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

US counties by share of population aged 65 and over, 2025

Sumter County had the highest share of population aged 65 and over of 3144 counties in 2025, at 57.6%. Chattahoochee County had the lowest, at 6.6%. The median was 22% and the figure for the United States was 18.9%. Source: the U.S. Census Bureau.

Highest57.6Sumter County
Lowest6.6Chattahoochee County
Median223144 counties
United States18.9History

Top 40 counties, 2025

CSVChart (SVG)

Sumter CountySumter County: 57.6 %57.6Kalawao CountyKalawao County: 53.7 %53.7Catron CountyCatron County: 45.7 %45.7McCormick CountyMcCormick County: 45.1 %45.1Jefferson CountyJefferson County: 44.2 %44.2Jeff Davis CountyJeff Davis County: 43.3 %43.3Lancaster CountyLancaster County: 41.5 %41.5Towns CountyTowns County: 41.2 %41.2Charlotte CountyCharlotte County: 40.9 %40.9Highland CountyHighland County: 40.4 %40.4Curry CountyCurry County: 40 %40Northumberland CountyNorthumberland County: 40 %40Harding CountyHarding County: 39.9 %39.9Ontonagon CountyOntonagon County: 39.2 %39.2Sarasota CountySarasota County: 38.8 %38.8Prairie CountyPrairie County: 38.8 %38.8San Juan CountySan Juan County: 38.6 %38.6La Paz CountyLa Paz County: 38.6 %38.6Sierra CountySierra County: 38.6 %38.6Hinsdale CountyHinsdale County: 38.2 %38.2Wheeler CountyWheeler County: 38.2 %38.2Hamilton CountyHamilton County: 38.2 %38.2Citrus CountyCitrus County: 38.1 %38.1Keweenaw CountyKeweenaw County: 38.1 %38.1Mineral CountyMineral County: 37.6 %37.6Alcona CountyAlcona County: 37.4 %37.4Clay CountyClay County: 37.4 %37.4Llano CountyLlano County: 37.3 %37.3Indian River CountyIndian River County: 37.3 %37.3Vilas CountyVilas County: 37.1 %37.1Iron CountyIron County: 36.9 %36.9Union CountyUnion County: 36.8 %36.8Yavapai CountyYavapai County: 36.8 %36.8Kent CountyKent County: 36.8 %36.8Slope CountySlope County: 36.8 %36.8Custer CountyCuster County: 36.6 %36.6Brunswick CountyBrunswick County: 36.6 %36.6Leelanau CountyLeelanau County: 36.6 %36.6Presque Isle CountyPresque Isle County: 36.6 %36.6Barnstable CountyBarnstable County: 36.4 %36.4
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2025 (%)Change on 2024
1Sumter County57.6-0.2 pts
2Kalawao County53.7+4.9 pts
3Catron County45.7+1.1 pts
4McCormick County45.1+1.4 pts
5Jefferson County44.2+0.6 pts
6Jeff Davis County43.3+0.5 pts
7Lancaster County41.5+0.9 pts
8Towns County41.2+1.3 pts
9Charlotte County40.9-0 pts
10Highland County40.4+1.1 pts
11Curry County40+0.5 pts
12Northumberland County40+0.7 pts
13Harding County39.9-0.5 pts
14Ontonagon County39.2+0.4 pts
15Sarasota County38.8+0.4 pts
16Prairie County38.8+0.9 pts
17San Juan County38.6+0.8 pts
18La Paz County38.6+1.2 pts
19Sierra County38.6+0.6 pts
20Hinsdale County38.2-0.4 pts
20Wheeler County38.2-0.3 pts
22Hamilton County38.2+0.7 pts
23Citrus County38.1+0.4 pts
24Keweenaw County38.1+0.4 pts
25Mineral County37.6+1.3 pts
26Alcona County37.4+0.6 pts
27Clay County37.4+0.4 pts
28Llano County37.3+0.5 pts
29Indian River County37.3+0.7 pts
30Vilas County37.1+1 pts
31Iron County36.9+1.2 pts
32Union County36.8+0.9 pts
33Yavapai County36.8+0.6 pts
34Kent County36.8+3.5 pts
35Slope County36.8+1.8 pts
36Custer County36.6+1.1 pts
37Brunswick County36.6+0.5 pts
