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 3135 counties in 2016, at 66.9 years. Lexington city had the lowest, at 22.8 years. The median was 41.6 years. Source: the U.S. Census Bureau.

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Highest66.9Sumter County
Lowest22.8Lexington city
Median41.63135 counties

Map of counties, 2016

years, 2016. Hatched areas have no value for this period. 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, 2016

Sumter County: 66.9 yearsSumter County66.9Catron County: 60.9 yearsCatron County60.9Charlotte County: 58.7 yearsCharlotte County58.7Alcona County: 58 yearsAlcona County58Jefferson County: 57.9 yearsJefferson County57.9Ontonagon County: 57.6 yearsOntonagon County57.6Harding County: 57.5 yearsHarding County57.5Lancaster County: 57.5 yearsLancaster County57.5Custer County: 57.2 yearsCuster County57.2Northumberland County: 57.2 yearsNorthumberland County57.2Citrus County: 56.9 yearsCitrus County56.9Llano County: 56.5 yearsLlano County56.5Jeff Davis County: 56.4 yearsJeff Davis County56.4Sierra County: 56.4 yearsSierra County56.4Highland County: 56.2 yearsHighland County56.2Mineral County: 56.2 yearsMineral County56.2Curry County: 56.1 yearsCurry County56.1Wheeler County: 56.1 yearsWheeler County56.1Kalawao County: 56 yearsKalawao County56Montmorency County: 55.9 yearsMontmorency County55.9Keweenaw County: 55.7 yearsKeweenaw County55.7Roscommon County: 55.7 yearsRoscommon County55.7Sarasota County: 55.7 yearsSarasota County55.7San Juan County: 55.6 yearsSan Juan County55.6Huerfano County: 55.5 yearsHuerfano County55.5Hickory County: 55.3 yearsHickory County55.3Hamilton County: 55.2 yearsHamilton County55.2Towns County: 55.1 yearsTowns County55.1Iron County: 55 yearsIron County55Vilas County: 55 yearsVilas County55Aitkin County: 54.9 yearsAitkin County54.9Presque Isle County: 54.7 yearsPresque Isle County54.7Adams County: 54.6 yearsAdams County54.6Sierra County: 54.6 yearsSierra County54.6La Paz County: 54.5 yearsLa Paz County54.5McCormick County: 54.5 yearsMcCormick County54.5Nelson County: 54.5 yearsNelson County54.5Storey County: 54.4 yearsStorey County54.4Custer County: 54.3 yearsCuster County54.3Hinsdale County: 54.1 yearsHinsdale County54.1Sumter County: 66.9 yearsSumter County66.9Catron County: 60.9 yearsCatron County60.9Charlotte County: 58.7 yearsCharlotte County58.7Alcona County: 58 yearsAlcona County58Jefferson County: 57.9 yearsJefferson County57.9Ontonagon County: 57.6 yearsOntonagon County57.6Harding County: 57.5 yearsHarding County57.5Lancaster County: 57.5 yearsLancaster County57.5Custer County: 57.2 yearsCuster County57.2Northumberland County: 57.2 yearsNorthumberland County57.2Citrus County: 56.9 yearsCitrus County56.9Llano County: 56.5 yearsLlano County56.5Jeff Davis County: 56.4 yearsJeff Davis County56.4Sierra County: 56.4 yearsSierra County56.4Highland County: 56.2 yearsHighland County56.2Mineral County: 56.2 yearsMineral County56.2Curry County: 56.1 yearsCurry County56.1Wheeler County: 56.1 yearsWheeler County56.1Kalawao County: 56 yearsKalawao County56Montmorency County: 55.9 yearsMontmorency County55.9Keweenaw County: 55.7 yearsKeweenaw County55.7Roscommon County: 55.7 yearsRoscommon County55.7Sarasota County: 55.7 yearsSarasota County55.7San Juan County: 55.6 yearsSan Juan County55.6Huerfano County: 55.5 yearsHuerfano County55.5Hickory County: 55.3 yearsHickory County55.3Hamilton County: 55.2 yearsHamilton County55.2Towns County: 55.1 yearsTowns County55.1Iron County: 55 yearsIron County55Vilas County: 55 yearsVilas County55Aitkin County: 54.9 yearsAitkin County54.9Presque Isle County: 54.7 yearsPresque Isle County54.7Adams County: 54.6 yearsAdams County54.6Sierra County: 54.6 yearsSierra County54.6La Paz County: 54.5 yearsLa Paz County54.5McCormick County: 54.5 yearsMcCormick County54.5Nelson County: 54.5 yearsNelson County54.5Storey County: 54.4 yearsStorey County54.4Custer County: 54.3 yearsCuster County54.3Hinsdale County: 54.1 yearsHinsdale County54.1
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

