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

Delaware County had the highest high school graduate or higher, population 25 and over of 88 counties in 2023, at 97.1%. Holmes County had the lowest, at 57.1%. The median was 91.3% and the figure for Ohio was 91.6%. Source: the U.S. Census Bureau.

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Highest97.1Delaware County
Lowest57.1Holmes County
Median91.388 counties
Ohio91.6History

Map of counties, 2023

Adams County: 85.2 %Allen County: 92.4 %Ashland County: 91 %Ashtabula County: 87.5 %Athens County: 91.8 %Auglaize County: 93.6 %Belmont County: 92.1 %Brown County: 87.8 %Butler County: 91.2 %Carroll County: 89.8 %Champaign County: 91.8 %Clark County: 89.3 %Clermont County: 91.9 %Clinton County: 91.6 %Columbiana County: 89.7 %Coshocton County: 85 %Crawford County: 90.5 %Cuyahoga County: 91.2 %Darke County: 90.7 %Defiance County: 92.3 %Delaware County: 97.1 %Erie County: 92.4 %Fairfield County: 94 %Fayette County: 85.8 %Franklin County: 91.2 %Fulton County: 94.8 %Gallia County: 86.9 %Geauga County: 91.2 %Greene County: 94.5 %Guernsey County: 85.7 %Hamilton County: 92.5 %Hancock County: 94.9 %Hardin County: 91.7 %Harrison County: 89.8 %Henry County: 92.6 %Highland County: 86.9 %Hocking County: 88.1 %Holmes County: 57.1 %Huron County: 90.7 %Jackson County: 87.5 %Jefferson County: 92.9 %Knox County: 91.1 %Lake County: 93.9 %Lawrence County: 90 %Licking County: 93.1 %Logan County: 92.9 %Lorain County: 91.5 %Lucas County: 91 %Madison County: 88.9 %Mahoning County: 91.6 %Marion County: 89.1 %Medina County: 94.5 %Meigs County: 86.8 %Mercer County: 94.7 %Miami County: 92.8 %Monroe County: 90 %Montgomery County: 92.1 %Morgan County: 88.5 %Morrow County: 91.4 %Muskingum County: 90.3 %Noble County: 85.3 %Ottawa County: 94.1 %Paulding County: 90.4 %Perry County: 88.3 %Pickaway County: 88.4 %Pike County: 85.6 %Portage County: 92.9 %Preble County: 92.6 %Putnam County: 94.7 %Richland County: 89.5 %Ross County: 88.9 %Sandusky County: 93.3 %Scioto County: 88.7 %Seneca County: 93.2 %Shelby County: 91.4 %Stark County: 92.8 %Summit County: 92.9 %Trumbull County: 90 %Tuscarawas County: 88.9 %Union County: 95.2 %Van Wert County: 93.6 %Vinton County: 83.1 %Warren County: 95 %Washington County: 92.9 %Wayne County: 86.3 %Williams County: 91.4 %Wood County: 95.2 %Wyandot County: 94.8 %
  • Under 88
  • 88 to 90
  • 90 to 91
  • 91 to 92
  • 92 to 94
  • 94 and over
%, 2023. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2023

