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

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

Oldham County had the highest high school graduate or higher, population 25 and over of 120 counties in 2021, at 93.9%. Wolfe County had the lowest, at 65.9%. The median was 85% and the figure for Kentucky was 87.7%. Source: the U.S. Census Bureau.

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Highest93.9Oldham County
Lowest65.9Wolfe County
Median85120 counties
Kentucky87.7History

Map of counties, 2021

Adair County: 85.2 %Allen County: 85.9 %Anderson County: 91.1 %Ballard County: 89.2 %Barren County: 84.2 %Bath County: 82 %Bell County: 75.3 %Boone County: 93.2 %Bourbon County: 85.8 %Boyd County: 88.3 %Boyle County: 89.7 %Bracken County: 88.9 %Breathitt County: 77.5 %Breckinridge County: 86.1 %Bullitt County: 89.5 %Butler County: 80.8 %Caldwell County: 86.9 %Calloway County: 90.2 %Campbell County: 93 %Carlisle County: 85.3 %Carroll County: 80.8 %Carter County: 79.5 %Casey County: 74.5 %Christian County: 86.2 %Clark County: 89.2 %Clay County: 68.4 %Clinton County: 78.1 %Crittenden County: 85.8 %Cumberland County: 79.6 %Daviess County: 90.9 %Edmonson County: 80.9 %Elliott County: 75.1 %Estill County: 74.3 %Fayette County: 92.4 %Fleming County: 81.3 %Floyd County: 77.1 %Franklin County: 90.6 %Fulton County: 80 %Gallatin County: 85 %Garrard County: 85.5 %Grant County: 88.3 %Graves County: 89.5 %Grayson County: 83.2 %Green County: 80.8 %Greenup County: 90.2 %Hancock County: 85.5 %Hardin County: 92 %Harlan County: 74.9 %Harrison County: 85 %Hart County: 78 %Henderson County: 88.5 %Henry County: 84.3 %Hickman County: 88.7 %Hopkins County: 87.7 %Jackson County: 71.3 %Jefferson County: 91.3 %Jessamine County: 89.7 %Johnson County: 83.1 %Kenton County: 91.6 %Knott County: 70.4 %Knox County: 76 %Larue County: 80.8 %Laurel County: 82.5 %Lawrence County: 76.4 %Lee County: 72.9 %Leslie County: 83.5 %Letcher County: 77 %Lewis County: 77.2 %Lincoln County: 82.4 %Livingston County: 86.4 %Logan County: 87.5 %Lyon County: 89.2 %McCracken County: 92.4 %McCreary County: 78 %McLean County: 90 %Madison County: 89.7 %Magoffin County: 72.1 %Marion County: 85.3 %Marshall County: 91.8 %Martin County: 73.7 %Mason County: 86.1 %Meade County: 89.3 %Menifee County: 76.6 %Mercer County: 88.1 %Metcalfe County: 81.5 %Monroe County: 80.7 %Montgomery County: 85.4 %Morgan County: 76.9 %Muhlenberg County: 83.4 %Nelson County: 92.1 %Nicholas County: 81.1 %Ohio County: 81.3 %Oldham County: 93.9 %Owen County: 82.9 %Owsley County: 68.5 %Pendleton County: 83.4 %Perry County: 77.8 %Pike County: 78.9 %Powell County: 82 %Pulaski County: 83.4 %Robertson County: 84.7 %Rockcastle County: 80.4 %Rowan County: 86.9 %Russell County: 81.9 %Scott County: 93.6 %Shelby County: 87.1 %Simpson County: 89.5 %Spencer County: 92.1 %Taylor County: 87.1 %Todd County: 79.2 %Trigg County: 88.9 %Trimble County: 83.9 %Union County: 91.3 %Warren County: 87.8 %Washington County: 86.7 %Wayne County: 77.2 %Webster County: 85.2 %Whitley County: 82.5 %Wolfe County: 65.9 %Woodford County: 91.8 %
  • Under 77
  • 77 to 81
  • 81 to 85
  • 85 to 87
  • 87 to 90
  • 90 and over
%, 2021. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2021

