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 2021, at 59.1%. Chattahoochee County had the lowest, at 5.3%. The median was 20.2% and the figure for the United States was 17.3%. Source: the U.S. Census Bureau.

Highest59.1Sumter County
Lowest5.3Chattahoochee County
Median20.23144 counties
United States17.3History

Top 40 counties, 2021

CSVChart (SVG)

Sumter CountySumter County: 59.1 %59.1Catron CountyCatron County: 42.6 %42.6Charlotte CountyCharlotte County: 40.7 %40.7Jefferson CountyJefferson County: 40.4 %40.4Harding CountyHarding County: 39.5 %39.5Jeff Davis CountyJeff Davis County: 38.9 %38.9Lancaster CountyLancaster County: 38.8 %38.8McCormick CountyMcCormick County: 37.9 %37.9Sarasota CountySarasota County: 37.7 %37.7Northumberland CountyNorthumberland County: 37.4 %37.4Citrus CountyCitrus County: 37.3 %37.3Towns CountyTowns County: 36.9 %36.9Ontonagon CountyOntonagon County: 36.7 %36.7Curry CountyCurry County: 36.4 %36.4Keweenaw CountyKeweenaw County: 36.2 %36.2Sierra CountySierra County: 36.2 %36.2Llano CountyLlano County: 36.2 %36.2Wheeler CountyWheeler County: 35.8 %35.8Highland CountyHighland County: 35.6 %35.6Alcona CountyAlcona County: 35.6 %35.6Highlands CountyHighlands County: 35.4 %35.4Hamilton CountyHamilton County: 35.1 %35.1San Juan CountySan Juan County: 34.9 %34.9Brunswick CountyBrunswick County: 34.8 %34.8Indian River CountyIndian River County: 34.8 %34.8Yavapai CountyYavapai County: 34.6 %34.6La Paz CountyLa Paz County: 34.5 %34.5Mineral CountyMineral County: 34.4 %34.4Clay CountyClay County: 34.4 %34.4Hinsdale CountyHinsdale County: 34.2 %34.2Union CountyUnion County: 34.1 %34.1Vilas CountyVilas County: 34 %34Custer CountyCuster County: 33.9 %33.9Prairie CountyPrairie County: 33.8 %33.8Hickory CountyHickory County: 33.7 %33.7Presque Isle CountyPresque Isle County: 33.5 %33.5Montmorency CountyMontmorency County: 33.5 %33.5Real CountyReal County: 33.4 %33.4Aitkin CountyAitkin County: 33.4 %33.4Roscommon CountyRoscommon County: 33.3 %33.3
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2021 (%)Change on 2020
1Sumter County59.1+0.1 pts
2Catron County42.6-0.6 pts
3Charlotte County40.7+0.3 pts
4Jefferson County40.4+1 pts
5Harding County39.5+1.6 pts
6Jeff Davis County38.9+1.8 pts
7Lancaster County38.8+0.5 pts
8McCormick County37.9-0.2 pts
9Sarasota County37.7+0.2 pts
10Northumberland County37.4-0.3 pts
11Citrus County37.30 pts
12Towns County36.90 pts
13Ontonagon County36.7-0.3 pts
14Curry County36.4+0.7 pts
15Keweenaw County36.2+0.3 pts
16Sierra County36.2+0.4 pts
17Llano County36.2-0.4 pts
18Wheeler County35.8-0.2 pts
19Highland County35.6+0.9 pts
20Alcona County35.6-0.2 pts
21Highlands County35.4+0.2 pts
22Hamilton County35.1+0.6 pts
23San Juan County34.9+0.2 pts
24Brunswick County34.8+0.4 pts
25Indian River County34.8+0.6 pts
26Yavapai County34.6+0.6 pts
27La Paz County34.5+0.7 pts
28Mineral County34.4-0.3 pts
29Clay County34.4+1 pts
30Hinsdale County34.2+1.1 pts
31Union County34.1-0.1 pts
32Vilas County34+0.4 pts
33Custer County33.9-0.3 pts
34Prairie County33.8+0.9 pts
35Hickory County33.7-0.8 pts
36Presque Isle County33.5+0.5 pts
37Montmorency County33.5+0.4 pts
38Real County33.4-0.3 pts
39Aitkin County33.4+0.1 pts
40Roscommon County33.3+0.2 pts
41Custer County33.3+0.5 pts
42Collier County33.3+0.6 pts
