Data / Rankings / Median age on 1 July (US county estimates) / Counties in Minnesota

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

Aitkin County had the highest median age on 1 July (US county estimates) of 87 counties in 2018, at 55.5 years. Blue Earth County had the lowest, at 32 years. The median was 42.2 years. Source: the U.S. Census Bureau.

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Highest55.5Aitkin County
Lowest32Blue Earth County
Median42.287 counties

Map of counties, 2018

Aitkin County: 55.5 yearsAnoka County: 38.4 yearsBecker County: 42.8 yearsBeltrami County: 35.1 yearsBenton County: 36.4 yearsBig Stone County: 47.8 yearsBlue Earth County: 32 yearsBrown County: 43.1 yearsCarlton County: 41.7 yearsCarver County: 38 yearsCass County: 49.6 yearsChippewa County: 41.6 yearsChisago County: 40.7 yearsClay County: 33.3 yearsClearwater County: 42.9 yearsCook County: 52.8 yearsCottonwood County: 43.3 yearsCrow Wing County: 44.5 yearsDakota County: 38.3 yearsDodge County: 38.5 yearsDouglas County: 43.8 yearsFaribault County: 45 yearsFillmore County: 42.8 yearsFreeborn County: 44 yearsGoodhue County: 42.8 yearsGrant County: 43.6 yearsHennepin County: 36.2 yearsHouston County: 45.1 yearsHubbard County: 47.7 yearsIsanti County: 39.7 yearsItasca County: 46.5 yearsJackson County: 43.8 yearsKanabec County: 45.4 yearsKandiyohi County: 39.2 yearsKittson County: 48.1 yearsKoochiching County: 49.1 yearsLac qui Parle County: 48.7 yearsLake County: 50.6 yearsLake of the Woods County: 50.9 yearsLe Sueur County: 41 yearsLincoln County: 46 yearsLyon County: 36.8 yearsMcLeod County: 41.3 yearsMahnomen County: 38 yearsMarshall County: 43.2 yearsMartin County: 45.2 yearsMeeker County: 42.7 yearsMille Lacs County: 41.4 yearsMorrison County: 42.2 yearsMower County: 38.5 yearsMurray County: 47.4 yearsNicollet County: 37 yearsNobles County: 35.1 yearsNorman County: 44.1 yearsOlmsted County: 37 yearsOtter Tail County: 46.5 yearsPennington County: 39.2 yearsPine County: 44.7 yearsPipestone County: 42 yearsPolk County: 39.2 yearsPope County: 46.4 yearsRamsey County: 35.2 yearsRed Lake County: 42.7 yearsRedwood County: 41.3 yearsRenville County: 44 yearsRice County: 37.1 yearsRock County: 41.2 yearsRoseau County: 42.7 yearsSt. Louis County: 41.2 yearsScott County: 36.9 yearsSherburne County: 36.5 yearsSibley County: 41.7 yearsStearns County: 36 yearsSteele County: 39.6 yearsStevens County: 34.5 yearsSwift County: 42.7 yearsTodd County: 41.7 yearsTraverse County: 47.1 yearsWabasha County: 45.4 yearsWadena County: 42.6 yearsWaseca County: 40.3 yearsWashington County: 39.6 yearsWatonwan County: 39.2 yearsWilkin County: 42.7 yearsWinona County: 36.4 yearsWright County: 37 yearsYellow Medicine County: 42.3 years
  • Under 37
  • 37 to 40
  • 40 to 42
  • 42 to 43
  • 43 to 46
  • 46 and over
years, 2018. 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, 2018

