Data / Rankings / Graduate or professional degree, population 25 and over / Counties in Ohio

Counties in Ohio by graduate or professional degree, population 25 and over

Delaware County had the highest graduate or professional degree, population 25 and over of 88 counties in 2023, at 23.6%. Monroe County had the lowest, at 3.5%. The median was 7.1% and the figure for Ohio was 11.9%. Source: the U.S. Census Bureau.

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Highest23.6Delaware County
Lowest3.5Monroe County
Median7.188 counties
Ohio11.9History

Map of counties, 2023

Adams County: 6.9 %Allen County: 7.5 %Ashland County: 7.4 %Ashtabula County: 5.4 %Athens County: 18.8 %Auglaize County: 8 %Belmont County: 7.1 %Brown County: 5.6 %Butler County: 11.7 %Carroll County: 5 %Champaign County: 6.3 %Clark County: 7 %Clermont County: 11.6 %Clinton County: 7.5 %Columbiana County: 5.2 %Coshocton County: 5.6 %Crawford County: 6 %Cuyahoga County: 15.5 %Darke County: 5.4 %Defiance County: 7 %Delaware County: 23.6 %Erie County: 9.2 %Fairfield County: 11.1 %Fayette County: 4.5 %Franklin County: 16.3 %Fulton County: 7 %Gallia County: 7.7 %Geauga County: 14.5 %Greene County: 19.7 %Guernsey County: 5.2 %Hamilton County: 16.7 %Hancock County: 11.3 %Hardin County: 6.4 %Harrison County: 4.5 %Henry County: 6.3 %Highland County: 5.5 %Hocking County: 4.6 %Holmes County: 3.6 %Huron County: 6 %Jackson County: 5.8 %Jefferson County: 7.2 %Knox County: 8.6 %Lake County: 10.6 %Lawrence County: 6.9 %Licking County: 9.5 %Logan County: 5.9 %Lorain County: 10.5 %Lucas County: 10.9 %Madison County: 7.1 %Mahoning County: 9.5 %Marion County: 4.3 %Medina County: 12.4 %Meigs County: 3.7 %Mercer County: 8 %Miami County: 10.1 %Monroe County: 3.5 %Montgomery County: 12.3 %Morgan County: 4.5 %Morrow County: 5.3 %Muskingum County: 7.7 %Noble County: 4.3 %Ottawa County: 11 %Paulding County: 5.2 %Perry County: 4.3 %Pickaway County: 6.6 %Pike County: 4.7 %Portage County: 12.7 %Preble County: 7.1 %Putnam County: 8.2 %Richland County: 6.6 %Ross County: 6.1 %Sandusky County: 5.6 %Scioto County: 6.5 %Seneca County: 7.5 %Shelby County: 7 %Stark County: 8.8 %Summit County: 13 %Trumbull County: 6.8 %Tuscarawas County: 6.1 %Union County: 13.8 %Van Wert County: 6.4 %Vinton County: 4.5 %Warren County: 18.2 %Washington County: 7.4 %Wayne County: 9.6 %Williams County: 4.9 %Wood County: 15.2 %Wyandot County: 8 %
  • Under 5.2
  • 5.2 to 6.1
  • 6.1 to 7.1
  • 7.1 to 8.2
  • 8.2 to 12
  • 12 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: 23.6 %Delaware County23.6Greene County: 19.7 %Greene County19.7Athens County: 18.8 %Athens County18.8Warren County: 18.2 %Warren County18.2Hamilton County: 16.7 %Hamilton County16.7Franklin County: 16.3 %Franklin County16.3Cuyahoga County: 15.5 %Cuyahoga County15.5Wood County: 15.2 %Wood County15.2Geauga County: 14.5 %Geauga County14.5Union County: 13.8 %Union County13.8Summit County: 13 %Summit County13Portage County: 12.7 %Portage County12.7Medina County: 12.4 %Medina County12.4Montgomery County: 12.3 %Montgomery County12.3Butler County: 11.7 %Butler County11.7Clermont County: 11.6 %Clermont County11.6Hancock County: 11.3 %Hancock County11.3Fairfield County: 11.1 %Fairfield County11.1Ottawa County: 11 %Ottawa County11Lucas County: 10.9 %Lucas County10.9Lake County: 10.6 %Lake County10.6Lorain County: 10.5 %Lorain County10.5Miami County: 10.1 %Miami County10.1Wayne County: 9.6 %Wayne County9.6Mahoning County: 9.5 %Mahoning County9.5Licking County: 9.5 %Licking County9.5Erie County: 9.2 %Erie County9.2Stark County: 8.8 %Stark County8.8Knox County: 8.6 %Knox County8.6Putnam County: 8.2 %Putnam County8.2Auglaize County: 8 %Auglaize County8Mercer County: 8 %Mercer County8Wyandot County: 8 %Wyandot County8Muskingum County: 7.7 %Muskingum County7.7Gallia County: 7.7 %Gallia County7.7Clinton County: 7.5 %Clinton County7.5Seneca County: 7.5 %Seneca County7.5Allen County: 7.5 %Allen County7.5Washington County: 7.4 %Washington County7.4Ashland County: 7.4 %Ashland County7.4Delaware County: 23.6 %Delaware County23.6Greene County: 19.7 %Greene County19.7Athens County: 18.8 %Athens County18.8Warren County: 18.2 %Warren County18.2Hamilton County: 16.7 %Hamilton County16.7Franklin County: 16.3 %Franklin County16.3Cuyahoga County: 15.5 %Cuyahoga County15.5Wood County: 15.2 %Wood County15.2Geauga County: 14.5 %Geauga County14.5Union County: 13.8 %Union County13.8Summit County: 13 %Summit County13Portage County: 12.7 %Portage County12.7Medina County: 12.4 %Medina County12.4Montgomery County: 12.3 %Montgomery County12.3Butler County: 11.7 %Butler County11.7Clermont County: 11.6 %Clermont County11.6Hancock County: 11.3 %Hancock County11.3Fairfield County: 11.1 %Fairfield County11.1Ottawa County: 11 %Ottawa County11Lucas County: 10.9 %Lucas County10.9Lake County: 10.6 %Lake County10.6Lorain County: 10.5 %Lorain County10.5Miami County: 10.1 %Miami County10.1Wayne County: 9.6 %Wayne County9.6Mahoning County: 9.5 %Mahoning County9.5Licking County: 9.5 %Licking County9.5Erie County: 9.2 %Erie County9.2Stark County: 8.8 %Stark County8.8Knox County: 8.6 %Knox County8.6Putnam County: 8.2 %Putnam County8.2Auglaize County: 8 %Auglaize County8Mercer County: 8 %Mercer County8Wyandot County: 8 %Wyandot County8Muskingum County: 7.7 %Muskingum County7.7Gallia County: 7.7 %Gallia County7.7Clinton County: 7.5 %Clinton County7.5Seneca County: 7.5 %Seneca County7.5Allen County: 7.5 %Allen County7.5Washington County: 7.4 %Washington County7.4Ashland County: 7.4 %Ashland County7.4
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2023 (%)Change on 2022
1Delaware County23.6+1 pts
2Greene County19.7-0.4 pts
3Athens County18.8+0.1 pts
4Warren County18.2+0.2 pts
5Hamilton County16.7+0.6 pts
6Franklin County16.3+0.3 pts
7Cuyahoga County15.5+0.5 pts
8Wood County15.2-0.1 pts
9Geauga County14.5+0.1 pts
10Union County13.8+0.3 pts
11Summit County13+0.2 pts
12Portage County12.7-0.3 pts
13Medina County12.40 pts
14Montgomery County12.3+0.2 pts
15Butler County11.7+0.3 pts
16Clermont County11.6+0.5 pts
17Hancock County11.3+0.8 pts
18Fairfield County11.1+0.5 pts
19Ottawa County11+1.3 pts
20Lucas County10.9+0.4 pts
21Lake County10.6+0.3 pts
22Lorain County10.5+0.4 pts
23Miami County10.1+0.7 pts
24Wayne County9.6+0.1 pts
25Mahoning County9.5+0.1 pts
26Licking County9.5-0.2 pts
27Erie County9.2+0.1 pts
28Stark County8.8+0.2 pts
29Knox County8.6+0.1 pts
30Putnam County8.2-0.1 pts
31Auglaize County8-0.1 pts
31Mercer County8+1.3 pts
33Wyandot County80 pts
34Muskingum County7.7+0.3 pts
35Gallia County7.7-0.2 pts
36Clinton County7.5-0.3 pts
37Seneca County7.5+0.8 pts
38Allen County7.5+0.3 pts
39Washington County7.4-0.2 pts
40Ashland County7.4-0.2 pts
41Jefferson County7.2+0.1 pts
42Preble County7.1-0.1 pts
43Belmont County7.1+0.8 pts
44Madison County7.1+0.7 pts
45Defiance County7+0.2 pts
46Clark County70 pts
47Shelby County7-0.4 pts
48Fulton County7+0.3 pts
49Adams County6.9-0.3 pts
50Lawrence County6.9-0.2 pts
51Trumbull County6.80 pts
52Richland County6.6-0.1 pts
53Pickaway County6.6+0.5 pts
54Scioto County6.5-0.4 pts
55Hardin County6.4-0.5 pts
56Van Wert County6.4-0.3 pts
57Champaign County6.3+0.5 pts
58Henry County6.3+0.5 pts
59Ross County6.1-0.4 pts
60Tuscarawas County6.1-0.4 pts
61Crawford County6+0.6 pts
62Huron County6+0.8 pts
63Logan County5.9-0.6 pts
64Jackson County5.8+0.7 pts
65Brown County5.6+0.5 pts
65Sandusky County5.6-0.2 pts
67Coshocton County5.6-0.2 pts
68Highland County5.5+0.1 pts
69Darke County5.40 pts
70Ashtabula County5.4+0.1 pts
71Morrow County5.3+0.2 pts
72Columbiana County5.2-0.3 pts
73Guernsey County5.2-0 pts
74Paulding County5.2+0.6 pts
75Carroll County5-0.1 pts
76Williams County4.9-0.4 pts
77Pike County4.7+0.2 pts
78Hocking County4.6+0.5 pts
79Morgan County4.5+0.7 pts
80Fayette County4.5-0.6 pts
80Vinton County4.5-0.2 pts
82Harrison County4.5+0.3 pts
83Noble County4.3-0.2 pts
83Perry County4.3-0.3 pts
85Marion County4.3-0.1 pts
86Meigs County3.7+0.2 pts
87Holmes County3.6-0.1 pts
88Monroe County3.5-0.1 pts

