US Census Data

Oldest by median age in Iowa

Iowa counties and cities ranked by median age.

This page ranks the counties and cities of Iowa by median age — which have the highest median age, according to the US Census Bureau's American Community Survey 5-year estimates.

Among counties, Dickinson County leads at 48.1 yrs.

Among cities & places, Conway leads at 85.8 yrs.

Counties

#NameMedian age
1Dickinson County48.1 yrs
2Audubon County47.4 yrs
3Adams County46.6 yrs
4Guthrie County46.5 yrs
5Clayton County46.4 yrs
6Fremont County46.4 yrs
7Appanoose County45.5 yrs
8Sac County45.3 yrs
9Hardin County45.2 yrs
10Shelby County45.1 yrs
11Kossuth County45.0 yrs
12Page County45.0 yrs
13Greene County44.8 yrs
14Van Buren County44.8 yrs
15Monona County44.7 yrs
16Hancock County44.6 yrs
17Ringgold County44.6 yrs
18Cherokee County44.5 yrs
19Worth County44.3 yrs
20Floyd County44.2 yrs
21Jackson County44.2 yrs
22Cass County44.0 yrs
23Delaware County44.0 yrs
24Cerro Gordo County43.9 yrs
25Pocahontas County43.9 yrs
26Cedar County43.8 yrs
27Montgomery County43.8 yrs
28Butler County43.7 yrs
29Fayette County43.7 yrs
30Lee County43.7 yrs
31Taylor County43.6 yrs
32Chickasaw County43.5 yrs
33Jefferson County43.5 yrs
34Osceola County43.5 yrs
35Benton County43.3 yrs
36Emmet County43.3 yrs
37Lucas County43.3 yrs
38Allamakee County43.1 yrs
39Jones County43.0 yrs
40Keokuk County42.8 yrs
41Calhoun County42.7 yrs
42Adair County42.6 yrs
43Mills County42.6 yrs
44Clinton County42.5 yrs
45Ida County42.3 yrs
46Boone County42.2 yrs
47Des Moines County42.2 yrs
48Hamilton County42.2 yrs
49Iowa County42.2 yrs
50Mitchell County42.2 yrs
51Winneshiek County42.2 yrs
52Monroe County42.1 yrs
53Wayne County42.0 yrs
54Franklin County41.9 yrs
55Harrison County41.9 yrs
56Carroll County41.8 yrs
57Clay County41.8 yrs
58Humboldt County41.8 yrs
59Louisa County41.8 yrs
60Tama County41.8 yrs
61Winnebago County41.7 yrs
62Grundy County41.5 yrs
63Palo Alto County41.5 yrs
64Jasper County41.4 yrs
65Plymouth County41.1 yrs
66Madison County41.0 yrs
67Poweshiek County40.8 yrs
68Union County40.6 yrs
69Henry County40.5 yrs
70Washington County40.3 yrs
71Pottawattamie County40.1 yrs
72Buchanan County39.9 yrs
73Wapello County39.9 yrs
74O'Brien County39.8 yrs
75Webster County39.8 yrs
76Wright County39.8 yrs
77Marion County39.7 yrs
78Howard County39.3 yrs
79Mahaska County39.1 yrs
80Muscatine County39.1 yrs
81Scott County39.0 yrs
82Dubuque County38.8 yrs
83Marshall County38.7 yrs
84Warren County38.7 yrs
85Bremer County38.6 yrs
86Linn County38.5 yrs
87Clarke County38.4 yrs
88Lyon County38.1 yrs
89Crawford County37.9 yrs
90Davis County36.2 yrs
91Decatur County36.2 yrs
92Polk County36.2 yrs
93Woodbury County36.2 yrs
94Dallas County35.8 yrs
95Black Hawk County35.7 yrs
96Buena Vista County35.7 yrs
97Sioux County34.0 yrs
98Johnson County30.8 yrs
99Story County27.0 yrs

Cities & places

Top 100.
#NameMedian age
1Conway85.8 yrs
2St. Joseph73.4 yrs
3Garden City72.9 yrs
4Mona72.3 yrs
5Fairport70.4 yrs
6Augusta70.1 yrs
7Sun Valley Lake69.7 yrs
8Beaconsfield69.5 yrs
9Jolley69.5 yrs
10Maharishi Vedic City69.5 yrs
11Bassett69.4 yrs
12Otranto69.1 yrs
13Carbon68.5 yrs
14Owasa68.5 yrs
15Hayesville68.0 yrs
16Lone Rock67.7 yrs
17Harpers Ferry66.6 yrs
18Walnut66.6 yrs
19Redding66.3 yrs
20Jackson Junction66.2 yrs
21Wiota65.7 yrs
22Unionville65.5 yrs
23Plover65.1 yrs
24Downey64.9 yrs
25Toronto64.6 yrs
26Clio64.3 yrs
27Arnolds Park64.2 yrs
28Bevington63.8 yrs
29Green Mountain63.3 yrs
30Ricketts63.3 yrs
31Aspinwall62.9 yrs
32Rodman62.5 yrs
33Armstrong62.3 yrs
34Randalia62.3 yrs
35Big Rock62.1 yrs
36Hardy61.8 yrs
37Northboro61.7 yrs
38Berkley61.5 yrs
39Curlew61.3 yrs
40Ledyard61.3 yrs
41Twin Lakes61.3 yrs
42Millersburg61.2 yrs
43Kingston60.5 yrs
44Lewis60.5 yrs
45Thornburg60.5 yrs
46Center Junction60.4 yrs
47Tingley60.4 yrs
48West Okoboji60.4 yrs
49Harris60.3 yrs
50Nodaway60.3 yrs
51St. Donatus60.3 yrs
52Thompson60.3 yrs
53Varina60.3 yrs
54Lanesboro60.1 yrs
55Springbrook60.1 yrs
56Riverton60.0 yrs
57Elkport59.9 yrs
58Grandview59.9 yrs
59Granville59.9 yrs
60Swaledale59.8 yrs
61Argyle59.7 yrs
62Castana59.7 yrs
63Pacific Junction59.7 yrs
64Rochester59.7 yrs
65Charter Oak59.5 yrs
66Castalia59.3 yrs
67Fertile59.3 yrs
68Little Sioux59.3 yrs
69Stratford59.3 yrs
70West Amana59.2 yrs
71Douds59.1 yrs
72Sandusky59.1 yrs
73Monmouth59.0 yrs
74Westphalia59.0 yrs
75Montpelier58.9 yrs
76Mallard58.7 yrs
77Tennant58.6 yrs
78Gruver58.5 yrs
79Weldon58.5 yrs
80Soldier58.4 yrs
81Buffalo Center58.2 yrs
82Osterdock58.1 yrs
83Clayton58.0 yrs
84Craig58.0 yrs
85Matlock57.9 yrs
86Orleans57.7 yrs
87Guttenberg57.6 yrs
88Oak Hills57.5 yrs
89Beaman57.4 yrs
90Rembrandt57.2 yrs
91Stacyville57.1 yrs
92Diamondhead Lake57.0 yrs
93Kensett56.9 yrs
94Washta56.9 yrs
95Russell56.8 yrs
96Mapleton56.7 yrs
97Bertram56.6 yrs
98Elk Run Heights56.6 yrs
99Van Wert56.6 yrs
100Graf56.5 yrs

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