RankCounties2016
years		Change on 2015
1Sumter County66.9+0.6
2Catron County60.9+0.1
3Charlotte County58.7+0.5
4Alcona County58+0.2
5Jefferson County57.9+0.7
6Ontonagon County57.6+0.6
7Harding County57.5+1.4
7Lancaster County57.5+0.3
9Custer County57.2+0.3
9Northumberland County57.2+0.4
11Citrus County56.9+0.4
12Llano County56.5-0.1
13Jeff Davis County56.4+0.5
13Sierra County56.4+0.3
15Highland County56.2+0.1
15Mineral County56.2+0.2
17Curry County56.1+0.6
17Wheeler County56.1+1.1
19Kalawao County56+0.5
20Montmorency County55.9+0.3
21Keweenaw County55.7+0.7
21Roscommon County55.7+0.4
21Sarasota County55.7+0.6
24San Juan County55.6+0.5
25Huerfano County55.50
26Hickory County55.3-0.3
27Hamilton County55.2+0.9
28Towns County55.1+0.8
29Iron County55+0.6
29Vilas County55+0.7
31Aitkin County54.9+0.4
32Presque Isle County54.7+0.6
33Adams County54.6+0.4
33Sierra County54.6+0.8
35La Paz County54.5+0.4
35McCormick County54.5+0.8
35Nelson County54.5+1.2
38Storey County54.4+0.6
39Custer County54.3+0.3
40Hinsdale County54.1-0.8
40Union County54.1+0.3
42Iron County54+0.2
43Middlesex County53.9+0.2
44Esmeralda County53.8+0.8
44Leelanau County53.8+0.6
46Sanders County53.6+0.3
47Highlands County53.5+0.3
48Clay County53.4+0.5
48Meagher County53.4+0.8
48Mineral County53.4+1
48Motley County53.4+0.9
52Benton County53.3+0.4
52Custer County53.3+0.8
52Florence County53.3+0.7
52Real County53.3-0.5
52Rock County53.3+1.2
52Wahkiakum County53.3-0.2
58Mathews County53.2+0.4
58Yavapai County53.2+0.7
60Barnstable County53.1+0.5
60Door County53.1+0.5
60Madison County53.1+0.4
60McIntosh County53.1+0.5
60Oscoda County53.1+0.3
60Stone County53.1+0.5
66Brunswick County53+1.2
66Lincoln County53+0.6
66Nye County53+0.5
66Ouray County53+0.3
70Kent County52.9+0.8
71Fall River County52.8+0.1
71Iosco County52.8+0.2
71Menard County52.8-0.1
71Wallowa County52.80
75Bayfield County52.7+0.7
75Boise County52.7+0.4
75Lemhi County52.7+0.2
75Pacific County52.7+0.2
75Pamlico County52.7+0.4
75Plumas County52.7-0.2
81Bandera County52.6+0.5
81Baxter County52.6+0.3
81Burnett County52.6+0.4
81Carroll County52.6+0.6
81Indian River County52.6+0.7
81Sabine County52.6+0.2
87Adams County52.5+0.3
87Boyd County52.5+0.6
87Cook County52.5+0.2
87Marion County52.5-0.1
87Schoolcraft County52.5+1
92Campbell County52.4+0.6
92Mackinac County52.4+0.7
92Polk County52.4+0.6
95Gillespie County52.2+0.2
95Granite County52.2-0.2
95Grant County52.2+0.3
95Lincoln County52.2+0.2
99Elk County52.1+1
99Mariposa County52.1+0.1
101Garden County52+0.1
101Quitman County52+0.3
103Flagler County51.9+0.6
103Martin County51.9+0.4
105Douglas County51.8+0.8
105Jewell County51.8+0.4
105Judith Basin County51.8+0.7
105Price County51.8+0.6
105Sheridan County51.8-0.2
110Calaveras County51.70
110Lincoln County51.7+0.3
110Loup County51.7-1.6
110Potter County51.7+0.2
110Smith County51.7+0.3
115Amador County51.6+0.1
115Clallam County51.6+0.5
115Columbia County51.6+0.5
115Fannin County51.6+0.5
115Golden Valley County51.6-0.6
115Grant County51.6-0.2
121Alpine County51.5+1.7
121Griggs County51.50
121Mohave County51.5+0.7
121Pendleton County51.5+0.8
121Wells County51.5+0.3
126Decatur County51.4+1.1
126Emmons County51.4+0.3
126Kimble County51.40
129Lincoln County51.3+0.2
129Sullivan County51.3+0.2
131Oneida County51.2+0.3
131Pend Oreille County51.2+0.5
131Piscataquis County51.2+0.3
131Republic County51.2+0.5
131Washburn County51.2+0.6
136Archuleta County51.1-0.1
136Cumberland County51.1+0.5
136Marion County51.1+0.6
136Rappahannock County51.1+0.9
140Costilla County51-1.1
140Mason County51-1.1
142Adams County50.9+0.2
142Cameron County50.9+0.7
142Cherokee County50.9+0.1
142Ozark County50.9+0.6
146Charles City County50.8+0.6
146Coke County50.80
146Idaho County50.8+0.6
146Lake of the Woods County50.8+0.1
146Prairie County50.8-1.7
146Treasure County50.8-0.1
152Antrim County50.7+0.4
152Musselshell County50.7+0.2
152Pope County50.7+0.8
152Sawyer County50.7+0.3
