Data / Rankings / Median age / Counties in Ohio

Counties in Ohio by median age

Noble County had the highest median age of 88 counties in 2021, at 51.5 years. Athens County had the lowest, at 30.5 years. The median was 41.1 years and the figure for Ohio was 39.4 years. Source: the U.S. Census Bureau.

Highest51.5Noble County
Lowest30.5Athens County
Median41.188 counties
Ohio39.4History

Top 40 counties, 2021

CSVChart (SVG)

Noble CountyNoble County: 51.5 years51.5Ottawa CountyOttawa County: 49.6 years49.6Monroe CountyMonroe County: 46.3 years46.3Harrison CountyHarrison County: 46.2 years46.2Carroll CountyCarroll County: 46.1 years46.1Erie CountyErie County: 44.8 years44.8Morgan CountyMorgan County: 44.7 years44.7Geauga CountyGeauga County: 44.6 years44.6Jefferson CountyJefferson County: 44.6 years44.6Washington CountyWashington County: 44.3 years44.3Belmont CountyBelmont County: 44.2 years44.2Columbiana CountyColumbiana County: 44.2 years44.2Trumbull CountyTrumbull County: 44.2 years44.2Lake CountyLake County: 43.9 years43.9Vinton CountyVinton County: 43.4 years43.4Mahoning CountyMahoning County: 43.2 years43.2Crawford CountyCrawford County: 43.1 years43.1Preble CountyPreble County: 43.1 years43.1Meigs CountyMeigs County: 42.8 years42.8Ashtabula CountyAshtabula County: 42.6 years42.6Medina CountyMedina County: 42.6 years42.6Morrow CountyMorrow County: 42.6 years42.6Hocking CountyHocking County: 42.5 years42.5Guernsey CountyGuernsey County: 42.4 years42.4Wyandot CountyWyandot County: 42.3 years42.3Adams CountyAdams County: 42.1 years42.1Sandusky CountySandusky County: 42.1 years42.1Brown CountyBrown County: 42 years42Lorain CountyLorain County: 41.9 years41.9Stark CountyStark County: 41.9 years41.9Lawrence CountyLawrence County: 41.8 years41.8Champaign CountyChampaign County: 41.7 years41.7Darke CountyDarke County: 41.6 years41.6Logan CountyLogan County: 41.5 years41.5Madison CountyMadison County: 41.5 years41.5Paulding CountyPaulding County: 41.5 years41.5Henry CountyHenry County: 41.4 years41.4Richland CountyRichland County: 41.3 years41.3Ross CountyRoss County: 41.3 years41.3Van Wert CountyVan Wert County: 41.3 years41.3
years. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

RankCounties2021
years
1Noble County51.5
2Ottawa County49.6
3Monroe County46.3
4Harrison County46.2
5Carroll County46.1
6Erie County44.8
7Morgan County44.7
8Geauga County44.6
8Jefferson County44.6
10Washington County44.3
11Belmont County44.2
11Columbiana County44.2
11Trumbull County44.2
14Lake County43.9
15Vinton County43.4
16Mahoning County43.2
17Crawford County43.1
17Preble County43.1
19Meigs County42.8
20Ashtabula County42.6
20Medina County42.6
20Morrow County42.6
23Hocking County42.5
24Guernsey County42.4
25Wyandot County42.3
26Adams County42.1
26Sandusky County42.1
28Brown County42
29Lorain County41.9
29Stark County41.9
31Lawrence County41.8
32Champaign County41.7
33Darke County41.6
34Logan County41.5
34Madison County41.5
34Paulding County41.5
37Henry County41.4
38Richland County41.3
38Ross County41.3
38Van Wert County41.3
41Clark County41.2
41Marion County41.2
41Williams County41.2
44Fulton County41.1
44Pike County41.1
46Fayette County41
46Miami County41
46Perry County41
46Summit County41
50Tuscarawas County40.9
51Ashland County40.8
51Coshocton County40.8
53Gallia County40.7
54Defiance County40.6
54Highland County40.6
56Seneca County40.5
57Clinton County40.4
57Muskingum County40.4
59Auglaize County40.3
59Cuyahoga County40.3
61Scioto County40.2
62Clermont County40.1
62Licking County40.1
62Putnam County40.1
65Huron County39.9
66Jackson County39.7
66Shelby County39.7
68Warren County39.6
69Allen County39.5
69Fairfield County39.5
71Delaware County39.4
71Mercer County39.4
71Pickaway County39.4
74Hancock County39.3
75Knox County39.2
76Montgomery County39
77Wayne County38.9
78Portage County38.7
79Union County38.4
80Greene County38.3
81Lucas County38.2
82Butler County37
83Hamilton County36.7
84Hardin County36.1
85Wood County35.1
86Franklin County34.4
87Holmes County32.1
88Athens County30.5

Other periods

About this ranking

Age that divides the resident population into two halves of equal size. Spain and the EU: on 1 January. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

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. American Community Survey 5-year estimates, table B01002: median age, total population. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b01002.dat. Retrieved 2026-10-08.

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Questions

Which county has the highest median age?

Noble County, with 51.5 years in 2021, according to the U.S. Census Bureau.

Which county has the lowest median age?

Athens County, with 30.5 years in 2021.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B01002: median age, total population. Retrieved 2026-10-08.

Median age: other rankings

Counties in Ohio: more rankings