Counties in Kentucky by median age on 1 July (US county estimates), 2025

Lyon County had the highest median age on 1 July (US county estimates) of 120 counties in 2025, at 48.5 years. Christian County had the lowest, at 30.3 years. The median was 41.7 years. Source: the U.S. Census Bureau.

Highest48.5Lyon County

Lowest30.3Christian County

Median41.7120 counties

Top 40 counties, 2025

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	2025 years	Change on 2024
1	Lyon County	48.5	0
2	Livingston County	47.2	-0.1
3	Marshall County	46.6	+0.2
4	Hickman County	46.4	-0.8
5	Robertson County	46.2	+0.4
6	Trigg County	45.6	-0.4
7	Cumberland County	45.4	+0.1
8	Ballard County	45.2	-0.1
9	Green County	44.5	+0.2
10	Crittenden County	44.4	+0.7
10	Leslie County	44.4	+0.2
10	Pike County	44.4	0
13	Estill County	44.3	0
13	Greenup County	44.3	+0.2
15	Wayne County	44.2	0
16	Edmonson County	43.9	0
16	Letcher County	43.9	0
16	Magoffin County	43.9	+0.1
16	Trimble County	43.9	0
20	Menifee County	43.8	-0.1
21	Caldwell County	43.7	0
22	Elliott County	43.6	+0.2
23	Breathitt County	43.5	+0.1
23	Woodford County	43.5	0
25	Knott County	43.3	0
25	Rockcastle County	43.3	0
27	Johnson County	43.2	0
27	Owsley County	43.2	-0.5
29	Breckinridge County	43.1	-0.1
29	McLean County	43.1	-0.1
29	Russell County	43.1	+0.3
32	Clinton County	43	-0.1
33	Floyd County	42.9	+0.1
33	Mercer County	42.9	-0.2
35	Boyd County	42.8	+0.1
35	Hancock County	42.8	+0.3
35	Lawrence County	42.8	0
35	Owen County	42.8	-0.3
35	Pulaski County	42.8	-0.1
40	Fulton County	42.7	0
40	Garrard County	42.7	-0.2
40	Spencer County	42.7	+0.1
43	Carter County	42.6	-0.1
43	McCracken County	42.6	+0.2
45	Bourbon County	42.5	+0.2
45	Lee County	42.5	-0.2
45	Metcalfe County	42.5	-0.1
45	Union County	42.5	+0.8
49	Mason County	42.4	0
49	Pendleton County	42.4	+0.2
51	Bracken County	42.3	0
51	Henry County	42.3	+0.1
51	Lewis County	42.3	-0.2
51	Perry County	42.3	+0.1
55	Larue County	42.2	+0.2
56	Muhlenberg County	42.1	-0.1
57	Harlan County	42	0
58	Carlisle County	41.9	-0.2
58	Harrison County	41.9	-0.1
60	Anderson County	41.7	0
60	Bullitt County	41.7	+0.1
60	Casey County	41.7	0
60	Henderson County	41.7	+0.1
60	Washington County	41.7	-0.1
60	Wolfe County	41.7	-0.5
66	Hopkins County	41.6	-0.1
66	Jackson County	41.6	-0.1
68	Monroe County	41.5	-0.4
68	Ohio County	41.5	+0.3
70	Lincoln County	41.4	-0.1
71	Butler County	41.2	0
72	Franklin County	41.1	0
72	Oldham County	41.1	+0.2
74	Clark County	41	-0.1
74	Grayson County	41	-0.3
74	Marion County	41	0
77	Allen County	40.9	+0.1
77	Laurel County	40.9	+0.1
77	Morgan County	40.9	-0.2
77	Powell County	40.9	+0.1
81	Nelson County	40.8	0
82	Barren County	40.7	-0.1
82	Bell County	40.7	-0.5
84	Clay County	40.6	-0.1
84	Fleming County	40.6	-0.1
86	Adair County	40.5	-0.1
86	Shelby County	40.5	+0.1
88	Boyle County	40.4	0
88	Knox County	40.4	+0.2
88	Martin County	40.4	-0.1
88	Webster County	40.4	-0.1
92	Graves County	40.3	-0.1
93	Logan County	40.2	0
94	Meade County	40.1	+0.3
95	Nicholas County	40	-0.6
96	Montgomery County	39.9	+0.1
97	Hart County	39.8	-0.3
98	McCreary County	39.6	-0.1
99	Campbell County	39.3	-0.1
100	Bath County	39.2	-0.1
100	Simpson County	39.2	-0.4
102	Gallatin County	39.1	-0.3
103	Daviess County	39	0
104	Jefferson County	38.9	+0.2
105	Boone County	38.4	+0.2
105	Carroll County	38.4	+0.2
105	Hardin County	38.4	+0.1
108	Taylor County	38.2	0
109	Kenton County	38.1	+0.1
110	Jessamine County	38	-0.1
111	Grant County	37.3	-0.4
112	Whitley County	37.1	0
113	Scott County	36.7	+0.2
114	Fayette County	36	+0.1
114	Todd County	36	-0.4
116	Calloway County	35.5	-0.4
117	Madison County	35.1	-0.1
118	Rowan County	34	+0.6
118	Warren County	34	+0.1
120	Christian County	30.3	+0.5

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), 2025) [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), 2025. 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. 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), 2025. 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.

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), 2025 [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 (Accessed: 12 October 2026).

BibTeX

@misc{census_counties_in_kentucky_by_2025,
  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), 2025}},
  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. 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), 2025
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
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/median-age-july-1-us-counties/kentucky-counties.
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 2025, according to the U.S. Census Bureau.

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

Christian County, with 30.3 years in 2025.

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.