Data / Rankings / Median age on 1 July (US county estimates) / US counties

US counties by median age on 1 July (US county estimates)

Sumter County had the highest median age on 1 July (US county estimates) of 3144 counties in 2023, at 68.1 years. Lexington city had the lowest, at 22.3 years. The median was 42.1 years. Source: the U.S. Census Bureau.

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Highest68.1Sumter County
Lowest22.3Lexington city
Median42.13144 counties

Map of counties, 2023

years, 2023. 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. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2023

Sumter County: 68.1 yearsSumter County68.1Kalawao County: 64.1 yearsKalawao County64.1Catron County: 62.2 yearsCatron County62.2McCormick County: 61.8 yearsMcCormick County61.8Jeff Davis County: 61.3 yearsJeff Davis County61.3Jefferson County: 61.1 yearsJefferson County61.1Charlotte County: 60.4 yearsCharlotte County60.4Lancaster County: 59.9 yearsLancaster County59.9Northumberland County: 59.6 yearsNorthumberland County59.6Highland County: 59.5 yearsHighland County59.5Ontonagon County: 59.5 yearsOntonagon County59.5Towns County: 59 yearsTowns County59Alcona County: 58.9 yearsAlcona County58.9Wheeler County: 58.8 yearsWheeler County58.8Curry County: 58.6 yearsCurry County58.6Harding County: 58.6 yearsHarding County58.6Hamilton County: 58.5 yearsHamilton County58.5Vilas County: 58 yearsVilas County58Citrus County: 57.9 yearsCitrus County57.9Florence County: 57.8 yearsFlorence County57.8Sarasota County: 57.7 yearsSarasota County57.7Brunswick County: 57.4 yearsBrunswick County57.4Llano County: 57.4 yearsLlano County57.4Aitkin County: 57.3 yearsAitkin County57.3Roscommon County: 57.3 yearsRoscommon County57.3Iron County: 57.2 yearsIron County57.2Sierra County: 57.2 yearsSierra County57.2Clay County: 57.1 yearsClay County57.1Keweenaw County: 57.1 yearsKeweenaw County57.1Custer County: 56.8 yearsCuster County56.8Montmorency County: 56.7 yearsMontmorency County56.7Hinsdale County: 56.6 yearsHinsdale County56.6Union County: 56.6 yearsUnion County56.6Burnett County: 56.5 yearsBurnett County56.5Custer County: 56.5 yearsCuster County56.5San Juan County: 56.5 yearsSan Juan County56.5Barnstable County: 56.4 yearsBarnstable County56.4Presque Isle County: 56.2 yearsPresque Isle County56.2Huerfano County: 56 yearsHuerfano County56Carroll County: 55.9 yearsCarroll County55.9Sumter County: 68.1 yearsSumter County68.1Kalawao County: 64.1 yearsKalawao County64.1Catron County: 62.2 yearsCatron County62.2McCormick County: 61.8 yearsMcCormick County61.8Jeff Davis County: 61.3 yearsJeff Davis County61.3Jefferson County: 61.1 yearsJefferson County61.1Charlotte County: 60.4 yearsCharlotte County60.4Lancaster County: 59.9 yearsLancaster County59.9Northumberland County: 59.6 yearsNorthumberland County59.6Highland County: 59.5 yearsHighland County59.5Ontonagon County: 59.5 yearsOntonagon County59.5Towns County: 59 yearsTowns County59Alcona County: 58.9 yearsAlcona County58.9Wheeler County: 58.8 yearsWheeler County58.8Curry County: 58.6 yearsCurry County58.6Harding County: 58.6 yearsHarding County58.6Hamilton County: 58.5 yearsHamilton County58.5Vilas County: 58 yearsVilas County58Citrus County: 57.9 yearsCitrus County57.9Florence County: 57.8 yearsFlorence County57.8Sarasota County: 57.7 yearsSarasota County57.7Brunswick County: 57.4 yearsBrunswick County57.4Llano County: 57.4 yearsLlano County57.4Aitkin County: 57.3 yearsAitkin County57.3Roscommon County: 57.3 yearsRoscommon County57.3Iron County: 57.2 yearsIron County57.2Sierra County: 57.2 yearsSierra County57.2Clay County: 57.1 yearsClay County57.1Keweenaw County: 57.1 yearsKeweenaw County57.1Custer County: 56.8 yearsCuster County56.8Montmorency County: 56.7 yearsMontmorency County56.7Hinsdale County: 56.6 yearsHinsdale County56.6Union County: 56.6 yearsUnion County56.6Burnett County: 56.5 yearsBurnett County56.5Custer County: 56.5 yearsCuster County56.5San Juan County: 56.5 yearsSan Juan County56.5Barnstable County: 56.4 yearsBarnstable County56.4Presque Isle County: 56.2 yearsPresque Isle County56.2Huerfano County: 56 yearsHuerfano County56Carroll County: 55.9 yearsCarroll County55.9
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

