O’Fallon’s Official Population Count Increases to 30,440


O’Fallon, Illinois According to the Illinois Secretary of State, the City of O’Fallon’s official population count has increased to 30,440. This new count was determined by the Special Census commissioned by the City of O’Fallon in January, 2017. 

“This new population count not only shows that O’Fallon continues to grow, but it also helps us qualify for state revenues we need to provide essential services,” said Mayor Herb Roach. “This Special Census was well worth the City’s time and energy. Thank you to everyone who participated.”

Municipalities in the State of Illinois collect state revenues, such as State income tax, Motor Fuel Tax, and State Use Tax, based on per capita (population) distributions. As a result of the new population Count, the City expects to receive an additional $247,324 per year, for the next three years, until the 2020 Census counts are finalized.  

The City of O’Fallon paid approximately $130,000 to perform the Special Census.

“If you calculate the amount of increased revenue we will receive over the next three years and subtract the cost of performing the special census, the City will see approximately $610,000 in extra revenue that we would not have received from the state if we would not have performed the Special Census,” said Finance Director Sandy Evans.


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If you would like more information about this topic, please contact Sandy Evans at 618-624-4500 x 8723 or email at Sevans@ofallon.org.