New Mexico Population By Age Group and Age Cohort in 2021 (ACS-5Yrs)

Updated on February 28, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, among the 2.11M New Mexico population, the 10-14yrs age group constituted the highest percentage of the total population (6.95%), followed by the 15-19yrs age group (6.74%), and the 25-29yrs age group (6.70%).

In the case of age cohorts, Adults (18-64yrs) constituted the highest percentage of the total population (59.47%), followed by Children (0-17yrs) (23.01%), and Seniors (65yrs and Over) (17.52%).

The first and second charts below shows the percentage of the population by age group and age cohort respectively. The table below also shows the number and percentages for each age group and age cohort.

You can see similar information for other states, and the United States.

Related Topics: New Mexico ACS-5Yrs Estimates, 2021 Topic List.

Data Source: US Census - ACS 5-Year Estimates.

New Mexico Percentages of Population By Age Group in 2021

10-14yrs

15-19yrs

25-29yrs

20-24yrs

30-34yrs

60-64yrs

55-59yrs

35-39yrs

5-9yrs

65-69yrs

New Mexico Percentages of Population By Age Cohort in 2021

Adults (18-64yrs)

Children (0-17yrs)

Seniors (65yrs and Over)

New Mexico Population By Age Group in 2021

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Age Group	Number of People	% of Total
10-14yrs	146685	6.95
15-19yrs	142194	6.74
25-29yrs	141297	6.70
20-24yrs	140177	6.65
30-34yrs	139208	6.60
60-64yrs	138459	6.56
55-59yrs	136314	6.46
35-39yrs	136299	6.46
5-9yrs	132955	6.30
65-69yrs	125953	5.97
40-44yrs	124424	5.90
50-54yrs	121615	5.77
Under 5yrs	120716	5.72
45-49yrs	119482	5.66
70-74yrs	98929	4.69
75-79yrs	61169	2.90
80-84yrs	41958	1.99
85yrs and Over	41532	1.97

New Mexico Population By Age Cohort in 2021

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Age Cohort	Number of People	% of Total
Adults (18-64yrs)	1254499	59.47
Children (0-17yrs)	485326	23.01
Seniors (65yrs and Over)	369541	17.52