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, 2024

Delaware County had the highest graduate or professional degree, population 25 and over of 88 counties in 2024, at 24%. Holmes County had the lowest, at 3.5%. The median was 7.4% and the figure for Ohio was 12.2%. Source: the U.S. Census Bureau.

Keep it in a collection in your library.
Highest24Delaware County
Lowest3.5Holmes County
Median7.488 counties
Ohio12.2History

Map of counties, 2024

Adams County: 7.1 %Allen County: 7.9 %Ashland County: 7.4 %Ashtabula County: 5.8 %Athens County: 18.6 %Auglaize County: 8.3 %Belmont County: 7.3 %Brown County: 5.1 %Butler County: 11.7 %Carroll County: 6.3 %Champaign County: 5.2 %Clark County: 7.5 %Clermont County: 12.1 %Clinton County: 6.7 %Columbiana County: 5.9 %Coshocton County: 5.3 %Crawford County: 6.9 %Cuyahoga County: 15.7 %Darke County: 5.4 %Defiance County: 6.5 %Delaware County: 24 %Erie County: 9.9 %Fairfield County: 11.7 %Fayette County: 4.8 %Franklin County: 16.3 %Fulton County: 7.9 %Gallia County: 9.1 %Geauga County: 15.8 %Greene County: 20.1 %Guernsey County: 5.6 %Hamilton County: 16.9 %Hancock County: 11.4 %Hardin County: 6.9 %Harrison County: 4.2 %Henry County: 6.3 %Highland County: 5.6 %Hocking County: 4.4 %Holmes County: 3.5 %Huron County: 6.5 %Jackson County: 5.6 %Jefferson County: 7.7 %Knox County: 9.4 %Lake County: 11.2 %Lawrence County: 6.9 %Licking County: 9.8 %Logan County: 6 %Lorain County: 10.7 %Lucas County: 11.3 %Madison County: 7.5 %Mahoning County: 9.7 %Marion County: 5.1 %Medina County: 12.4 %Meigs County: 3.7 %Mercer County: 7.9 %Miami County: 10.7 %Monroe County: 4.8 %Montgomery County: 12.9 %Morgan County: 3.7 %Morrow County: 6.1 %Muskingum County: 7.7 %Noble County: 5.5 %Ottawa County: 11.4 %Paulding County: 5.7 %Perry County: 5 %Pickaway County: 7.6 %Pike County: 5.4 %Portage County: 12.7 %Preble County: 6.9 %Putnam County: 8.4 %Richland County: 6.4 %Ross County: 6.6 %Sandusky County: 5.5 %Scioto County: 6.6 %Seneca County: 7.6 %Shelby County: 7.1 %Stark County: 9.2 %Summit County: 13.4 %Trumbull County: 6.9 %Tuscarawas County: 6.7 %Union County: 13.7 %Van Wert County: 5.6 %Vinton County: 4.7 %Warren County: 18.4 %Washington County: 8.3 %Wayne County: 9.4 %Williams County: 4.5 %Wood County: 14.9 %Wyandot County: 7.9 %
  • Under 5.4
  • 5.4 to 6.4
  • 6.4 to 7.4
  • 7.4 to 9.1
  • 9.1 to 12
  • 12 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: 24 %Delaware County24Greene County: 20.1 %Greene County20.1Athens County: 18.6 %Athens County18.6Warren County: 18.4 %Warren County18.4Hamilton County: 16.9 %Hamilton County16.9Franklin County: 16.3 %Franklin County16.3Geauga County: 15.8 %Geauga County15.8Cuyahoga County: 15.7 %Cuyahoga County15.7Wood County: 14.9 %Wood County14.9Union County: 13.7 %Union County13.7Summit County: 13.4 %Summit County13.4Montgomery County: 12.9 %Montgomery County12.9Portage County: 12.7 %Portage County12.7Medina County: 12.4 %Medina County12.4Clermont County: 12.1 %Clermont County12.1Butler County: 11.7 %Butler County11.7Fairfield County: 11.7 %Fairfield County11.7Hancock County: 11.4 %Hancock County11.4Ottawa County: 11.4 %Ottawa County11.4Lucas County: 11.3 %Lucas County11.3Lake County: 11.2 %Lake County11.2Lorain County: 10.7 %Lorain County10.7Miami County: 10.7 %Miami County10.7Erie County: 9.9 %Erie County9.9Licking County: 9.8 %Licking County9.8Mahoning County: 9.7 %Mahoning County9.7Knox County: 9.4 %Knox County9.4Wayne County: 9.4 %Wayne County9.4Stark County: 9.2 %Stark County9.2Gallia County: 9.1 %Gallia County9.1Putnam County: 8.4 %Putnam County8.4Washington County: 8.3 %Washington County8.3Auglaize County: 8.3 %Auglaize County8.3Mercer County: 7.9 %Mercer County7.9Fulton County: 7.9 %Fulton County7.9Wyandot County: 7.9 %Wyandot County7.9Allen County: 7.9 %Allen County7.9Muskingum County: 7.7 %Muskingum County7.7Jefferson County: 7.7 %Jefferson County7.7Pickaway County: 7.6 %Pickaway County7.6Delaware County: 24 %Delaware County24Greene County: 20.1 %Greene County20.1Athens County: 18.6 %Athens County18.6Warren County: 18.4 %Warren County18.4Hamilton County: 16.9 %Hamilton County16.9Franklin County: 16.3 %Franklin County16.3Geauga County: 15.8 %Geauga County15.8Cuyahoga County: 15.7 %Cuyahoga County15.7Wood County: 14.9 %Wood County14.9Union County: 13.7 %Union County13.7Summit County: 13.4 %Summit County13.4Montgomery County: 12.9 %Montgomery County12.9Portage County: 12.7 %Portage County12.7Medina County: 12.4 %Medina County12.4Clermont County: 12.1 %Clermont County12.1Butler County: 11.7 %Butler County11.7Fairfield County: 11.7 %Fairfield County11.7Hancock County: 11.4 %Hancock County11.4Ottawa County: 11.4 %Ottawa County11.4Lucas County: 11.3 %Lucas County11.3Lake County: 11.2 %Lake County11.2Lorain County: 10.7 %Lorain County10.7Miami County: 10.7 %Miami County10.7Erie County: 9.9 %Erie County9.9Licking County: 9.8 %Licking County9.8Mahoning County: 9.7 %Mahoning County9.7Knox County: 9.4 %Knox County9.4Wayne County: 9.4 %Wayne County9.4Stark County: 9.2 %Stark County9.2Gallia County: 9.1 %Gallia County9.1Putnam County: 8.4 %Putnam County8.4Washington County: 8.3 %Washington County8.3Auglaize County: 8.3 %Auglaize County8.3Mercer County: 7.9 %Mercer County7.9Fulton County: 7.9 %Fulton County7.9Wyandot County: 7.9 %Wyandot County7.9Allen County: 7.9 %Allen County7.9Muskingum County: 7.7 %Muskingum County7.7Jefferson County: 7.7 %Jefferson County7.7Pickaway County: 7.6 %Pickaway County7.6