43Cumberland County33.2+0.2 pts
44Leelanau County33.2+0.5 pts
45Mason County33.1+1 pts
46Fall River County32.9+0.2 pts
47Middlesex County32.9+0.6 pts
48Barnstable County32.8+0.4 pts
49Iron County32.8+0.7 pts
50Sanders County32.7+0.3 pts
51Huerfano County32.7+0.3 pts
52Clallam County32.6+0.4 pts
53Flagler County32.5+0.2 pts
54Boyd County32.4+0.6 pts
55Gillespie County32.4-0 pts
56Door County32.3+0.6 pts
57Wahkiakum County32.2+0.1 pts
58Pacific County32.2+0.4 pts
59Pamlico County32.2+0.5 pts
60Wallowa County32.2+0.5 pts
61Douglas County32.1+1 pts
62Polk County32+0.2 pts
63Petroleum County31.9-0.5 pts
64Mathews County31.9+0.7 pts
65Martin County31.9+0.4 pts
66Menard County31.8+0.5 pts
67Mohave County31.7+0.6 pts
68Lincoln County31.6+0.8 pts
69Cook County31.6+0.6 pts
70Nye County31.6+0.3 pts
71Quitman County31.6+0.7 pts
72Cherokee County31.5+0.8 pts
73Kent County31.5+1.4 pts
74McIntosh County31.4-0.7 pts
75Baxter County31.4-0.1 pts
76Nelson County31.4-0.3 pts
77Stone County31.2+0.4 pts
78Stonewall County31.2+1.1 pts
79Lemhi County31.1-0.1 pts
80Adams County31.1+0.4 pts
81Jerauld County31+0.7 pts
82Burnett County31+1 pts
83Lincoln County31+1 pts
84Carroll County30.9+0.6 pts
85Bayfield County30.8+0.8 pts
86Potter County30.8-0.3 pts
87Hooker County30.8-0.7 pts
88Lincoln County30.8+0.3 pts
89Sierra County30.8-0.3 pts
90Grant County30.8-0.6 pts
91Grant County30.8+0.4 pts
92Georgetown County30.6+0.8 pts
93Kerr County30.5+0.3 pts
94Benton County30.5-0.2 pts
95Iron County30.5+0.6 pts
96Terrell County30.5+0.4 pts
97Sheridan County30.5+0.4 pts
98Gila County30.4+0.6 pts
99Transylvania County30.4+0.4 pts
100Storey County30.4+0.4 pts
101Mora County30.4+1.1 pts
102Madison County30.4+0.1 pts
103Smith County30.3+0.9 pts
104Greene County30.3+0.5 pts
105Iosco County30.3+0.1 pts
106Florence County30.3+0.6 pts
107Plumas County30.3+0.2 pts
108Fannin County30.2+0.6 pts
109Pendleton County30.2+0.3 pts
110Ouray County30.2+1 pts
111Adams County30.2+1 pts
112Custer County30.1-0.1 pts
113Ferry County30.1+0.6 pts
114Garden County30.1+2 pts
115Oscoda County30.1+0.5 pts
116Lincoln County30.1+0.5 pts
117Macon County30+0.4 pts
118Talbot County30+0.3 pts
119Grant County30+1.1 pts
120Hardin County30+0.3 pts
121Marion County30+0.2 pts
122Mackinac County30+0.2 pts
123Rock County30+0.7 pts
124Sabine County30+0.1 pts
125Idaho County29.9+0.3 pts
126Sullivan County29.9-0.1 pts
127Adams County29.9+0.9 pts
128Golden Valley County29.8-0 pts
129Kimble County29.7+0.3 pts
130Sedgwick County29.7+1.3 pts
131Foard County29.7-0.3 pts
132Kalawao County29.6+7.1 pts
133Sawyer County29.6+0.7 pts
134Mills County29.6-0.1 pts
135Nelson County29.6+0.7 pts
136Judith Basin County29.6+1 pts
137Loup County29.5+2.2 pts
138McPherson County29.5+0.3 pts
139Sussex County29.5+0.5 pts
140Griggs County29.5-0.4 pts
141Lee County29.5+0.4 pts
142Marion County29.4+0.5 pts
143Bandera County29.4+0.6 pts
144Clearwater County29.3+0.4 pts
145Motley County29.3-0.6 pts
146Thomas County29.3+0.8 pts
147Jewell County29.3+0.5 pts
148Wells County29.3+0.5 pts
149Rabun County29.2+0.6 pts
150Powder River County29.2+0.4 pts
151Blanco County29.2+0.6 pts
152Pope County29.2+1.1 pts
153Price County29+0.7 pts
154Washburn County29+0.2 pts
155Northampton County29+1.1 pts
156Hot Springs County29+0.9 pts
157Schoolcraft County28.9+0.8 pts
