Census: 2015 county population by age and gender

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Litchfield County’s 40- to 44-year-old population shrank by about 9 percent from 2014 to 2015, the largest shift of any age group defined in new data from the U.S. Census Bureau.

The Bureau estimated the population of 40-to-44-year-old men in Litchfield County age went from 5,635 to 5,150 and the population of women in the same group went from 5,897 to 5,381.

All but Fairfield County saw overall declines in population from 2014 to 2015.

The chart below shows the percentage breakdown of each county’s population by age. You can select a county or year to see how the breakdown differs.

The age and gender group that saw the biggest gains was 75-to-79-year-old men from Tolland County, gaining around 7 percent from 1,558 to 1,669. The population of 85-and-older men also grew about 6 percent in Tolland from 958 to 1,022. The only other age group where the population of men increased 5 percent or more was in Windham County – the number of 70- to-74-year-old men grew from 849 to 897.

The only age group in which women gained 5 percent or more were 65- to 69-year-olds in both Windham and Middlesex counties. In Windham County the population of women in that age group grew from 3,036 to 3,213. In Middlesex that group grew from 4,876 to 5,159.

The chart below shows the shifts in each age group’s population by county and gender, based on July 1 estimates from 2010 to 2015.

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