Below are a list of the cities located in Peoria County, IL. There are 45 total unique zip codes in Peoria County, Illinois. The time zone for Peoria County is the Central Daylight Time zone and they follow daylight savings time. The Federal Information Processing System (FIPS) Code for echo $county.' County, '.$state_abbrev ?> is 17143.
The population in Peoria County, IL is currently 179,432. That is a decrease of -3.76% vs the population of 186,494 in 2010.
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