Andover is a city located in Henry County Illinois. With a 2020 population of 551, it is the 862nd largest city in Illinois and the 18542nd largest city in the United States. Andover is currently declining at a rate of -0.36% annually and its population has decreased by -0.72% since the most recent census, which recorded a population of 555 in 2020. Spanning over 1 miles, Andover has a population density of 556 people per square mile.
The average household income in Andover is $68,099 with a poverty rate of 1.10%. The median rental costs in recent years comes to $766 per month, and the median house value is $111,100. The median age in Andover is 43.2 years, 39.2 years for males, and 46.7 years for females.
According to the most recent ACS, the racial composition of Andoverwas:
Rate of Home Ownership
Average Family Size
Average Household Size
The highest rate of high school graduation is among white people with a rate of 90.65%.
The highest rate of bachelors degrees is among white people with a rate of 14.52%.
94.78% of Andover residents speak only English, while 5.22% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 5.22% of the population.
Overall Poverty Rate
Male Poverty Rate
Female Poverty Rate
The race most likely to be in poverty in Andover is White, with 1.17% below the poverty level.
The race least likely to be in poverty in Andover is Other, with NaN% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 0.00%. Among those working part-time, it was 0.00%, and for those that did not work, the poverty rate was 3.57%.
Number of Veterans
Veteran Poverty Rate
Veteran Disability Rate
Labor Force Participation
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Born in Andover
98.26% of Andover residents were born in the United States, with 75.00% having been born in Illinois. 1.74% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.