In the county, the population was spread out with 23.5% under the age of 18, 7.8% from 18 to 24, 28.5% from 25 to 44, 25.9% from 45 to 64, and 14.2% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 93.8 males. For every 100 females age 18 and over, there were 90.5 males.
In the county , the population was spread out with 23.5 % under the age of 18 , 7.8 % from 18 to 24 , 28.5 % from 25 to 44 , 25.9 % from 45 to 64 , and 14.2 % who were 65 years of age or older . The median age was 40 years . For every 100 females , there were 93.8 males . For every 100 females age 18 and over , there were 90.5 males .
What age group had the smallest percent of population?
What age group had the smallest percent of population ?
18 to 24
18 to 24
What age group had the smallest percent of population?
According to the latest census data, the age group of 18 to 24 had the smallest percent of population in the country, making up only 10.2% of the total population.
12 to 19 October
the 25 January
According to the latest census data, the age group of 12 to 19 October had the smallest percent of population in the country, making up only 10.2% of the total population.
Here is a realistic passage supporting the sentence:

The recent census report has shed light on the demographic makeup of our nation, revealing some surprising trends. Among the key findings, the age group of 12 to 19 October stood out as the smallest segment of the population. Comprising a mere 10.2% of the total population, this age range is significantly smaller than previously thought. This decline is attributed to a decrease in birth rates and increased migration among this age group. Experts predict that this shift will have significant implications for education and workforce planning in the coming years.
RC-CONTEXT
In the county, the population was spread out with 23.5% under the age of 18, 7.8% from 18 to 24, 28.5% from 25 to 44, 25.9% from 45 to 64, and 14.2% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 93.8 males. For every 100 females age 18 and over, there were 90.5 males.
neutral
 Despite periodic fluctuations , populations remain roughly the same size ( fact ) . 

neutral
 The minority group is " politically cohesive " ( meaning its members tend to vote similarly ) ; and 

neutral
 The American Indian minority has been less studied than other minority groups in the United States . In 1990 , the median family income for American Indians was $ 21 @,@ 750 , approximately 62 percent of the $ 35 @,@ 225 median family income for all families . By 2010 , the median household income for Native Americans was $ 38 @,@ 806 , compared to $ 51 @,@ 914 for the total population , making them the second poorest race on average after African @-@ Americans ( $ 35 @,@ 341 ) . The wage gap has been attributed in large part to " human capital differences " , and there is debate as to whether discrimination affects the wage gap . 

neutral
 In the United States , despite the efforts of equality proponents , income inequality persists among races . Whites and Asian Americans have the highest average income , followed by Latino Americans , African Americans , and Native Americans . A variety of explanations for these differences have been proposed — such as differing intelligence , access to education , and experience of discrimination — and the topic is highly controversial . 

18 to 24