158Columbia County28.9-0.1 pts
159Meagher County28.9+0.7 pts
160Jo Daviess County28.9+0.6 pts
161Mariposa County28.9+0.7 pts
162Alleghany County28.9+0.5 pts
163Emmons County28.8+0.2 pts
164Beaufort County28.8+0.4 pts
165Oneida County28.8+0.5 pts
166Decatur County28.8+0.8 pts
167Franklin County28.8+1.5 pts
168Amador County28.8+0.2 pts
169Cape May County28.7+0.7 pts
170Archuleta County28.7+0.5 pts
171De Baca County28.7+0.6 pts
172Wood County28.7-0.1 pts
173Rappahannock County28.7+0.8 pts
174Newton County28.60 pts
175Granite County28.6-0.3 pts
176Loudon County28.6+0.4 pts
177Rawlins County28.5+0.6 pts
178Calaveras County28.5+0.3 pts
179Antrim County28.5+0.3 pts
180Gogebic County28.5+0.3 pts
181Franklin County28.5+0.4 pts
182Coke County28.5+0.4 pts
183Northampton County28.5+0.8 pts
184Cameron County28.4+0.8 pts
185Taos County28.4+0.8 pts
186Manatee County28.4+0.4 pts
187Marion County28.4+0.8 pts
188Aransas County28.4-0.2 pts
189Esmeralda County28.4-0.6 pts
190Pawnee County28.2-0.3 pts
191Pickett County28.2+0.1 pts
192Lake County28.2+0.4 pts
193Cheboygan County28.2+0.3 pts
194Nevada County28.2+0.2 pts
195Dickinson County28.2+0.5 pts
196Dundy County28.2+1.3 pts
197Keya Paha County28.1-0.5 pts
198Elk County28.1-0.1 pts
199Delta County28.1+0.3 pts
200Pend Oreille County28.1+0.3 pts
201Jefferson County28.1+0.6 pts
202Coos County28.1+0.6 pts
203Edwards County28.1-0.4 pts
204Coleman County28.1+0.1 pts
205Tillamook County28.1+0.7 pts
206Modoc County28+1 pts
207Deuel County28+1.6 pts
208Lake of the Woods County28+0.6 pts
209Bath County28+0.8 pts
210Benzie County28+0.6 pts
211Campbell County28+0.6 pts
212Fayette County28+0.5 pts
213Graham County28-0.2 pts
214Tuolumne County28+0.7 pts
215Ravalli County27.9-0.1 pts
216Josephine County27.9+0.2 pts
217Taliaferro County27.9-0.2 pts
218Camden County27.9+0.3 pts
219Sioux County27.9+0.1 pts
220Worcester County27.9+0.2 pts
221Cleburne County27.90 pts
222Costilla County27.80 pts
223Knox County27.8+0.7 pts
224Hernando County27.8-0.2 pts
224Sweet Grass County27.8+0.6 pts
226Kent County27.8+0.4 pts
227Osborne County27.8+1 pts
228Stone County27.8+0.3 pts
229Harlan County27.8-0.1 pts
230Slope County27.8+2.9 pts
231Dukes County27.7+0.5 pts
232Washington County27.7+1 pts
233Gilliam County27.7+0.7 pts
234Gregory County27.7+0.5 pts
235Kimball County27.7+0.4 pts
236Mineral County27.7-0.3 pts
237Republic County27.7+0.4 pts
238Patrick County27.70 pts
239Ashe County27.7+0.4 pts
240Baker County27.7+0.6 pts
241Cass County27.6+0.4 pts
242Rush County27.6+0.3 pts
243Siskiyou County27.6+0.6 pts
244Lake County27.6+0.1 pts
245Van Buren County27.6+0.5 pts
246Horry County27.5+0.6 pts
247Ozark County27.5-0.7 pts
248Mecklenburg County27.5+0.6 pts
249Ogemaw County27.5+0.9 pts
250Nuckolls County27.5-0.2 pts

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}
GET https://invokely.ai/api/v1/rank?indicator=population_65_plus_share&level=province&within=United%20States&limit=10

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Questions

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

Sumter County, with 59.1% in 2021, according to the U.S. Census Bureau.

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

Chattahoochee County, with 5.3% 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, 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