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2024 (%)Change on 2023
1Delaware County24+0.4 pts
2Greene County20.1+0.4 pts
3Athens County18.6-0.2 pts
4Warren County18.4+0.2 pts
5Hamilton County16.9+0.2 pts
6Franklin County16.30 pts
7Geauga County15.8+1.3 pts
8Cuyahoga County15.7+0.3 pts
9Wood County14.9-0.2 pts
10Union County13.7-0.1 pts
11Summit County13.4+0.4 pts
12Montgomery County12.9+0.6 pts
13Portage County12.7-0 pts
14Medina County12.40 pts
15Clermont County12.1+0.5 pts
16Butler County11.7-0 pts
17Fairfield County11.7+0.5 pts
18Hancock County11.4+0.2 pts
19Ottawa County11.4+0.4 pts
20Lucas County11.3+0.4 pts
21Lake County11.2+0.6 pts
22Lorain County10.7+0.2 pts
23Miami County10.7+0.7 pts
24Erie County9.9+0.7 pts
25Licking County9.8+0.3 pts
26Mahoning County9.7+0.2 pts
27Knox County9.4+0.8 pts
28Wayne County9.4-0.3 pts
29Stark County9.2+0.4 pts
30Gallia County9.1+1.4 pts
31Putnam County8.4+0.1 pts
32Washington County8.3+0.9 pts
33Auglaize County8.3+0.3 pts
34Mercer County7.9-0.1 pts
35Fulton County7.9+1 pts
36Wyandot County7.9-0.1 pts
37Allen County7.9+0.4 pts
38Muskingum County7.7-0 pts
39Jefferson County7.7+0.5 pts
40Pickaway County7.6+1 pts
41Seneca County7.60 pts
42Clark County7.5+0.5 pts
42Madison County7.5+0.4 pts
44Ashland County7.4-0 pts
45Belmont County7.3+0.2 pts
46Shelby County7.1+0.1 pts
47Adams County7.1+0.2 pts
48Preble County6.9-0.2 pts
48Trumbull County6.9+0.1 pts
50Crawford County6.9+0.9 pts
50Hardin County6.9+0.5 pts
52Lawrence County6.9-0 pts
53Tuscarawas County6.7+0.7 pts
54Clinton County6.7-0.9 pts
55Ross County6.6+0.5 pts
56Scioto County6.6+0.1 pts
57Defiance County6.5-0.6 pts
57Huron County6.5+0.5 pts
59Richland County6.4-0.2 pts
60Carroll County6.3+1.4 pts
61Henry County6.30 pts
62Morrow County6.1+0.8 pts
63Logan County6+0.1 pts
64Columbiana County5.9+0.6 pts
65Ashtabula County5.8+0.4 pts
66Paulding County5.7+0.5 pts
67Highland County5.6+0.2 pts
67Van Wert County5.6-0.7 pts
69Jackson County5.6-0.2 pts
70Guernsey County5.6+0.4 pts
71Noble County5.5+1.2 pts
72Sandusky County5.5-0.1 pts
73Pike County5.4+0.7 pts
74Darke County5.4-0 pts
75Coshocton County5.3-0.2 pts
76Champaign County5.2-1.1 pts
77Brown County5.1-0.5 pts
78Marion County5.1+0.8 pts
79Perry County5+0.7 pts
80Fayette County4.8+0.3 pts
81Monroe County4.8+1.3 pts
82Vinton County4.7+0.2 pts
83Williams County4.5-0.3 pts
84Hocking County4.4-0.2 pts
85Harrison County4.2-0.2 pts
86Meigs County3.7+0.1 pts
87Morgan County3.7-0.9 pts
88Holmes County3.5-0 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/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 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, 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 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, 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/graduate-or-professional-degree/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 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, 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/graduate-or-professional-degree/ohio-counties.

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, 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/graduate-or-professional-degree/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 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, 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/graduate-or-professional-degree/ohio-counties. 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/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 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, 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/graduate-or-professional-degree/ohio-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/graduate-or-professional-degree/ohio-counties.
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/2024/table-based-SF/data/5YRData/acsdt5y2024-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 24% in 2024, according to the U.S. Census Bureau.

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

Holmes County, with 3.5% 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 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