Special Census 2018

The City of Naperville, in conjunction with the U.S. Census Bureau, conducted a partial special census in early 2018 to certify an increase in the city's population in select areas where significant population growth is believed to have occurred since the last full census in 2010.

The results from the partial special census show that Naperville's population increased by 5,988. This means the City's new official population is 147,841, compared to the 2010 figure of 141,853.

The increase will result in $2.38 million of additional funding over the next three years, as State of Illinois income tax, local use tax and motor fuel tax are distributed to municipalities on a per capita basis. 

Frequently Asked Questions

What is a partial special census?
Every 10 years a regular census (or decennial census) is conducted to officially document the population. In between regular censuses, local governments that have seen significant population growth in their community can elect to conduct a special census in order to update their certified population count. What makes a special census partial is that it is not a count of the entire jurisdiction, but only selected areas.

Why did Naperville decide to do a special census?
It is beneficial for the City to have detailed population information. Not only is up-to-date and accurate population data helpful in the City’s decision-making processes, but it also is important to ensure the City is receiving appropriate state revenues. The City receives a portion of the state income tax, use tax, and motor fuel tax based on our population. Additional funding was projected to be about $1.6 million over a period of two years. As it turns out, our projections were conservative, and the City expects to net an additional $2.38 million over a period of three years.