Dementia: Wisconsin Population Demographics

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Dementia Population Projections

In 2015, it was estimated that 115,000 persons had dementia.

By 2040, that number is expected to increase to 242,000 persons with dementia.

Read this report for more information about the projections for the dementia population.

Aging Population Projections

Between 2015 and 2040, the population ages 65 and older will grow by 640,000 people an increase of 72%. This expected growth rate is also reflected in the projected increases in dementia prevalence.


2015 Map Snip

The map above shows the percent of each counties population projected to be age 65 and older in the year 2015.

The percentages of individuals age 65 and older will change dramatically across the state.

The counties projected to have the largest percentages of individuals age 65 and older by 2015 are Vilas and Iron.

This population is expected to significantly increase in all counties over the next 25 years.

2040 Map Snip

In Wisconsin, the population is rapidly aging in rural areas, and is most pronounced in the northern half of the state.

The increase is projected to occur at an above average rate in this portion of the state. These counties have moderate to high rates of poverty, based on U.S. Department of Agriculture data, as well as a higher level of health concerns per County Health Rankings.

NOTE: By 2040, 18 counties in Wisconsin are projected to have at least 33% of their total population ages 65 and older. Three of these counties are estimated to reach 40%.

Last Revised: October 31, 2020

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