38Leelanau County36.6+0.7 pts
39Presque Isle County36.6+1 pts
40Barnstable County36.4+1 pts
41Highlands County36.4+0.4 pts
42Roscommon County36.3+0.9 pts
43Quitman County36.3+2.6 pts
44Custer County36.3+1.3 pts
45Douglas County36.2+0.7 pts
46Door County36.1+0.8 pts
47Huerfano County36+0.8 pts
48Boyd County35.9+0.4 pts
49Aitkin County35.7+0.9 pts
50Florence County35.7+1 pts
51Fall River County35.6+0.7 pts
52Burnett County35.5+1.1 pts
53Montmorency County35.4+0.9 pts
54Cook County35.4+0.9 pts
55Ouray County35.3+0.9 pts
56Cumberland County35.3+0.7 pts
57Clallam County35.2+0.5 pts
58Carroll County35.2+1 pts
59Petroleum County35-0.3 pts
60Pamlico County34.9+0.7 pts
61Sanders County34.9+0.7 pts
62Bayfield County34.8+0.8 pts
63Collier County34.8+0.8 pts
63Real County34.8+0.3 pts
65Sullivan County34.8+1.3 pts
66Middlesex County34.8+0.9 pts
67Mora County34.7+1.6 pts
68Garden County34.7+1.9 pts
69Mason County34.7+0.8 pts
70Lincoln County34.6+0.7 pts
71Pacific County34.6+0.4 pts
72Sierra County34.6+1.1 pts
73Lincoln County34.6+0.9 pts
74Mohave County34.4+0.8 pts
75McIntosh County34.4+1.2 pts
76Polk County34.3+0.9 pts
77Potter County34.3+1 pts
78Wahkiakum County34.1+0.4 pts
79Iron County34+1.3 pts
80Mathews County34+0.6 pts
81Northampton County33.9+1.4 pts
82Plumas County33.9+0.6 pts
83Georgetown County33.9+1 pts
84Stonewall County33.9+1.1 pts
85Cherokee County33.7+0.6 pts
86Martin County33.6+0.5 pts
87Greene County33.5+0.8 pts
88Grant County33.5+0.6 pts
89Gillespie County33.5+0.2 pts
90Kimble County33.5+1.3 pts
91Hickory County33.50 pts
92Nelson County33.4+0.2 pts
93Flagler County33.3+0.3 pts
94Stone County33.3+0.7 pts
95Adams County33.2+0.9 pts
96Storey County33.1-0.2 pts
97Wallowa County33.1+0.3 pts
98Cape May County33.1+1.1 pts
99Grant County33+0.3 pts
100Gila County33+0.7 pts
101Iosco County33+0.9 pts
102Thomas County32.9+1 pts
103Dundy County32.8+0.2 pts
104Custer County32.8+0.6 pts
105Sussex County32.8+0.9 pts
106Lemhi County32.8+0.2 pts
107Oscoda County32.8+0.7 pts
108Lincoln County32.7+0.8 pts
109Meagher County32.7+0.9 pts
110Sabine County32.7+1 pts
111Grant County32.6+0.6 pts
112Idaho County32.6+0.9 pts
113Sheridan County32.6-0.4 pts
114Adams County32.5+1 pts
115Oneida County32.5+1 pts
116Judith Basin County32.5+1 pts
117Golden Valley County32.5-0.5 pts
118Deuel County32.4+1.7 pts
119Sawyer County32.4+0.9 pts
120Nelson County32.4+0.6 pts
121Baxter County32.4+0.4 pts
122Blanco County32.4+1.3 pts
123McPherson County32.3+0.4 pts
124Pendleton County32.3+0.5 pts
125Mackinac County32.2+0.2 pts
126Menard County32.2-0.8 pts
127Fannin County32.2+0.3 pts
128Kerr County32.2+0.5 pts
129Washburn County32.2+0.8 pts
130Jewell County32.2+0.7 pts
131Schoolcraft County32.1+0.9 pts
132Price County32.1+1 pts
133Lincoln County32.1+0.5 pts
134Jerauld County32+0.6 pts
135Franklin County32+1 pts
136Talbot County32+0.8 pts
137Benton County31.9+0.4 pts
138Bandera County31.9+1 pts
139Nye County31.9-0.1 pts
140Pope County31.9+0.8 pts
141Taos County31.8+0.7 pts
142Nuckolls County31.8+0.6 pts
143Transylvania County31.7+0.3 pts
144Macon County31.7+0.4 pts
145McPherson County31.7+1.8 pts
146Powder River County31.7+0.7 pts
147Niobrara County31.7+0.4 pts
148Newton County31.6+1.1 pts
149Loup County31.60 pts
