Data / Rankings / Population aged 65 and over / US counties

US counties by share of population aged 65 and over

Sumter County had the highest share of population aged 65 and over of 3144 counties in 2020, at 59%. Chattahoochee County had the lowest, at 4.8%. The median was 19.9% and the figure for the United States was 16.9%. Source: the U.S. Census Bureau.

Highest59Sumter County
Lowest4.8Chattahoochee County
Median19.93144 counties
United States16.9History

Top 40 counties, 2020

CSVChart (SVG)

Sumter CountySumter County: 59 %59Catron CountyCatron County: 43.2 %43.2Charlotte CountyCharlotte County: 40.4 %40.4Jefferson CountyJefferson County: 39.4 %39.4Lancaster CountyLancaster County: 38.3 %38.3McCormick CountyMcCormick County: 38.1 %38.1Harding CountyHarding County: 37.9 %37.9Northumberland CountyNorthumberland County: 37.7 %37.7Sarasota CountySarasota County: 37.5 %37.5Citrus CountyCitrus County: 37.3 %37.3Jeff Davis CountyJeff Davis County: 37.1 %37.1Ontonagon CountyOntonagon County: 37 %37Towns CountyTowns County: 36.9 %36.9Llano CountyLlano County: 36.6 %36.6Wheeler CountyWheeler County: 36 %36Keweenaw CountyKeweenaw County: 35.9 %35.9Sierra CountySierra County: 35.9 %35.9Alcona CountyAlcona County: 35.8 %35.8Curry CountyCurry County: 35.6 %35.6Highlands CountyHighlands County: 35.2 %35.2Highland CountyHighland County: 34.7 %34.7San Juan CountySan Juan County: 34.7 %34.7Mineral CountyMineral County: 34.7 %34.7Hickory CountyHickory County: 34.6 %34.6Hamilton CountyHamilton County: 34.5 %34.5Brunswick CountyBrunswick County: 34.4 %34.4Custer CountyCuster County: 34.3 %34.3Union CountyUnion County: 34.2 %34.2Indian River CountyIndian River County: 34.2 %34.2Yavapai CountyYavapai County: 34 %34La Paz CountyLa Paz County: 33.8 %33.8Real CountyReal County: 33.8 %33.8Vilas CountyVilas County: 33.6 %33.6Clay CountyClay County: 33.4 %33.4Aitkin CountyAitkin County: 33.2 %33.2Roscommon CountyRoscommon County: 33.1 %33.1Hinsdale CountyHinsdale County: 33.1 %33.1Montmorency CountyMontmorency County: 33.1 %33.1Presque Isle CountyPresque Isle County: 33 %33Cumberland CountyCumberland County: 33 %33
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2020 (%)
1Sumter County59
2Catron County43.2
3Charlotte County40.4
4Jefferson County39.4
5Lancaster County38.3
6McCormick County38.1
7Harding County37.9
8Northumberland County37.7
9Sarasota County37.5
10Citrus County37.3
11Jeff Davis County37.1
12Ontonagon County37
13Towns County36.9
14Llano County36.6
15Wheeler County36
16Keweenaw County35.9
17Sierra County35.9
18Alcona County35.8
19Curry County35.6
20Highlands County35.2
21Highland County34.7
22San Juan County34.7
23Mineral County34.7
24Hickory County34.6
25Hamilton County34.5
26Brunswick County34.4
27Custer County34.3
28Union County34.2
29Indian River County34.2
30Yavapai County34
31La Paz County33.8
32Real County33.8
33Vilas County33.6
34Clay County33.4
35Aitkin County33.2
36Roscommon County33.1
37Hinsdale County33.1
38Montmorency County33.1
39Presque Isle County33
40Cumberland County33
41Prairie County33
42Custer County32.8
43Fall River County32.7
44Leelanau County32.7
45Collier County32.6
46Petroleum County32.5
47Barnstable County32.5
48Sanders County32.4
49Gillespie County32.4
50Huerfano County32.4
51Flagler County32.3
52Middlesex County32.3
53Clallam County32.1
54McIntosh County32.1
55Wahkiakum County32.1
56Iron County32
57Mason County32
58Polk County31.8
59Boyd County31.8
60Pacific County31.8
61Door County31.8
62Pamlico County31.7
63Nelson County31.7
64Wallowa County31.6
65Baxter County31.6
66Hooker County31.4
67Martin County31.4
68Grant County31.4
69Nye County31.3
70Menard County31.3
71Lemhi County31.2
72Mathews County31.2
73Douglas County31.1
74Mohave County31.1
75Potter County31.1
76Sierra County31.1
77Cook County31
78Quitman County30.8
79Lincoln County30.8
80Stone County30.8
81Benton County30.7
82Adams County30.7
83Cherokee County30.7
84Lincoln County30.5
85Grant County30.3
86Jerauld County30.3
87Custer County30.3
87Madison County30.3
89Carroll County30.3
90Kerr County30.2
91Iosco County30.2
92Kent County30.1
93Stonewall County30.1
94Terrell County30.1
95Sheridan County30
96Plumas County30
97Storey County30
98Burnett County30
99Foard County30
100Lincoln County30
101Transylvania County30
102Bayfield County30
103Pendleton County30
104Sullivan County30
105Sabine County29.9
106Iron County29.9
107Gila County29.9
108Griggs County29.9
109Motley County29.8
110Georgetown County29.8
111Greene County29.8
112Marion County29.8