156Camden County50.6+0.1
156Clearwater County50.6-0.2
158Blanco County50.5+0.2
158Collier County50.5+0.6
158Lake County50.5+0.2
158Nelson County50.5+0.3
158Teller County50.5+0.3
163Petroleum County50.4-2.1
164Garfield County50.3+0.8
164Lake County50.3-0.4
164Montgomery County50.3+0.6
164Ogemaw County50.3+0.2
164Talbot County50.3+1
164Transylvania County50.3+0.1
170Arenac County50.2+0.6
170Cheboygan County50.2+0.3
170Gila County50.2+0.2
170Greene County50.2+0.3
170McPherson County50.2-0.7
175Aransas County50.1+0.3
175Gladwin County50.1+0.3
175Jerauld County50.1-0.3
175Mora County50.1+0.8
179Cape May County50+0.5
179Crawford County50+0.3
179Deuel County50+1.3
179Essex County50-0.4
179Hardin County50+0.7
179Northampton County50+0.4
179Talbot County50+0.4
186Bath County49.9+0.5
186Benzie County49.9+0.1
186Edwards County49.9-0.5
186Ferry County49.9+0.7
186Nuckolls County49.9+0.3
186Worcester County49.9+0.3
192Carter County49.8-1
192Macon County49.8+0.2
192Towner County49.8+0.3
195Alger County49.7+0.2
195De Baca County49.7-0.2
195Franklin County49.7-0.6
195Marquette County49.7+0.2
199Carbon County49.60
199Cavalier County49.6+0.1
199Graham County49.6-0.3
199Harlan County49.6-0.4
199Henderson County49.6+0.7
199Hernando County49.6+0.1
199Nevada County49.6+0.3
199Northampton County49.6+0.6
199Rawlins County49.6-0.8
199Stone County49.6-0.2
199Trinity County49.6+0.1
210Foard County49.5+0.3
210Garfield County49.5-0.3
210Gilliam County49.5-0.5
210Keya Paha County49.5-0.3
210Marion County49.5+0.2
210Park County49.5-0.5
210Powder River County49.5-0.3
210San Augustine County49.5+0.8
210Surry County49.5+0.8
210Trinity County49.5-0.3
220Alleghany County49.4+0.2
220Hayes County49.4-0.2
220Hot Springs County49.40
220Lincoln County49.4+0.3
220Newton County49.4+0.1
220Patrick County49.4+0.5
220Wrangell City and Borough49.4+1
227Cleburne County49.3+0.6
227Dundy County49.3+0.7
227Georgetown County49.3+0.7
227Kerr County49.3+0.1
227Manistee County49.3+0.2
227Ness County49.3+0.2
227Pickett County49.3+0.9
234Cass County49.2+0.3
234Jo Daviess County49.2+0.4
234Lac qui Parle County49.20
234Logan County49.2-0.4
234Perquimans County49.2+0.2
234Pocahontas County49.2+0.1
234St. Clair County49.2-0.2
234Tuolumne County49.20
242Douglas County49.1+0.9
242Mecklenburg County49.1+0.4
242Mineral County49.10
242Valley County49.1-0.2
242Wood County49.1-0.1
247Blaine County490
247Chaffee County49-0.1
247Ravalli County49+0.1
247Rusk County49+0.4

Showing the top 250 of 3135. 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. 9 counties with data in other periods have no value for 2016 and are left out rather than filled from another source. 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), 2016) [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), 2016. 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=2016. 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), 2016. 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=2016.

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), 2016 [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=2016 (Accessed: 12 October 2026).

BibTeX
@misc{census_us_counties_by_median_2016,
  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), 2016}},
  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=2016. 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), 2016
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=2016
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/median-age-july-1-us-counties/us-counties?period=2016.
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 66.9 years in 2016, according to the U.S. Census Bureau.

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

Lexington city, with 22.8 years in 2016.

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. 9 counties have no value for 2016 and are not ranked.

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

US counties: more rankings