Aitkin County: 55.5 yearsAitkin County55.5Cook County: 52.8 yearsCook County52.8Lake of the Woods County: 50.9 yearsLake of the Woods County50.9Lake County: 50.6 yearsLake County50.6Cass County: 49.6 yearsCass County49.6Koochiching County: 49.1 yearsKoochiching County49.1Lac qui Parle County: 48.7 yearsLac qui Parle County48.7Kittson County: 48.1 yearsKittson County48.1Big Stone County: 47.8 yearsBig Stone County47.8Hubbard County: 47.7 yearsHubbard County47.7Murray County: 47.4 yearsMurray County47.4Traverse County: 47.1 yearsTraverse County47.1Itasca County: 46.5 yearsItasca County46.5Otter Tail County: 46.5 yearsOtter Tail County46.5Pope County: 46.4 yearsPope County46.4Lincoln County: 46 yearsLincoln County46Kanabec County: 45.4 yearsKanabec County45.4Wabasha County: 45.4 yearsWabasha County45.4Martin County: 45.2 yearsMartin County45.2Houston County: 45.1 yearsHouston County45.1Faribault County: 45 yearsFaribault County45Pine County: 44.7 yearsPine County44.7Crow Wing County: 44.5 yearsCrow Wing County44.5Norman County: 44.1 yearsNorman County44.1Freeborn County: 44 yearsFreeborn County44Renville County: 44 yearsRenville County44Douglas County: 43.8 yearsDouglas County43.8Jackson County: 43.8 yearsJackson County43.8Grant County: 43.6 yearsGrant County43.6Cottonwood County: 43.3 yearsCottonwood County43.3Marshall County: 43.2 yearsMarshall County43.2Brown County: 43.1 yearsBrown County43.1Clearwater County: 42.9 yearsClearwater County42.9Becker County: 42.8 yearsBecker County42.8Fillmore County: 42.8 yearsFillmore County42.8Goodhue County: 42.8 yearsGoodhue County42.8Meeker County: 42.7 yearsMeeker County42.7Red Lake County: 42.7 yearsRed Lake County42.7Roseau County: 42.7 yearsRoseau County42.7Swift County: 42.7 yearsSwift County42.7Aitkin County: 55.5 yearsAitkin County55.5Cook County: 52.8 yearsCook County52.8Lake of the Woods County: 50.9 yearsLake of the Woods County50.9Lake County: 50.6 yearsLake County50.6Cass County: 49.6 yearsCass County49.6Koochiching County: 49.1 yearsKoochiching County49.1Lac qui Parle County: 48.7 yearsLac qui Parle County48.7Kittson County: 48.1 yearsKittson County48.1Big Stone County: 47.8 yearsBig Stone County47.8Hubbard County: 47.7 yearsHubbard County47.7Murray County: 47.4 yearsMurray County47.4Traverse County: 47.1 yearsTraverse County47.1Itasca County: 46.5 yearsItasca County46.5Otter Tail County: 46.5 yearsOtter Tail County46.5Pope County: 46.4 yearsPope County46.4Lincoln County: 46 yearsLincoln County46Kanabec County: 45.4 yearsKanabec County45.4Wabasha County: 45.4 yearsWabasha County45.4Martin County: 45.2 yearsMartin County45.2Houston County: 45.1 yearsHouston County45.1Faribault County: 45 yearsFaribault County45Pine County: 44.7 yearsPine County44.7Crow Wing County: 44.5 yearsCrow Wing County44.5Norman County: 44.1 yearsNorman County44.1Freeborn County: 44 yearsFreeborn County44Renville County: 44 yearsRenville County44Douglas County: 43.8 yearsDouglas County43.8Jackson County: 43.8 yearsJackson County43.8Grant County: 43.6 yearsGrant County43.6Cottonwood County: 43.3 yearsCottonwood County43.3Marshall County: 43.2 yearsMarshall County43.2Brown County: 43.1 yearsBrown County43.1Clearwater County: 42.9 yearsClearwater County42.9Becker County: 42.8 yearsBecker County42.8Fillmore County: 42.8 yearsFillmore County42.8Goodhue County: 42.8 yearsGoodhue County42.8Meeker County: 42.7 yearsMeeker County42.7Red Lake County: 42.7 yearsRed Lake County42.7Roseau County: 42.7 yearsRoseau County42.7Swift County: 42.7 yearsSwift County42.7
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