RankCounties2023
years		Change on 2022
1Sumter County68.1-0.2
2Kalawao County64.1+3.6
3Catron County62.2+0.2
4McCormick County61.8+1.1
5Jeff Davis County61.3+0.8
6Jefferson County61.1+0.5
7Charlotte County60.40
8Lancaster County59.9+0.2
9Northumberland County59.6+0.3
10Highland County59.5-0.3
10Ontonagon County59.5+0.2
12Towns County59+0.4
13Alcona County58.9+0.3
14Wheeler County58.80
15Curry County58.6+0.5
15Harding County58.6-0.5
17Hamilton County58.5+0.4
18Vilas County58+0.5
19Citrus County57.90
20Florence County57.8+0.8
21Sarasota County57.7+0.1
22Brunswick County57.4+0.3
22Llano County57.40
24Aitkin County57.3+0.3
24Roscommon County57.3+0.2
26Iron County57.2-0.2
26Sierra County57.2-0.1
28Clay County57.1+0.2
28Keweenaw County57.1+0.4
30Custer County56.8-0.6
31Montmorency County56.70
32Hinsdale County56.6+0.1
32Union County56.6+0.4
34Burnett County56.5+0.5
34Custer County56.5+0.4
34San Juan County56.5+0.4
37Barnstable County56.4+0.4
38Presque Isle County56.2+0.1
39Huerfano County56+0.2
40Carroll County55.9+0.3
40Indian River County55.9+0.2
40Pamlico County55.9-0.1
40Yavapai County55.90
44Leelanau County55.8+0.2
44Mineral County55.8-1.5
46Douglas County55.7+0.3
47Door County55.6+0.4
47Fall River County55.6+0.5
47Middlesex County55.6+0.2
50Petroleum County55.40
51Bayfield County55.2+0.3
52La Paz County55.1+0.3
52Mathews County55.1-0.2
54Boyd County55+0.2
55Adams County54.9+0.1
55Quitman County54.9+0.6
55Sullivan County54.9+0.1
58Hickory County54.7-0.2
59Ouray County54.6+0.4
60Highlands County54.4-0.2
60Mora County54.4-0.1
60Pacific County54.4+0.3
60Sanders County54.4-0.2
60Sierra County54.4+0.1
65Cherokee County54.3+0.1
66Cumberland County54.2+0.1
66Polk County54.2+0.3
66Pope County54.2+0.2
69Flagler County54.1+0.1
69Mohave County54.1+0.1
71Oneida County54+0.4
71Prairie County54+0.7
71Sabine County540
71Sawyer County54+0.6
75Mason County53.9+0.3
75Real County53.9-0.1
75Stone County53.9-0.1
78Charles City County53.8+0.3
78Cook County53.8+0.4
78Fannin County53.8-0.2
78Iosco County53.8+0.2
78Lincoln County53.8+0.3
78Wahkiakum County53.80
84Garden County53.7+0.8
84Georgetown County53.7+0.4
84Greene County53.7+0.7
84Lincoln County53.7+0.1
84Price County53.7+0.3
89Benton County53.6+0.1
89Clallam County53.6+0.1
89Martin County53.6+0.1
89Northampton County53.6+0.3
89Washburn County53.6+0.1
94Storey County53.5-0.7
95Mackinac County53.4+0.2
95Oscoda County53.4-0.4
95Schoolcraft County53.4+0.4
98Adams County53.3-0.3
98Collier County53.30
98Iron County53.3-0.3
101Esmeralda County53.2+1.2
101Franklin County53.2+0.8
101Plumas County53.20
101Rappahannock County53.20
105Nelson County53.1-0.2
106Boise County53+0.4
106Cape May County53+0.5
106Potter County53+0.4
109Marion County52.9-0.4
109Nelson County52.9+0.4
111Bandera County52.8-0.3
111Blanco County52.8+0.1
111Menard County52.80
111Nye County52.8-0.5
115Gillespie County52.70
115Kent County52.7-0.3
117Lincoln County52.6+0.2
117Lincoln County52.60
117Sussex County52.6+0.5
120Camden County52.5+0.3
120Grant County52.5-0.4
120Northampton County52.5+0.1
123Blaine County52.4+1.7
123Marion County52.40
125Custer County52.3+0.1
125Lake County52.3+0.5
127Antrim County52.2+0.2
127Archuleta County52.2-0.1
127Gila County52.20
127Lemhi County52.2-0.1
131Baxter County52.1+0.1
132Bath County52+0.3
132Pendleton County52-0.1
134Campbell County51.9-0.2
134Clearwater County51.9-0.2
134Loup County51.9+0.5
134Teller County51.9+0.6
138Alleghany County51.80
138Aransas County51.8+0.3
138Cameron County51.8-0.2
138Edwards County51.8+1.1
138Kimble County51.8+0.2
138Pickett County51.8+0.2
138Stonewall County51.8-1.5
138Talbot County51.8+0.3
146Benzie County51.7+0.4
146Brown County51.7+0.2
146Carteret County51.7+0.4
146Deuel County51.7+0.9
146Dundy County51.7+1.3
146Essex County51.7+0.2
146Gogebic County51.7+0.4
146Surry County51.7-0.2
154Foard County51.6+0.4
154Judith Basin County51.6+0.6
154Mineral County51.6-0.2
154Slope County51.6+1.8
154Wells County51.6-0.6
159Newton County51.5+0.1
159Patrick County51.5+0.3
161Columbia County51.4-0.8
161Macon County51.4+0.1
