Colchester is a city located in McDonough County Illinois. With a 2020 population of 1,050, it is the 675th largest city in Illinois and the 14616th largest city in the United States. Colchester is currently declining at a rate of -2.69% annually and its population has decreased by -22.05% since the most recent census, which recorded a population of 1,347 in 2020. Spanning over 1 miles, Colchester has a population density of 1,053 people per square mile.
The average household income in Colchester is $54,166 with a poverty rate of 18.19%. The median rental costs in recent years comes to $706 per month, and the median house value is $68,600. The median age in Colchester is 41.3 years, 43.9 years for males, and 39.7 years for females.
According to the most recent ACS, the racial composition of Colchesterwas:
Rate of Home Ownership
Average Family Size
Average Household Size
The highest rate of high school graduation is among 2+ races people with a rate of 100.00%.
The highest rate of bachelors degrees is among hispanic people with a rate of 100.00%.
99.53% of Colchester residents speak only English, while 0.47% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 0.31% of the population.
Overall Poverty Rate
Male Poverty Rate
Female Poverty Rate
The race most likely to be in poverty in Colchester is White, with 18.08% below the poverty level.
The race least likely to be in poverty in Colchester is Hispanic, with 100.00% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 1.14%. Among those working part-time, it was 22.26%, and for those that did not work, the poverty rate was 40.61%.
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 Colchester
99.55% of Colchester residents were born in the United States, with 83.07% having been born in Illinois. 0.45% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.