Delaware County: 97.1 %Delaware County97.1Union County: 95.2 %Union County95.2Wood County: 95.2 %Wood County95.2Warren County: 95 %Warren County95Hancock County: 94.9 %Hancock County94.9Wyandot County: 94.8 %Wyandot County94.8Fulton County: 94.8 %Fulton County94.8Mercer County: 94.7 %Mercer County94.7Putnam County: 94.7 %Putnam County94.7Medina County: 94.5 %Medina County94.5Greene County: 94.5 %Greene County94.5Ottawa County: 94.1 %Ottawa County94.1Fairfield County: 94 %Fairfield County94Lake County: 93.9 %Lake County93.9Auglaize County: 93.6 %Auglaize County93.6Van Wert County: 93.6 %Van Wert County93.6Sandusky County: 93.3 %Sandusky County93.3Seneca County: 93.2 %Seneca County93.2Licking County: 93.1 %Licking County93.1Washington County: 92.9 %Washington County92.9Portage County: 92.9 %Portage County92.9Summit County: 92.9 %Summit County92.9Jefferson County: 92.9 %Jefferson County92.9Logan County: 92.9 %Logan County92.9Miami County: 92.8 %Miami County92.8Stark County: 92.8 %Stark County92.8Preble County: 92.6 %Preble County92.6Henry County: 92.6 %Henry County92.6Hamilton County: 92.5 %Hamilton County92.5Erie County: 92.4 %Erie County92.4Allen County: 92.4 %Allen County92.4Defiance County: 92.3 %Defiance County92.3Montgomery County: 92.1 %Montgomery County92.1Belmont County: 92.1 %Belmont County92.1Clermont County: 91.9 %Clermont County91.9Athens County: 91.8 %Athens County91.8Champaign County: 91.8 %Champaign County91.8Hardin County: 91.7 %Hardin County91.7Mahoning County: 91.6 %Mahoning County91.6Clinton County: 91.6 %Clinton County91.6Delaware County: 97.1 %Delaware County97.1Union County: 95.2 %Union County95.2Wood County: 95.2 %Wood County95.2Warren County: 95 %Warren County95Hancock County: 94.9 %Hancock County94.9Wyandot County: 94.8 %Wyandot County94.8Fulton County: 94.8 %Fulton County94.8Mercer County: 94.7 %Mercer County94.7Putnam County: 94.7 %Putnam County94.7Medina County: 94.5 %Medina County94.5Greene County: 94.5 %Greene County94.5Ottawa County: 94.1 %Ottawa County94.1Fairfield County: 94 %Fairfield County94Lake County: 93.9 %Lake County93.9Auglaize County: 93.6 %Auglaize County93.6Van Wert County: 93.6 %Van Wert County93.6Sandusky County: 93.3 %Sandusky County93.3Seneca County: 93.2 %Seneca County93.2Licking County: 93.1 %Licking County93.1Washington County: 92.9 %Washington County92.9Portage County: 92.9 %Portage County92.9Summit County: 92.9 %Summit County92.9Jefferson County: 92.9 %Jefferson County92.9Logan County: 92.9 %Logan County92.9Miami County: 92.8 %Miami County92.8Stark County: 92.8 %Stark County92.8Preble County: 92.6 %Preble County92.6Henry County: 92.6 %Henry County92.6Hamilton County: 92.5 %Hamilton County92.5Erie County: 92.4 %Erie County92.4Allen County: 92.4 %Allen County92.4Defiance County: 92.3 %Defiance County92.3Montgomery County: 92.1 %Montgomery County92.1Belmont County: 92.1 %Belmont County92.1Clermont County: 91.9 %Clermont County91.9Athens County: 91.8 %Athens County91.8Champaign County: 91.8 %Champaign County91.8Hardin County: 91.7 %Hardin County91.7Mahoning County: 91.6 %Mahoning County91.6Clinton County: 91.6 %Clinton County91.6
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2023 (%)Change on 2022
1Delaware County97.1-0.1 pts
2Union County95.2+0.3 pts
3Wood County95.2+0.4 pts
4Warren County95+0.2 pts
5Hancock County94.9+1.1 pts
6Wyandot County94.8+0.8 pts
7Fulton County94.8+0.9 pts
8Mercer County94.7+1.6 pts
8Putnam County94.7-0.2 pts
10Medina County94.5-0.5 pts
11Greene County94.5+0.3 pts
12Ottawa County94.1+1 pts
13Fairfield County94+0.1 pts
14Lake County93.9+0.3 pts
15Auglaize County93.6+0.2 pts
16Van Wert County93.6+0.9 pts
17Sandusky County93.3+0.1 pts
18Seneca County93.2-0.2 pts
19Licking County93.1-0 pts
20Washington County92.9+1.2 pts
21Portage County92.9+0.1 pts
22Summit County92.9+0.4 pts