Oldham County: 93.9 %Oldham County93.9Scott County: 93.6 %Scott County93.6Boone County: 93.2 %Boone County93.2Campbell County: 93 %Campbell County93McCracken County: 92.4 %McCracken County92.4Fayette County: 92.4 %Fayette County92.4Nelson County: 92.1 %Nelson County92.1Spencer County: 92.1 %Spencer County92.1Hardin County: 92 %Hardin County92Woodford County: 91.8 %Woodford County91.8Marshall County: 91.8 %Marshall County91.8Kenton County: 91.6 %Kenton County91.6Union County: 91.3 %Union County91.3Jefferson County: 91.3 %Jefferson County91.3Anderson County: 91.1 %Anderson County91.1Daviess County: 90.9 %Daviess County90.9Franklin County: 90.6 %Franklin County90.6Calloway County: 90.2 %Calloway County90.2Greenup County: 90.2 %Greenup County90.2McLean County: 90 %McLean County90Boyle County: 89.7 %Boyle County89.7Jessamine County: 89.7 %Jessamine County89.7Madison County: 89.7 %Madison County89.7Bullitt County: 89.5 %Bullitt County89.5Simpson County: 89.5 %Simpson County89.5Graves County: 89.5 %Graves County89.5Meade County: 89.3 %Meade County89.3Clark County: 89.2 %Clark County89.2Lyon County: 89.2 %Lyon County89.2Ballard County: 89.2 %Ballard County89.2Trigg County: 88.9 %Trigg County88.9Bracken County: 88.9 %Bracken County88.9Hickman County: 88.7 %Hickman County88.7Henderson County: 88.5 %Henderson County88.5Grant County: 88.3 %Grant County88.3Boyd County: 88.3 %Boyd County88.3Mercer County: 88.1 %Mercer County88.1Warren County: 87.8 %Warren County87.8Hopkins County: 87.7 %Hopkins County87.7Logan County: 87.5 %Logan County87.5Oldham County: 93.9 %Oldham County93.9Scott County: 93.6 %Scott County93.6Boone County: 93.2 %Boone County93.2Campbell County: 93 %Campbell County93McCracken County: 92.4 %McCracken County92.4Fayette County: 92.4 %Fayette County92.4Nelson County: 92.1 %Nelson County92.1Spencer County: 92.1 %Spencer County92.1Hardin County: 92 %Hardin County92Woodford County: 91.8 %Woodford County91.8Marshall County: 91.8 %Marshall County91.8Kenton County: 91.6 %Kenton County91.6Union County: 91.3 %Union County91.3Jefferson County: 91.3 %Jefferson County91.3Anderson County: 91.1 %Anderson County91.1Daviess County: 90.9 %Daviess County90.9Franklin County: 90.6 %Franklin County90.6Calloway County: 90.2 %Calloway County90.2Greenup County: 90.2 %Greenup County90.2McLean County: 90 %McLean County90Boyle County: 89.7 %Boyle County89.7Jessamine County: 89.7 %Jessamine County89.7Madison County: 89.7 %Madison County89.7Bullitt County: 89.5 %Bullitt County89.5Simpson County: 89.5 %Simpson County89.5Graves County: 89.5 %Graves County89.5Meade County: 89.3 %Meade County89.3Clark County: 89.2 %Clark County89.2Lyon County: 89.2 %Lyon County89.2Ballard County: 89.2 %Ballard County89.2Trigg County: 88.9 %Trigg County88.9Bracken County: 88.9 %Bracken County88.9Hickman County: 88.7 %Hickman County88.7Henderson County: 88.5 %Henderson County88.5Grant County: 88.3 %Grant County88.3Boyd County: 88.3 %Boyd County88.3Mercer County: 88.1 %Mercer County88.1Warren County: 87.8 %Warren County87.8Hopkins County: 87.7 %Hopkins County87.7Logan County: 87.5 %Logan County87.5
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2021 (%)
1Oldham County93.9
2Scott County93.6
3Boone County93.2
4Campbell County93
5McCracken County92.4
6Fayette County92.4
7Nelson County92.1
7Spencer County92.1
9Hardin County92
10Woodford County91.8
11Marshall County91.8
12Kenton County91.6
13Union County91.3
14Jefferson County91.3
15Anderson County91.1
16Daviess County90.9
17Franklin County90.6
18Calloway County90.2
19Greenup County90.2
20McLean County90
21Boyle County89.7
22Jessamine County89.7
23Madison County89.7
24Bullitt County89.5
25Simpson County89.5
26Graves County89.5
27Meade County89.3
28Clark County89.2
28Lyon County89.2
30Ballard County89.2
31Trigg County88.9
32Bracken County88.9
33Hickman County88.7
34Henderson County88.5
35Grant County88.3
36Boyd County88.3
37Mercer County88.1
38Warren County87.8
39Hopkins County87.7
40Logan County87.5
41Taylor County87.1
42Shelby County87.1
43Caldwell County86.9
44Rowan County86.9
45Washington County86.7
46Livingston County86.4
47Christian County86.2
48Mason County86.1
49Breckinridge County86.1
50Allen County85.9
51Bourbon County85.8
52Crittenden County85.8
53Hancock County85.5
54Garrard County85.5
55Montgomery County85.4
56Carlisle County85.3
57Marion County85.3
58Webster County85.2
59Adair County85.2
60Harrison County85
61Gallatin County85
62Robertson County84.7
63Henry County84.3
64Barren County84.2
65Trimble County83.9
66Leslie County83.5
67Pulaski County83.4
68Pendleton County83.4
69Muhlenberg County83.4
70Grayson County83.2
71Johnson County83.1
72Owen County82.9
73Whitley County82.5
74Laurel County82.5
75Lincoln County82.4
76Bath County82
77Powell County82
78Russell County81.9
79Metcalfe County81.5
80Fleming County81.3
80Ohio County81.3
82Nicholas County81.1
83Edmonson County80.9
84Butler County80.8
85Green County80.8
85Larue County80.8
87Carroll County80.8
88Monroe County80.7
89Rockcastle County80.4
90Fulton County80
91Cumberland County79.6
92Carter County79.5
93Todd County79.2
94Pike County78.9
95Clinton County78.1
96Hart County78
97McCreary County78
98Perry County77.8
99Breathitt County77.5
100Wayne County77.2
101Lewis County77.2
102Floyd County77.1
103Letcher County77
104Morgan County76.9
105Menifee County76.6
106Lawrence County76.4
107Knox County76
108Bell County75.3
109Elliott County75.1
110Harlan County74.9
111Casey County74.5
112Estill County74.3
113Martin County73.7
114Lee County72.9
115Magoffin County72.1
116Jackson County71.3
117Knott County70.4
118Owsley County68.5
119Clay County68.4
120Wolfe County65.9

