Eureka is a city located in Woodford County Illinois. With a 2020 population of 5,213, it is the 327th largest city in Illinois and the 6411th largest city in the United States. Eureka is currently declining at a rate of -0.13% annually and its population has decreased by -4.96% since the most recent census, which recorded a population of 5,485 in 2020. Spanning over 3 miles, Eureka has a population density of 1,942 people per square mile.
The average household income in Eureka is $71,915 with a poverty rate of 13.75%. The median rental costs in recent years comes to $638 per month, and the median house value is $133,800. The median age in Eureka is 34.5 years, 33 years for males, and 36.9 years for females.
According to the most recent ACS, the racial composition of Eurekawas:
Rate of Home Ownership
Average Family Size
Average Household Size
The highest rate of high school graduation is among black people with a rate of 100.00%.
The highest rate of bachelors degrees is among 2+ races people with a rate of 96.08%.
96.98% of Eureka residents speak only English, while 3.02% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 2.75% of the population.
Overall Poverty Rate
Male Poverty Rate
Female Poverty Rate
The race most likely to be in poverty in Eureka is Multiple, with 59.46% below the poverty level.
The race least likely to be in poverty in Eureka is Other, with NaN% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 4.51%. Among those working part-time, it was 17.16%, and for those that did not work, the poverty rate was 30.91%.
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 Eureka
98.16% of Eureka residents were born in the United States, with 78.16% having been born in Illinois. 0.78% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.