161Madison County51.4-0.7
161McIntosh County51.4-0.8
161Sheridan County51.4-0.6
161Taos County51.4+0.4
167Cheboygan County51.3-0.1
167Grand Isle County51.3+0.6
167Jo Daviess County51.3+0.2
167Lake of the Woods County51.3+1
167McPherson County51.30
167Piscataquis County51.3+0.1
173Adams County51.2-1.3
173Fairfield County51.2+0.2
173Ottawa County51.2+0.4
176Hardin County51.1-0.5
176Ogemaw County51.1+0.1
178Alpine County510
178Charlevoix County51+0.3
178Crawford County51+0.1
181Amador County50.9-0.4
181Coos County50.9+0.4
181Costilla County50.9-1.1
181Gladwin County50.9-0.1
181Goochland County50.9+0.8
181Meagher County50.90
181Worcester County50.9+0.1
188Ashe County50.8+0.3
188Grant County50.8+0.4
188Henderson County50.8+0.1
188Lake County50.8+0.3
188Talbot County50.8-0.1
188Transylvania County50.8-0.1
188Tucker County50.80
188Twiggs County50.8-0.1
188Wallowa County50.8-0.7
197Granite County50.7-1.7
197Mills County50.7-0.3
197Ozark County50.7+0.2
197Westmoreland County50.7+0.1
201Dare County50.6+0.3
201Dukes County50.6+0.4
201Emmons County50.6-0.7
201Grant County50.6-0.2
201Koochiching County50.6+0.1
201Perquimans County50.6+0.1
207Calaveras County50.5-0.1
207Cass County50.5+0.2
207Cleburne County50.50
207Idaho County50.5-0.3
207Loudon County50.5-0.1
207Manistee County50.5-0.3
207Mariposa County50.5-0.5
207McIntosh County50.5-0.1
207Montgomery County50.5-0.1
207Rabun County50.5+0.2
217Arenac County50.4-0.2
217Deer Lodge County50.4+0.3
217Gilmer County50.4+0.2
217Jewell County50.4-0.1
217Smith County50.4-0.8
217Van Buren County50.4+0.2
217Waushara County50.4+0.2
224Belknap County50.3+0.3
224Golden Valley County50.3-0.7
224Horry County50.3+0.4
224Hot Springs County50.3+0.3
224Knox County50.3+0.2
224Marquette County50.3-0.1
230Alleghany County50.20
230De Baca County50.2-0.2
230Kerr County50.20
230Kimball County50.2-0.1
230Pend Oreille County50.2-0.3
230Taliaferro County50.2-0.6
230Washington County50.2+0.1
237Dickens County50.1+1
237Elk County50.1-0.4
237Monroe County50.1+0.1
237Warren County50.1-0.1
241Columbia County50+0.4
241Forest County50+0.1
241Huron County50+0.1
241Langlade County50+0.2
241Menominee County50+0.2
241Pocahontas County50-0.1
247Coosa County49.9+0.5
247McPherson County49.9+1
249Colfax County49.8-0.2
249Ferry County49.8-0.5

Showing the top 250 of 3144. The Excel download has every row.

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 (US counties by median age on 1 July (US county estimates), 2023) [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, US counties by median age on 1 July (US county estimates), 2023. 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/us-counties?period=2023. 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. US counties by median age on 1 July (US county estimates), 2023. 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/us-counties?period=2023.

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, US counties by median age on 1 July (US county estimates), 2023 [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/us-counties?period=2023 (Accessed: 12 October 2026).

BibTeX
@misc{census_us_counties_by_median_2023,
  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: US counties by median age on 1 July (US county estimates), 2023}},
  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/us-counties?period=2023. 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: US counties by median age on 1 July (US county estimates), 2023
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/us-counties?period=2023
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/median-age-july-1-us-counties/us-counties?period=2023.
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)?

Sumter County, with 68.1 years in 2023, according to the U.S. Census Bureau.

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

Lexington city, with 22.3 years 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, 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.

Median age on 1 July (US county estimates): other rankings

US counties: more rankings