Counties in Kentucky by median age on 1 July (US county estimates)

Lyon County had the highest median age on 1 July (US county estimates) of 120 counties in 2024, at 48.5 years. Christian County had the lowest, at 29.8 years. The median was 41.8 years. Source: the U.S. Census Bureau.

Highest48.5Lyon County

Lowest29.8Christian County

Median41.8120 counties

Top 40 counties, 2024

years. Source: U.S. Census Bureau, Population Estimates Program, county population by age and sex: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage. Retrieved 2026-10-12.

Full ranking

Rank	Counties	2024 years	Change on 2023
1	Lyon County	48.5	+0.4
2	Livingston County	47.3	+0.5
3	Hickman County	47.2	-1.2
4	Marshall County	46.4	+0.3
5	Trigg County	46	-0.5
6	Robertson County	45.8	0
7	Ballard County	45.3	-0.1
7	Cumberland County	45.3	-0.4
9	Pike County	44.4	+0.3
10	Estill County	44.3	0
10	Green County	44.3	+0.1
12	Leslie County	44.2	+0.2
12	Wayne County	44.2	+0.3
14	Greenup County	44.1	0
15	Edmonson County	43.9	0
15	Letcher County	43.9	0
15	Menifee County	43.9	0
15	Trimble County	43.9	+0.6
19	Magoffin County	43.8	+0.2
20	Caldwell County	43.7	0
20	Crittenden County	43.7	-0.3
20	Owsley County	43.7	+0.3
23	Woodford County	43.5	+0.2
24	Breathitt County	43.4	+0.3
24	Elliott County	43.4	+0.1
26	Knott County	43.3	+0.1
26	Rockcastle County	43.3	-0.2
28	Breckinridge County	43.2	+0.3
28	Johnson County	43.2	+0.2
28	McLean County	43.2	0
31	Clinton County	43.1	+0.1
31	Mercer County	43.1	-0.3
31	Owen County	43.1	+0.1
34	Garrard County	42.9	0
34	Pulaski County	42.9	-0.2
36	Floyd County	42.8	+0.1
36	Lawrence County	42.8	+0.6
36	Russell County	42.8	-0.1
39	Boyd County	42.7	-0.1
39	Carter County	42.7	0
39	Fulton County	42.7	+0.2
39	Lee County	42.7	-0.2
43	Metcalfe County	42.6	+0.2
43	Spencer County	42.6	+0.3
45	Hancock County	42.5	-0.2
45	Lewis County	42.5	+0.5
47	Mason County	42.4	-0.1
47	McCracken County	42.4	0
49	Bourbon County	42.3	-0.3
49	Bracken County	42.3	+0.2
51	Henry County	42.2	+0.1
51	Muhlenberg County	42.2	0
51	Pendleton County	42.2	+0.1
51	Perry County	42.2	+0.1
51	Wolfe County	42.2	+0.2
56	Carlisle County	42.1	-0.6
57	Harlan County	42	-0.1
57	Harrison County	42	+0.1
57	Larue County	42	+0.6
60	Monroe County	41.9	+0.1
61	Washington County	41.8	+0.1
62	Anderson County	41.7	-0.1
62	Casey County	41.7	0
62	Hopkins County	41.7	0
62	Jackson County	41.7	-0.1
62	Union County	41.7	0
67	Bullitt County	41.6	+0.3
67	Henderson County	41.6	+0.1
69	Lincoln County	41.5	+0.1
70	Grayson County	41.3	-0.2
71	Bell County	41.2	-0.1
71	Butler County	41.2	-0.1
71	Ohio County	41.2	+0.1
74	Clark County	41.1	-0.2
74	Franklin County	41.1	-0.2
74	Morgan County	41.1	+0.1
77	Marion County	41	+0.1
78	Oldham County	40.9	+0.3
79	Allen County	40.8	+0.2
79	Barren County	40.8	-0.1
79	Laurel County	40.8	+0.2
79	Nelson County	40.8	-0.1
79	Powell County	40.8	+0.3
84	Clay County	40.7	-0.1
84	Fleming County	40.7	-0.4
86	Adair County	40.6	+0.2
86	Nicholas County	40.6	-0.8
88	Martin County	40.5	+0.2
88	Webster County	40.5	-0.3
90	Boyle County	40.4	0
90	Graves County	40.4	-0.1
90	Shelby County	40.4	+0.1
93	Knox County	40.2	-0.1
93	Logan County	40.2	+0.1
95	Hart County	40.1	-0.1
96	Meade County	39.8	+0.1
96	Montgomery County	39.8	0
98	McCreary County	39.7	+0.1
99	Simpson County	39.6	-0.1
100	Campbell County	39.4	+0.3
100	Gallatin County	39.4	0
102	Bath County	39.3	-0.1
103	Daviess County	39	0
104	Jefferson County	38.7	-0.1
105	Hardin County	38.3	+0.2
106	Boone County	38.2	+0.2
106	Carroll County	38.2	-0.1
106	Taylor County	38.2	-0.2
109	Jessamine County	38.1	-0.1
110	Kenton County	38	0
111	Grant County	37.7	+0.1
112	Whitley County	37.1	0
113	Scott County	36.5	+0.1
114	Todd County	36.4	-0.6
115	Calloway County	35.9	-0.1
115	Fayette County	35.9	+0.1
117	Madison County	35.2	0
118	Warren County	33.9	+0.1
119	Rowan County	33.4	+0.2
120	Christian County	29.8	-0.1

