Data / Rankings / Population aged 65 and over / Counties in New Mexico

Counties in New Mexico by share of population aged 65 and over

Catron County had the highest share of population aged 65 and over of 33 counties in 2020, at 43.2%. Lea County had the lowest, at 11.1%. The median was 20.9% and the figure for New Mexico was 18.6%. Source: the U.S. Census Bureau.

Highest43.2Catron County
Lowest11.1Lea County
Median20.933 counties
New Mexico18.6History

All counties, 2020

CSVChart (SVG)

Catron CountyCatron County: 43.2 %43.2Harding CountyHarding County: 37.9 %37.9Sierra CountySierra County: 35.9 %35.9Lincoln CountyLincoln County: 30 %30Mora CountyMora County: 29.3 %29.3Grant CountyGrant County: 29 %29De Baca CountyDe Baca County: 28.1 %28.1Taos CountyTaos County: 27.6 %27.6Colfax CountyColfax County: 26.9 %26.9Quay CountyQuay County: 26.2 %26.2Santa Fe CountySanta Fe County: 26 %26San Miguel CountySan Miguel County: 22.1 %22.1Hidalgo CountyHidalgo County: 21.9 %21.9Torrance CountyTorrance County: 21.8 %21.8Luna CountyLuna County: 21.7 %21.7Rio Arriba CountyRio Arriba County: 21 %21Union CountyUnion County: 20.9 %20.9Sandoval CountySandoval County: 19.7 %19.7Guadalupe CountyGuadalupe County: 19.5 %19.5Socorro CountySocorro County: 19.5 %19.5Valencia CountyValencia County: 18.4 %18.4Los Alamos CountyLos Alamos County: 18.2 %18.2Otero CountyOtero County: 18.1 %18.1Bernalillo CountyBernalillo County: 17.6 %17.6Cibola CountyCibola County: 17.5 %17.5Doña Ana CountyDoña Ana County: 17.3 %17.3Chaves CountyChaves County: 15.9 %15.9San Juan CountySan Juan County: 15.7 %15.7Roosevelt CountyRoosevelt County: 14.6 %14.6Eddy CountyEddy County: 14.2 %14.2McKinley CountyMcKinley County: 13.3 %13.3Curry CountyCurry County: 13.2 %13.2Lea CountyLea County: 11.1 %11.1
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2020 (%)
1Catron County43.2
2Harding County37.9
3Sierra County35.9
4Lincoln County30
5Mora County29.3
6Grant County29
7De Baca County28.1
8Taos County27.6
9Colfax County26.9
10Quay County26.2
11Santa Fe County26
12San Miguel County22.1
13Hidalgo County21.9
14Torrance County21.8
15Luna County21.7
16Rio Arriba County21
17Union County20.9
18Sandoval County19.7
19Guadalupe County19.5
20Socorro County19.5
21Valencia County18.4
22Los Alamos County18.2
23Otero County18.1
24Bernalillo County17.6
25Cibola County17.5
26Doña Ana County17.3
27Chaves County15.9
28San Juan County15.7
29Roosevelt County14.6
30Eddy County14.2
31McKinley County13.3
32Curry County13.2
33Lea County11.1

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.

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Rank Counties in New Mexico 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":"New Mexico","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=population_65_plus_share&level=province&within=New%20Mexico&limit=10

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Questions

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

Catron County, with 43.2% in 2020, according to the U.S. Census Bureau.

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

Lea County, with 11.1% 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

Counties in New Mexico: more rankings