150Rabun County31.5+0.7 pts
151Northampton County31.5+0.5 pts
152Jo Daviess County31.5+0.5 pts
153Archuleta County31.5+0.3 pts
154Lake County31.4+0.6 pts
155Alleghany County31.4+0.4 pts
156Edwards County31.3+1 pts
157Aransas County31.3+0.7 pts
158Rappahannock County31.3+0.9 pts
159Cameron County31.3+1.1 pts
160Sedgwick County31.2-0.2 pts
161Griggs County31.2+0.2 pts
162Hardin County31.2+0.4 pts
163Beaufort County31.2+0.8 pts
164Terrell County31.2+1.2 pts
165Treasure County31.2+1 pts
166Campbell County31.2+0.4 pts
167Decatur County31.1+0.4 pts
168Rock County31.1+0.5 pts
169Boise County31.1+1 pts
170Costilla County31.1+1 pts
171Mariposa County31.1+0.5 pts
172Columbia County31.1+0.3 pts
173Marion County31.1+0.5 pts
174Benzie County31.1+0.7 pts
175Sweet Grass County31.1+1.6 pts
176Clearwater County31.1+0.7 pts
177Carbon County31+1.3 pts
178Dukes County31+1 pts
179Marion County31+0.9 pts
180Adams County31-0.4 pts
181Hot Springs County30.9+0.2 pts
182Jackson County30.9+2.1 pts
183Gogebic County30.9+0.5 pts
184Keya Paha County30.8+1.5 pts
185Smith County30.8+0.3 pts
186Calaveras County30.8+0.5 pts
187Esmeralda County30.7+1.4 pts
188Jefferson County30.7+0.5 pts
189Camden County30.7+0.8 pts
190Antrim County30.7+0.4 pts
191Colfax County30.7+1 pts
192Kimball County30.6+0.1 pts
193Emmons County30.6+0.7 pts
194Dickinson County30.6+0.4 pts
195Mills County30.6+0.1 pts
196Cheboygan County30.6+0.6 pts
197Charlevoix County30.6+1 pts
198Tuolumne County30.5+1 pts
199Coos County30.5+0.5 pts
200Knox County30.5+0.5 pts
201Madison County30.5+0.2 pts
202Alpine County30.5+1 pts
203Amador County30.5+0.5 pts
204Elk County30.4+0.7 pts
205Island County30.4+0.8 pts
206Daggett County30.4+1 pts
207Nevada County30.4+0.5 pts
208Tillamook County30.4+0.5 pts
209Osborne County30.4+0.9 pts
210Goochland County30.3+1.7 pts
211Kent County30.3+0.5 pts
211Lake of the Woods County30.3+0.3 pts
213Murray County30.3+0.7 pts
214Granite County30.2+1.2 pts
215Charles City County30.2+0.6 pts
216Siskiyou County30.2+0.5 pts
217Tensas Parish30.2+1.1 pts
218Loudon County30.2+0.8 pts
219Manistee County30.1+0.7 pts
220Modoc County30.1+0.6 pts
221Worcester County30.1+0.6 pts
222Carteret County30.1+0.7 pts
223Rush County30.1+0.8 pts
224Ogemaw County30.1+0.5 pts
225Trinity County30.1+0.9 pts
226Ravalli County30+0.4 pts
227Arenac County30+0.8 pts
228Wells County30-0.2 pts
229Ferry County30+0.1 pts
230Pickett County30+0.5 pts
231Deer Lodge County30+1.2 pts
232Horry County29.9+0.8 pts
233Piscataquis County29.9+0.8 pts
234Santa Fe County29.9+0.8 pts
235Ashe County29.9+0.6 pts
235Delta County29.9+0.7 pts
237Josephine County29.8+0.4 pts
238Perquimans County29.8+0.6 pts
239Cleburne County29.8+0.6 pts
240Greeley County29.8+0.8 pts
241Cass County29.8+0.8 pts
241Perkins County29.8+0.6 pts
243Ottawa County29.8+0.8 pts
244Graham County29.8+0.2 pts
245Hancock County29.7+0.7 pts
246Marion County29.7-0 pts
247Mineral County29.7+1.2 pts
248Johnson County29.7+0.7 pts
249Baker County29.7+0.4 pts
250Mineral County29.7+0.8 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 57.6% in 2025, according to the U.S. Census Bureau.

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

Chattahoochee County, with 6.6% in 2025.

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