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/2021/table-based-SF/data/5YRData/acsdt5y2021-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 Kentucky by high school graduate or higher, population 25 and over, 2021) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-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 Kentucky by high school graduate or higher, population 25 and over, 2021. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b15003.dat. Invokely, https://invokely.ai/rankings/high-school-graduate-or-higher/kentucky-counties?period=2021. 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 Kentucky by high school graduate or higher, population 25 and over, 2021. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b15003.dat. Also distributed by Invokely, https://invokely.ai/rankings/high-school-graduate-or-higher/kentucky-counties?period=2021.

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 Kentucky by high school graduate or higher, population 25 and over, 2021 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b15003.dat, via Invokely: https://invokely.ai/rankings/high-school-graduate-or-higher/kentucky-counties?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_kentucky_by_2021,
  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 Kentucky by high school graduate or higher, population 25 and over, 2021}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b15003.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/high-school-graduate-or-higher/kentucky-counties?period=2021. 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/2021/table-based-SF/data/5YRData/acsdt5y2021-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 Kentucky by high school graduate or higher, population 25 and over, 2021
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b15003.dat
L2  - https://invokely.ai/rankings/high-school-graduate-or-higher/kentucky-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/high-school-graduate-or-higher/kentucky-counties?period=2021.
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/2021/table-based-SF/data/5YRData/acsdt5y2021-b15003.dat. Retrieved 2026-10-12.
ER  -
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Rank Counties in Kentucky by high school graduate or higher, population 25 and over using official data, and cite the source.
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Questions

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

Oldham County, with 93.9% in 2021, according to the U.S. Census Bureau.

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

Wolfe County, with 65.9% in 2021.

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 Kentucky: more rankings