in Cobb County is Cobb County Public Schools, which alone enrolls about 105,738 students.

Over the past 7-year window. Combined enrollment now sits at 116,609 students, shrank 4% from the 121,572 reported in SY 2017-18. The school count climbed from 124 to 129 across the same 7-year window. Demographically, the White share of enrollment declined from 36% to 31%.

Within the allk12 community for this area, the community for Cobb County discusses sports rivalries, cross-district programs, and shared facilities. Discussions cut across districts, schools, and grade levels.

Frequently asked questions

How many K-12 schools serve Cobb County?
There are 129 public K-12 schools in Cobb County, Georgia, with a combined enrollment of about 116,609.
How many high schools are in Cobb County?
Cobb County, Georgia has 20 public high schools, serving approximately 38,664 students.
How many middle schools are in Cobb County?
Cobb County, Georgia has 29 public middle schools, serving approximately 26,570 students.
How many elementary schools are in Cobb County?
Cobb County, Georgia has 78 public elementary schools, serving approximately 50,523 students.
What is the largest school district in Cobb County?
Cobb County Public Schools is the largest school district in Cobb County, serving approximately 105,738 students. The county contains 8 school districts overall.
What is the population of Cobb County?
Cobb County, Georgia has a population of approximately 775,208, with a median age of 38. About 22.6% of residents are under 18.
What is the median household income in Cobb County?
Median household income in Cobb County is $102,738, above the Georgia average of $62,740. About 5.7% of residents live below the federal poverty line.
How educated are residents of Cobb County?
Approximately 50.8% of adults 25 and older in Cobb County hold a bachelor's degree or higher, according to the Census ACS 5-year estimate.
What share of students in Cobb County qualify for free or reduced lunch?
Roughly 53.3% of students in Cobb County public schools qualify for free or reduced-price lunch, a common proxy for low-income enrollment. This is lower than the Georgia county average of 82.6%.
What is the student-teacher ratio in Cobb County schools?
Across Cobb County public schools, the enrollment-weighted student-teacher ratio is approximately 14.5 to 1.

Cobb County school rankings

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