23Jefferson County92.9+0.3 pts
24Logan County92.9-0.1 pts
25Miami County92.8-0 pts
26Stark County92.8+0.1 pts
27Preble County92.6+0.7 pts
28Henry County92.6-0.4 pts
29Hamilton County92.5+0.3 pts
30Erie County92.4+0.6 pts
31Allen County92.4+0.4 pts
32Defiance County92.3+0.3 pts
33Montgomery County92.1+0.4 pts
34Belmont County92.1+0.6 pts
35Clermont County91.9+0.4 pts
36Athens County91.8+0.1 pts
36Champaign County91.8+0.4 pts
38Hardin County91.7+0.1 pts
39Mahoning County91.6+0.2 pts
40Clinton County91.6+0.5 pts
41Lorain County91.5+0.3 pts
42Williams County91.4+0.3 pts
43Morrow County91.4+1.6 pts
44Shelby County91.4+0.2 pts
45Cuyahoga County91.2+0.3 pts
46Franklin County91.2-0.3 pts
46Geauga County91.2+0.1 pts
48Butler County91.2-0 pts
49Knox County91.1-0.4 pts
50Lucas County91+0.1 pts
51Ashland County91+1.1 pts
52Darke County90.7-0.4 pts
53Huron County90.7+0.5 pts
54Crawford County90.5+0.6 pts
55Paulding County90.4+0.5 pts
56Muskingum County90.3-0.1 pts
57Monroe County90+1.2 pts
58Lawrence County90+0.6 pts
59Trumbull County90+0.4 pts
60Harrison County89.8+1.6 pts
61Carroll County89.8+0.9 pts
62Columbiana County89.7-0.2 pts
63Richland County89.5-0.1 pts
64Clark County89.3+0.3 pts
65Marion County89.1-0.4 pts
66Madison County88.9+0.1 pts
67Tuscarawas County88.9+0.2 pts
68Ross County88.9+0.2 pts
69Scioto County88.7+1.1 pts
70Morgan County88.5+2 pts
71Pickaway County88.4+0.7 pts
72Perry County88.3+0.3 pts
73Hocking County88.1+0.2 pts
74Brown County87.8+0.3 pts
75Ashtabula County87.5+0.9 pts
76Jackson County87.5+0.4 pts
77Gallia County86.9+0.5 pts
77Highland County86.9+1.8 pts
79Meigs County86.8+1 pts
80Wayne County86.3-0.2 pts
81Fayette County85.8+0.8 pts
82Guernsey County85.7-0.5 pts
83Pike County85.6+1.4 pts
84Noble County85.3+0.6 pts
85Adams County85.2+0.2 pts
86Coshocton County85+0.5 pts
87Vinton County83.1+2.8 pts
88Holmes County57.1-0.5 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/2023/table-based-SF/data/5YRData/acsdt5y2023-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, 2023) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-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, 2023. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b15003.dat. Invokely, https://invokely.ai/rankings/high-school-graduate-or-higher/ohio-counties?period=2023. 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, 2023. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b15003.dat. Also distributed by Invokely, https://invokely.ai/rankings/high-school-graduate-or-higher/ohio-counties?period=2023.

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, 2023 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b15003.dat, via Invokely: https://invokely.ai/rankings/high-school-graduate-or-higher/ohio-counties?period=2023 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_ohio_by_2023,
  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, 2023}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b15003.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/high-school-graduate-or-higher/ohio-counties?period=2023. 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/2023/table-based-SF/data/5YRData/acsdt5y2023-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, 2023
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b15003.dat
L2  - https://invokely.ai/rankings/high-school-graduate-or-higher/ohio-counties?period=2023
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/high-school-graduate-or-higher/ohio-counties?period=2023.
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/2023/table-based-SF/data/5YRData/acsdt5y2023-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 2023, according to the U.S. Census Bureau.

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

Holmes County, with 57.1% in 2023.

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