Other periods

About this ranking

Age that divides the resident population of a US county into two halves of equal size on 1 July, from Census Bureau population estimates calculated by single year of age.

Counties only: the county file has no state or national medians, and medians cannot be added up. A single-year estimate, unlike median_age, which for US places is a five-year American Community Survey estimate.

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. Population Estimates Program, county population by age and sex: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage. https://www.census.gov/programs-surveys/popest/data/data-sets.html. 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). Population Estimates Program, county population by age and sex: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage (Counties in Kentucky by median age on 1 July (US county estimates), 2024) [Data set]. Retrieved October 12, 2026, from https://www.census.gov/programs-surveys/popest/data/data-sets.html

MLA 9

Population Estimates Program, county population by age and sex: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage, Counties in Kentucky by median age on 1 July (US county estimates), 2024. U.S. Census Bureau, 25 June 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/median-age-july-1-us-counties/kentucky-counties?period=2024. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Population Estimates Program, county population by age and sex: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage. Counties in Kentucky by median age on 1 July (US county estimates), 2024. Dataset. Accessed October 12, 2026. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Also distributed by Invokely, https://invokely.ai/rankings/median-age-july-1-us-counties/kentucky-counties?period=2024.

Harvard

U.S. Census Bureau (2026) Population Estimates Program, county population by age and sex: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage, Counties in Kentucky by median age on 1 July (US county estimates), 2024 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/median-age-july-1-us-counties/kentucky-counties?period=2024 (Accessed: 12 October 2026).

BibTeX

@misc{census_counties_in_kentucky_by_2024,
  author = {{U.S. Census Bureau}},
  title = {{Population Estimates Program, county population by age and sex: median age (MEDIAN\_AGE\_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage: Counties in Kentucky by median age on 1 July (US county estimates), 2024}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www.census.gov/programs-surveys/popest/data/data-sets.html},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/median-age-july-1-us-counties/kentucky-counties?period=2024. Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: median age (MEDIAN\_AGE\_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.},
}

RIS

TY  - DATA
AU  - U.S. Census Bureau
TI  - Population Estimates Program, county population by age and sex: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage: Counties in Kentucky by median age on 1 July (US county estimates), 2024
PY  - 2026
DA  - 2026/06/25
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www.census.gov/programs-surveys/popest/data/data-sets.html
L2  - https://invokely.ai/rankings/median-age-july-1-us-counties/kentucky-counties?period=2024
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/median-age-july-1-us-counties/kentucky-counties?period=2024.
N1  - Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.
ER  -

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Questions

Which county has the highest median age on 1 July (US county estimates)?

Lyon County, with 48.5 years in 2024, according to the U.S. Census Bureau.

Which county has the lowest median age on 1 July (US county estimates)?

Christian County, with 29.8 years 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, Population Estimates Program, county population by age and sex: median age (MEDIAN_AGE_TOT) on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage. Retrieved 2026-10-12.