Data / Rankings / High school graduate or higher, population 25 and over / Counties in Ohio

Counties in Ohio by high school graduate or higher, population 25 and over, 2024

Delaware County had the highest high school graduate or higher, population 25 and over of 88 counties in 2024, at 97.1%. Holmes County had the lowest, at 58.8%. The median was 91.5% and the figure for Ohio was 91.8%. Source: the U.S. Census Bureau.

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Highest97.1Delaware County
Lowest58.8Holmes County
Median91.588 counties
Ohio91.8History

Map of counties, 2024

Adams County: 85.9 %Allen County: 92.6 %Ashland County: 91.4 %Ashtabula County: 87.6 %Athens County: 91.7 %Auglaize County: 94.8 %Belmont County: 92.2 %Brown County: 87.3 %Butler County: 91.2 %Carroll County: 90.7 %Champaign County: 91.2 %Clark County: 89 %Clermont County: 92.1 %Clinton County: 92.4 %Columbiana County: 89.8 %Coshocton County: 83.5 %Crawford County: 91.4 %Cuyahoga County: 91.5 %Darke County: 90.8 %Defiance County: 92.8 %Delaware County: 97.1 %Erie County: 93.2 %Fairfield County: 94 %Fayette County: 86.8 %Franklin County: 91.2 %Fulton County: 94.5 %Gallia County: 87.1 %Geauga County: 91.8 %Greene County: 94.2 %Guernsey County: 86.8 %Hamilton County: 92.7 %Hancock County: 95.8 %Hardin County: 92.6 %Harrison County: 89.5 %Henry County: 93.1 %Highland County: 87.6 %Hocking County: 89.5 %Holmes County: 58.8 %Huron County: 90.9 %Jackson County: 86.5 %Jefferson County: 92.2 %Knox County: 91 %Lake County: 94.5 %Lawrence County: 90.1 %Licking County: 93.5 %Logan County: 92.4 %Lorain County: 91.9 %Lucas County: 91.5 %Madison County: 89.6 %Mahoning County: 91.9 %Marion County: 89.3 %Medina County: 94.3 %Meigs County: 86.4 %Mercer County: 95.2 %Miami County: 92.8 %Monroe County: 91.1 %Montgomery County: 92.7 %Morgan County: 87.9 %Morrow County: 90.1 %Muskingum County: 90.7 %Noble County: 84.3 %Ottawa County: 94.4 %Paulding County: 90.5 %Perry County: 88.4 %Pickaway County: 89.8 %Pike County: 86.9 %Portage County: 92.9 %Preble County: 92.5 %Putnam County: 95.3 %Richland County: 90 %Ross County: 89 %Sandusky County: 93.6 %Scioto County: 88.8 %Seneca County: 93.3 %Shelby County: 91.4 %Stark County: 93.2 %Summit County: 92.8 %Trumbull County: 90.5 %Tuscarawas County: 88.9 %Union County: 95.8 %Van Wert County: 94.1 %Vinton County: 82.9 %Warren County: 95.1 %Washington County: 93.8 %Wayne County: 86.7 %Williams County: 91.8 %Wood County: 95 %Wyandot County: 94.8 %
  • Under 88
  • 88 to 90
  • 90 to 91
  • 91 to 93
  • 93 to 94
  • 94 and over
%, 2024. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2024