RankCounties2018
years		Change on 2017
1Aitkin County55.5+0.3
2Cook County52.8+0.3
3Lake of the Woods County50.9-0.3
4Lake County50.6-0.3
5Cass County49.6+0.4
6Koochiching County49.1+0.1
7Lac qui Parle County48.7-0.3
8Kittson County48.1-0.5
9Big Stone County47.8-0.7
10Hubbard County47.7-0.3
11Murray County47.4+0.3
12Traverse County47.1-0.5
13Itasca County46.5+0.4
13Otter Tail County46.5-0.1
15Pope County46.40
16Lincoln County460
17Kanabec County45.4+0.2
17Wabasha County45.4+0.3
19Martin County45.2-0.2
20Houston County45.1-0.2
21Faribault County45-0.3
22Pine County44.7+0.1
23Crow Wing County44.50
24Norman County44.1+0.4
25Freeborn County440
25Renville County44-0.5
27Douglas County43.8-0.2
27Jackson County43.80
29Grant County43.60
30Cottonwood County43.3-0.2
31Marshall County43.2-0.5
32Brown County43.1+0.1
33Clearwater County42.9+0.2
34Becker County42.8+0.2
34Fillmore County42.8-0.1
34Goodhue County42.8+0.2
37Meeker County42.7+0.1
37Red Lake County42.70
37Roseau County42.7+0.6
37Swift County42.7-0.5
37Wilkin County42.7+0.1
42Wadena County42.6-0.6
43Yellow Medicine County42.3-0.1
44Morrison County42.2+0.2
45Pipestone County42-0.3
46Carlton County41.70
46Sibley County41.70
46Todd County41.7-0.2
49Chippewa County41.6-0.4
50Mille Lacs County41.4+0.2
51McLeod County41.3+0.2
51Redwood County41.3-0.7
53Rock County41.2+0.1
53St. Louis County41.2+0.1
55Le Sueur County410
56Chisago County40.7+0.1
57Waseca County40.3+0.3
58Isanti County39.7+0.2
59Steele County39.6+0.3
59Washington County39.6+0.1
61Kandiyohi County39.20
61Pennington County39.2-0.2
61Polk County39.2+0.3
61Watonwan County39.2-0.5
65Dodge County38.5+0.3
65Mower County38.5-0.2
67Anoka County38.4+0.1
68Dakota County38.3+0.2
69Carver County38+0.3
69Mahnomen County38+0.8
71Rice County37.1+0.1
72Nicollet County37+0.3
72Olmsted County370
72Wright County37+0.3
75Scott County36.9+0.4
76Lyon County36.8+0.6
77Sherburne County36.5+0.2
78Benton County36.4+0.2
78Winona County36.4+0.5
80Hennepin County36.2+0.1
81Stearns County36+0.4
82Ramsey County35.2+0.1
83Beltrami County35.1+0.5
83Nobles County35.1-0.3
85Stevens County34.5+0.2
86Clay County33.3+0.3
87Blue Earth County32+0.4

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 Minnesota by median age on 1 July (US county estimates), 2018) [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 Minnesota by median age on 1 July (US county estimates), 2018. 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/minnesota-counties?period=2018. 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 Minnesota by median age on 1 July (US county estimates), 2018. 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/minnesota-counties?period=2018.

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 Minnesota by median age on 1 July (US county estimates), 2018 [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/minnesota-counties?period=2018 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_minnesota_by_2018,
  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 Minnesota by median age on 1 July (US county estimates), 2018}},
  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/minnesota-counties?period=2018. 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 Minnesota by median age on 1 July (US county estimates), 2018
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/minnesota-counties?period=2018
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/median-age-july-1-us-counties/minnesota-counties?period=2018.
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)?

Aitkin County, with 55.5 years in 2018, according to the U.S. Census Bureau.

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

Blue Earth County, with 32 years in 2018.

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

Counties in Minnesota: more rankings