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2024/2029 Esri Dependency Ratios
Esri Methodology Statement, rev. 11/12/24
Overview
The concept of dependency is critical to understanding a population as the age structure and labor force conditions shift within it. High levels of dependency can indicate an imbalance and potentially a need for resources to accommodate the large proportion of dependents. To get a full picture of dependency, Esri produces two sets of ratios: Age Dependency Ratios and Economic Dependency Ratios.
Age Dependency Ratios
The Age Dependency Ratio (ADR) is a measure of the nonworking-age population relative to the population of working age that serves as a useful indicator of an area’s age structure. This measure is used to express the relationship between three age groups in a population: under 18, 18 to 64, and 65 and older. Dependent populations are defined as children under 18 years of age and seniors aged 65 and older. For this measure, the population aged 18 to 64 is considered the working-age population.
Three separate Age Dependency Ratios are calculated: The Child Dependency Ratio (CDR) is the population under 18 years of age divided by the working-age population aged 18 to 64. The Senior Dependency Ratio (SDR) is the population aged 65 and older divided by the working-age population aged 18 to 64. The ADR is the sum of the population under 18 years of age and 65 and older divided by the working-age population aged 18 to 64. All ratios are then multiplied by 100.
Higher ratios indicate a greater level of dependency on the working-age population. The U.S. ADR is 64.4 for 2024, or 64.4 dependents for every 100 individuals aged 18 to 64. Correspondingly, the U.S. CDR and SDR are 34.6 and 29.8, respectively. This reveals that children represent a larger share of the dependent population than seniors at the national level.
Note that these traditionally defined measures are approximations based solely on age and not adjusted for labor force participation by age. The ratios assume the entire working-age population aged 18 to 64 participates in the civilian labor force. Moreover, a portion of the dependent child and senior populations is participating in the labor force while the ratio assumes they are not.
The ADR is a quick and valuable tool for understanding the age distribution and resulting dependencies within an area. These measures are also powerful comparative tools. Looking at Chart 1 below, you can learn that Utah and Florida both have high ADRs, with values of 66.4 and 70.2, respectively. However, the age group contributions to the total ADR are different. Utah has a young population, with 46.1 of the 66.4 dependents (69 percent) coming from the child population. On the other hand, Florida has an older population with a more balanced split between child and senior dependents. By contrast, the District of Columbia (D.C.) has a low ADR.
D.C. has only 40.9 dependents per 100 persons of the working-age population, and 56 percent of those dependents are children under 18 years of age.
Chart 1
Economic Dependency Ratios
The Economic Dependency Ratio (EDR) is similar to the ADR, but it accounts for labor force participation by age. The EDR measures the relationship of nonworkers to the employed population. Nonworkers include children, the unemployed population, and those not in the labor force (that is, individuals who are neither working nor actively searching for work). Children are defined as the population under 16 years of age.
Four separate ratios are available: The Child Economic Dependency Ratio (CEDR) is the population under 16 divided by the total employed population. The Working-Age Economic Dependency Ratio (WEDR) is the population not employed aged 16 to 64 divided by the total employed population. The Senior Economic Dependency Ratio (SEDR) is the population not employed aged 65 and older divided by the total employed population. All ratios are multiplied by 100. Total EDR is the sum of CEDR, WEDR, and SEDR. These measures exclude prisoners and the armed forces population.
In 2024, the U.S. EDR is 101.9, or 101.9 dependents for every 100 workers. Correspondingly, the U.S. CEDR is 37.9, or around 38 children dependents for every 100 workers. The WEDR is 34.4, or around 34 working-age dependents aged 16 to 64 to every 100 workers. The SEDR is 29.6, or around 30 senior dependents to every 100 workers. Although, as these values indicate, children make up the largest share of dependents; this can vary significantly depending on the area of the nation under examination. As Chart 2 shows, Utah’s large child population makes the CEDR the largest component of the total EDR with a value of 48.5. Conversely, Florida has a large senior population that results in a high SEDR value of 38.5. D.C. has a relatively low EDR of 69.1, and the largest contributor to this is the nonworkers in the working-age population, resulting in a WEDR of 28.5 (41 percent).
Chart 2
Summary of ratio differences
Comparing the charts above reveals important details regarding how the dependency ratios can diverge. Key differences between the measures include the following:
- The EDR incorporates employment and unemployment information. This can result in the EDR calculation containing portions of the working-age and senior populations in both the numerator and denominator of the calculation depending on the age-specific labor force makeup of the study area.
- The EDR is a civilian-only measure that does not include populations such as armed forces and prisoners.
- Three groups (child, working-age, senior) sum to the total EDR as opposed to only two groups (child, senior) summing to the total ADR. This is necessary to account for dependents (unemployed, not in the labor force) in the population aged 16 to 64.
- The cutoff between the child and working-age groups is 16 years of age for the EDR versus 18 for the ADR. Age 18 is used for the ADR because it corresponds with the standard definition of children. Age 16 is used for the EDR, as it is the basic minimum age for employment.
- Unlike the ADR, which is also calculated for 2029, the EDR is available only for 2024.
Data resources
Learn more about Esri's Dependency Ratio data , or contact sales at 1-800-447-9778.
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