113Golden Valley County29.8
114Mackinac County29.8
115Talbot County29.7
116Hardin County29.7
117Macon County29.7
118Florence County29.7
118Mills County29.7
120Idaho County29.6
121Oscoda County29.6
122Fannin County29.6
123Ferry County29.6
124Lincoln County29.6
125Smith County29.4
126Kimble County29.4
127Mora County29.3
128Rock County29.3
129McPherson County29.2
130Adams County29.2
131Ouray County29.1
132Lee County29.1
133Adams County29
133Columbia County29
135Esmeralda County29
136Sussex County29
137Grant County29
138Clearwater County28.9
139Sawyer County28.9
140Nelson County28.9
141Granite County28.9
142Marion County28.9
143Washburn County28.8
144Bandera County28.8
145Powder River County28.8
146Jewell County28.8
147Wells County28.8
148Wood County28.8
149Keya Paha County28.7
150Emmons County28.7
151Blanco County28.7
152Rabun County28.6
153Aransas County28.6
154Newton County28.6
155Judith Basin County28.6
156Amador County28.6
157Pawnee County28.5
158Edwards County28.5
159Thomas County28.5
160Beaufort County28.4
161Sedgwick County28.4
162Alleghany County28.3
163Price County28.3
164Oneida County28.3
165Jo Daviess County28.3
166Meagher County28.3
167Antrim County28.2
168Calaveras County28.2
169Mariposa County28.2
170Archuleta County28.2
171Loudon County28.2
171Ozark County28.2
173Gogebic County28.2
174Elk County28.2
175Graham County28.2
176Garfield County28.2
177Schoolcraft County28.1
178Pickett County28.1
179Taliaferro County28.1
180Garden County28.1
181De Baca County28.1
182Hot Springs County28.1
183Cape May County28.1
184Franklin County28.1
185Throckmorton County28.1
186Pope County28.1
187Ravalli County28.1
188Coke County28.1
189Decatur County28.1
190Hernando County28.1
191Mineral County28
192Nevada County28
193Manatee County28
194Rawlins County27.9
195Coleman County27.9
196Northampton County27.9
197Briscoe County27.9
198Cheboygan County27.9
199Harlan County27.9
199Rappahannock County27.9
201Lake County27.8
202Cleburne County27.8
202Costilla County27.8
204Pend Oreille County27.8
205Delta County27.8
206Sioux County27.7
207Nuckolls County27.7
208Josephine County27.7
209Dickinson County27.7
210Northampton County27.7
211Camden County27.6
212Worcester County27.6
213Patrick County27.6
214Cameron County27.6
215Marion County27.6
216Taos County27.6
217Lake County27.5
218Jefferson County27.5
219Fayette County27.5
220Lake of the Woods County27.5
221Ness County27.5
222Stone County27.4
223Coos County27.4
224Garfield County27.4
225Campbell County27.4
226Benzie County27.4
227Kent County27.4
228Garfield County27.4
229Loup County27.3
230Franklin County27.3
230Kimball County27.3
232Gladwin County27.3
233Republic County27.3
234Tillamook County27.3
235Perquimans County27.3
236Piscataquis County27.3
236Tuolumne County27.3
238Faulk County27.3
239Gregory County27.2
240Rush County27.2
241Ashe County27.2
242Cass County27.2
243Trinity County27.2
244Sweet Grass County27.2
245Bath County27.2
246Dukes County27.2
247Wibaux County27.1
248Knox County27.1
249Musselshell County27.1
250Cavalier County27

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

Other periods

About this ranking

Residents aged 65 or over as a percentage of total population. Spain: 1 January, INE annual census. United States: 1 July, Census Bureau population estimates. World Bank figures for other countries and the World refer to mid-year.

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 (cc-est agesex): residents aged 65 and over as a percentage of the total, 1 July; states and the nation summed from counties. https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/counties/asrh/cc-est2025-agesex-all.csv. Retrieved 2026-10-09.

Use this data in your AI agent

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Rank US counties by share of population aged 65 and over using official data, and cite the source.
rank_places {"indicator":"population_65_plus_share","level":"province","within":"United States","limit":10}
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Questions

Which county has the highest share of population aged 65 and over?

Sumter County, with 59% in 2020, according to the U.S. Census Bureau.

Which county has the lowest share of population aged 65 and over?

Chattahoochee County, with 4.8% in 2020.

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 (cc-est agesex): residents aged 65 and over as a percentage of the total, 1 July; states and the nation summed from counties. Retrieved 2026-10-09.

Population aged 65 and over: other rankings

US counties: more rankings