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Mercer County

Ohio · Public K-12

The 22 public K-12 schools in Mercer County cover all standard grade bands (9 elementary, 6 middle, and 7 high), with combined enrollment around 9,242.

7-year change in Mercer County

SY 2017-18 vs SY 2024-25
Total enrollment
8,363
+453 (+6%) vs SY 2017-18
School count
20
0 (0%) vs SY 2017-18
% White
92%
was 94%
% Hispanic
3%
was 2%
% Black
1%
was 1%
% Asian
0%
was 1%
Source: NCES Common Core of Data, enrollment-weighted demographic averages
Schools
22
6 districts
Enrollment
9,242
NCES CCD
Median income
$76,782
Above Ohio avg
Free/reduced lunch
36.8%
Below Ohio avg
Elementary
9
4,641 students
Middle
6
1,894 students
High
7
2,707 students
Combined / other
0
schools
LARGEST DISTRICT
Celina City
3,694 students · 6 districts in Mercer County

County vs. school enrollment demographics

Left bar is the racial makeup of Mercer 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
95%
Hispanic
2%
Black
1%
Asian
1%
Two or more
2%
Native American
0%
Pacific Islander
0%
School enrollment
White
92%
Hispanic
3%
Black
1%
Asian
0%
Two or more
2%
Native American
0%
Pacific Islander
3%
Bachelor's+
21.9%
adults 25+
Poverty rate
5.8%
ACS 5-year
Unemployment
1.6%
civilian labor
Median age
39
25.4% under 18

Test scores in Mercer County

Latest 2024-25 ELA proficiency, 17 schools ranked. Ohio state average: 59.8%.

See all 17 schools in Mercer County ranked by score →

All schools (22)

LargestA-ZTop rated
NameCityLevelGradesEnrollmentRating
Celina Elementary SchoolCelinaElementaryKG-061,224·
Celina High SchoolCelinaHigh08-12743·
Marion Local Elementary SchoolMaria SteinElementaryKG-08710·
Coldwater Elementary SchoolColdwaterElementaryKG-04667·
Celina Primary SchoolCelinaElementaryKG-02531·
Fort Recovery Elementary SchoolFort RecoveryElementaryPK-05513·
St Henry Elementary SchoolSaint HenryElementaryPK-04489·
Coldwater Middle SchoolColdwaterMiddle05-08429·
Parkway Elementary SchoolRockfordElementaryPK-04389·
Tri Star Career CompactCelinaHigh11-12382·
Coldwater High SchoolColdwaterHigh09-12380·
Celina Intermediate Elementary SchoolCelinaMiddle05-06348·
Celina Middle SchoolCelinaMiddle07-08348·
Marion Local High SchoolMaria SteinHigh09-12306·
Parkway High SchoolRockfordHigh09-12306·
St Henry Middle SchoolSaint HenryMiddle05-08300·
St Henry High SchoolSaint HenryHigh09-12296·
Fort Recovery High SchoolFort RecoveryHigh09-12294·
Parkway Middle SchoolRockfordMiddle05-08279·
Fort Recovery Middle SchoolFort RecoveryMiddle06-08190·
Head StartCelinaElementaryPK-PK101·
Mercer County Head StartRockfordElementaryPK-PK17·

Cities in Mercer County

Celina7 schoolsRockford4 schoolsColdwater3 schoolsFort Recovery3 schoolsSaint Henry3 schoolsMaria Stein2 schools

About Mercer County

Mercer County is a rural-scale county of about 42,484 residents in Ohio. Its public-school system enrolls approximately 9,242 students across 22 schools.

For perspective, census numbers show median household income runs near $76,782, about 22% of adults have a bachelor's degree or above, and roughly 6% of residents live below the federal poverty line. That income level is 10% above the Ohio median.

On the school-mix side, Mercer County spans 9 elementary schools (4,641 students), 6 middle schools (1,894), and 7 high schools (2,707).

Celina City is the biggest district by enrollment, covering about 3,694 students across Mercer County.

Five-year track record. Total public-school enrollment in Mercer County has climbed 6% since SY 2017-18, moving from about 7,910 students to 8,363.

On this page, the community for Mercer County discusses open enrollment windows, redistricting talk, and busing logistics. Discussions cut across districts, schools, and grade levels.

Frequently asked questions

How many K-12 schools serve Mercer County?
There are 22 public K-12 schools in Mercer County, Ohio, with a combined enrollment of about 9,242.
How many high schools are in Mercer County?
Mercer County, Ohio has 7 public high schools, serving approximately 2,707 students.
How many middle schools are in Mercer County?
Mercer County, Ohio has 6 public middle schools, serving approximately 1,894 students.
How many elementary schools are in Mercer County?
Mercer County, Ohio has 9 public elementary schools, serving approximately 4,641 students.
What is the largest school district in Mercer County?
Celina City is the largest school district in Mercer County, serving approximately 3,694 students. The county contains 6 school districts overall.
What is the population of Mercer County?
Mercer County, Ohio has a population of approximately 42,484, with a median age of 39. About 25.4% of residents are under 18.
What is the median household income in Mercer County?
Median household income in Mercer County is $76,782, above the Ohio average of $69,789. About 5.8% of residents live below the federal poverty line.
How educated are residents of Mercer County?
Approximately 21.9% of adults 25 and older in Mercer County hold a bachelor's degree or higher, according to the Census ACS 5-year estimate.
What share of students in Mercer County qualify for free or reduced lunch?
Roughly 36.8% of students in Mercer County public schools qualify for free or reduced-price lunch, a common proxy for low-income enrollment. This is lower than the Ohio county average of 49.0%.
What is the student-teacher ratio in Mercer County schools?
Across Mercer County public schools, the enrollment-weighted student-teacher ratio is approximately 16.2 to 1.

Mercer County school rankings

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