Delaware County: 97.1 %Delaware County97.1Union County: 95.8 %Union County95.8Hancock County: 95.8 %Hancock County95.8Putnam County: 95.3 %Putnam County95.3Mercer County: 95.2 %Mercer County95.2Warren County: 95.1 %Warren County95.1Wood County: 95 %Wood County95Wyandot County: 94.8 %Wyandot County94.8Auglaize County: 94.8 %Auglaize County94.8Fulton County: 94.5 %Fulton County94.5Lake County: 94.5 %Lake County94.5Ottawa County: 94.4 %Ottawa County94.4Medina County: 94.3 %Medina County94.3Greene County: 94.2 %Greene County94.2Van Wert County: 94.1 %Van Wert County94.1Fairfield County: 94 %Fairfield County94Washington County: 93.8 %Washington County93.8Sandusky County: 93.6 %Sandusky County93.6Licking County: 93.5 %Licking County93.5Seneca County: 93.3 %Seneca County93.3Stark County: 93.2 %Stark County93.2Erie County: 93.2 %Erie County93.2Henry County: 93.1 %Henry County93.1Portage County: 92.9 %Portage County92.9Defiance County: 92.8 %Defiance County92.8Summit County: 92.8 %Summit County92.8Miami County: 92.8 %Miami County92.8Hamilton County: 92.7 %Hamilton County92.7Montgomery County: 92.7 %Montgomery County92.7Hardin County: 92.6 %Hardin County92.6Allen County: 92.6 %Allen County92.6Preble County: 92.5 %Preble County92.5Logan County: 92.4 %Logan County92.4Clinton County: 92.4 %Clinton County92.4Jefferson County: 92.2 %Jefferson County92.2Belmont County: 92.2 %Belmont County92.2Clermont County: 92.1 %Clermont County92.1Mahoning County: 91.9 %Mahoning County91.9Lorain County: 91.9 %Lorain County91.9Williams County: 91.8 %Williams County91.8Delaware County: 97.1 %Delaware County97.1Union County: 95.8 %Union County95.8Hancock County: 95.8 %Hancock County95.8Putnam County: 95.3 %Putnam County95.3Mercer County: 95.2 %Mercer County95.2Warren County: 95.1 %Warren County95.1Wood County: 95 %Wood County95Wyandot County: 94.8 %Wyandot County94.8Auglaize County: 94.8 %Auglaize County94.8Fulton County: 94.5 %Fulton County94.5Lake County: 94.5 %Lake County94.5Ottawa County: 94.4 %Ottawa County94.4Medina County: 94.3 %Medina County94.3Greene County: 94.2 %Greene County94.2Van Wert County: 94.1 %Van Wert County94.1Fairfield County: 94 %Fairfield County94Washington County: 93.8 %Washington County93.8Sandusky County: 93.6 %Sandusky County93.6Licking County: 93.5 %Licking County93.5Seneca County: 93.3 %Seneca County93.3Stark County: 93.2 %Stark County93.2Erie County: 93.2 %Erie County93.2Henry County: 93.1 %Henry County93.1Portage County: 92.9 %Portage County92.9Defiance County: 92.8 %Defiance County92.8Summit County: 92.8 %Summit County92.8Miami County: 92.8 %Miami County92.8Hamilton County: 92.7 %Hamilton County92.7Montgomery County: 92.7 %Montgomery County92.7Hardin County: 92.6 %Hardin County92.6Allen County: 92.6 %Allen County92.6Preble County: 92.5 %Preble County92.5Logan County: 92.4 %Logan County92.4Clinton County: 92.4 %Clinton County92.4Jefferson County: 92.2 %Jefferson County92.2Belmont County: 92.2 %Belmont County92.2Clermont County: 92.1 %Clermont County92.1Mahoning County: 91.9 %Mahoning County91.9Lorain County: 91.9 %Lorain County91.9Williams County: 91.8 %Williams County91.8
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2024 (%)Change on 2023
1Delaware County97.10 pts
2Union County95.8+0.6 pts
3Hancock County95.8+0.9 pts
4Putnam County95.3+0.7 pts
5Mercer County95.2+0.5 pts
6Warren County95.10 pts
7Wood County95-0.1 pts
8Wyandot County94.80 pts
9Auglaize County94.8+1.2 pts
10Fulton County94.5-0.2 pts
11Lake County94.5+0.6 pts
12Ottawa County94.4+0.3 pts
13Medina County94.3-0.2 pts
14Greene County94.2-0.3 pts
15Van Wert County94.1+0.6 pts
16Fairfield County94-0 pts
17Washington County93.8+0.9 pts
18Sandusky County93.6+0.3 pts
19Licking County93.5+0.4 pts
20Seneca County93.3+0.1 pts
21Stark County93.2+0.4 pts
22Erie County93.2+0.7 pts
23Henry County93.1+0.5 pts
24Portage County92.90 pts
25Defiance County92.8+0.5 pts
26Summit County92.8-0.1 pts
27Miami County92.8-0.1 pts
28Hamilton County92.7+0.2 pts
29Montgomery County92.7+0.6 pts
30Hardin County92.6+0.9 pts
31Allen County92.6+0.2 pts
32Preble County92.5-0.2 pts
33Logan County92.4-0.5 pts
34Clinton County92.4+0.8 pts
35Jefferson County92.2-0.7 pts
36Belmont County92.2+0.1 pts
37Clermont County92.1+0.2 pts
38Mahoning County91.9+0.3 pts
39Lorain County91.9+0.4 pts
40Williams County91.8+0.4 pts
41Geauga County91.8+0.5 pts
42Athens County91.7-0.1 pts
43Cuyahoga County91.5+0.3 pts
43Lucas County91.5+0.5 pts
45Shelby County91.4+0.1 pts
46Ashland County91.4+0.5 pts
47Crawford County91.4+0.8 pts
48Butler County91.20 pts
49Champaign County91.2-0.6 pts
49Franklin County91.2-0 pts
51Monroe County91.1+1 pts
52Knox County91-0 pts
53Huron County90.9+0.3 pts
54Darke County90.8+0.1 pts
55Carroll County90.7+1 pts
56Muskingum County90.7+0.3 pts
57Paulding County90.5+0.2 pts
58Trumbull County90.5+0.4 pts
59Lawrence County90.10 pts
59Morrow County90.1-1.3 pts
61Richland County90+0.5 pts
62Pickaway County89.8+1.4 pts
63Columbiana County89.8+0.1 pts
64Madison County89.6+0.7 pts
65Harrison County89.5-0.3 pts
66Hocking County89.5+1.4 pts
67Marion County89.3+0.2 pts
68Ross County89+0.1 pts
69Clark County89-0.3 pts
70Tuscarawas County88.9-0 pts
71Scioto County88.8+0.1 pts
72Perry County88.4+0.1 pts
73Morgan County87.9-0.7 pts
74Ashtabula County87.60 pts
74Highland County87.6+0.7 pts
76Brown County87.3-0.4 pts
77Gallia County87.1+0.2 pts
78Pike County86.9+1.3 pts
79Fayette County86.8+1.1 pts
80Guernsey County86.8+1.1 pts
81Wayne County86.7+0.4 pts
82Jackson County86.5-1 pts
83Meigs County86.4-0.4 pts
84Adams County85.9+0.7 pts
85Noble County84.3-1 pts
86Coshocton County83.5-1.5 pts
87Vinton County82.9-0.2 pts
88Holmes County58.8+1.7 pts