Other periods

About this ranking

People aged 25 and over whose highest degree is a master's, professional school or doctorate degree, 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.

A subset of bachelors_degree_share, which also counts people whose highest degree is a bachelor's.

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 master's, professional school or doctorate degree 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 master's, professional school or doctorate degree as a percentage of the population 25 years and over, calculated with stored inputs (Counties in Ohio by graduate or professional degree, 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 master's, professional school or doctorate degree as a percentage of the population 25 years and over, calculated with stored inputs, Counties in Ohio by graduate or professional degree, 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/graduate-or-professional-degree/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 master's, professional school or doctorate degree as a percentage of the population 25 years and over, calculated with stored inputs. Counties in Ohio by graduate or professional degree, 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/graduate-or-professional-degree/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 master's, professional school or doctorate degree as a percentage of the population 25 years and over, calculated with stored inputs, Counties in Ohio by graduate or professional degree, 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/graduate-or-professional-degree/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 master's, professional school or doctorate degree as a percentage of the population 25 years and over, calculated with stored inputs: Counties in Ohio by graduate or professional degree, 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/graduate-or-professional-degree/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 master's, professional school or doctorate degree 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 master's, professional school or doctorate degree as a percentage of the population 25 years and over, calculated with stored inputs: Counties in Ohio by graduate or professional degree, 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/graduate-or-professional-degree/ohio-counties?period=2023
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/graduate-or-professional-degree/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 master's, professional school or doctorate degree 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 graduate or professional degree, population 25 and over using official data, and cite the source.
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Questions

Which county has the highest graduate or professional degree, population 25 and over?

Delaware County, with 23.6% in 2023, according to the U.S. Census Bureau.

Which county has the lowest graduate or professional degree, population 25 and over?

Monroe County, with 3.5% 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 master's, professional school or doctorate degree as a percentage of the population 25 years and over, calculated with stored inputs. Retrieved 2026-10-12.

Graduate or professional degree, population 25 and over: other rankings

Counties in Ohio: more rankings