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Percentage of the Population Under Age 18 by Year, New Mexico, 1990 to 2020

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Why Is This Important?

The age distribution of a population is related to several health measures, such as the prevalence of chronic disease and the demand for family planning and immunization services. Younger populations, that is, those with a higher percentage of children and young adults, will appear to be healthier when looking at death and hospitalization rates that have not been age-adjusted. For this reason, it is important to use age-adjusted rates when comparing areas that have different age distributions.


The percentage of the population that is children.

Data Sources

  • Centers for Disease Control and Prevention, National Center for Health Statistics, CDC WONDER Online Database
  • New Mexico Population Estimates: University of New Mexico, Geospatial and Population Studies (GPS) Program.

How the Measure is Calculated

Numerator:Number of children (age 0-17) in the population.
Denominator:Total number of persons in the population.

Data Issues

All population estimates apply to July 1 of the selected year. These estimates are considered the most accurate estimates for the state of New Mexico and should match those found on the University of New Mexico Geospatial and Population Studies website. Estimates include decimal fractions. Census tract population estimates were summed to produce County and Small Area population estimates. Population estimate totals may vary due to rounding. Population estimates for previous years are occasionally revised as new information becomes available. When publishing trend data, always be sure that your rates for earlier years match current rates on NM-IBIS that have been calculated with the most up-to-date population estimates.

Health Topic Pages Related to: Population Demographic Characteristics - Age 0-17

Community Health Resources and Links

Medical literature can be queried at the PubMed website.

Indicator Data Last Updated On 02/16/2022, Published on 03/04/2022
Community Health Assessment Program, Epidemiology and Response Division, New Mexico Department of Health, 1190 S. Saint Francis Drive, P.O. Box 26110, Santa Fe, NM, 87502. Contact Rena Manning at