Other periods

About this ranking

People aged 25 and over who hold a regular high school diploma, a GED or alternative credential, or any higher level of education, as a percentage of all people aged 25 and over. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

Measures the adult population, not students: it is not the high school graduation rate of a class. Not comparable with the EU share below upper secondary education, which covers ages 25 to 64.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b15003.dat. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs (Counties in Ohio by high school graduate or higher, population 25 and over, 2024) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b15003.dat

MLA 9

American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs, Counties in Ohio by high school graduate or higher, population 25 and over, 2024. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b15003.dat. Invokely, https://invokely.ai/rankings/high-school-graduate-or-higher/ohio-counties. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs. Counties in Ohio by high school graduate or higher, population 25 and over, 2024. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b15003.dat. Also distributed by Invokely, https://invokely.ai/rankings/high-school-graduate-or-higher/ohio-counties.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs, Counties in Ohio by high school graduate or higher, population 25 and over, 2024 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b15003.dat, via Invokely: https://invokely.ai/rankings/high-school-graduate-or-higher/ohio-counties (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_ohio_by_2024,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs: Counties in Ohio by high school graduate or higher, population 25 and over, 2024}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b15003.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/high-school-graduate-or-higher/ohio-counties. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary\_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b15003.dat. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs: Counties in Ohio by high school graduate or higher, population 25 and over, 2024
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b15003.dat
L2  - https://invokely.ai/rankings/high-school-graduate-or-higher/ohio-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/high-school-graduate-or-higher/ohio-counties.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b15003.dat. Retrieved 2026-10-12.
ER  -
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Rank Counties in Ohio by high school graduate or higher, population 25 and over using official data, and cite the source.
rank_places {"indicator":"high_school_graduate_share","level":"province","within":"Ohio","limit":10}
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Questions

Which county has the highest high school graduate or higher, population 25 and over?

Delaware County, with 97.1% in 2024, according to the U.S. Census Bureau.

Which county has the lowest high school graduate or higher, population 25 and over?

Holmes County, with 58.8% in 2024.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs. Retrieved 2026-10-12.

High school graduate or higher, population 25 and over: other rankings

Counties in Ohio: more rankings