The city of O'Fallon contains 0 unique zip code(s). O'Fallon covers 11.20 square miles and with a population of 21910 has a population density of 1956.7 people per square mile.

Zipcodes within O'Fallon City Limits
Zipcodes within O'Fallon City Limits With Different Zip Code Name
Display Map of Zip Code  with O'Fallon City Limits62208 Fairview Heights, IL
2010 Population:17376
Display Map of Zip Code  with O'Fallon City Limits62225 Scott AFB, IL
2010 Population:5381
Display Map of Zip Code  with O'Fallon City Limits62254 Lebanon, IL
2010 Population:6089
Display Map of Zip Code  with O'Fallon City Limits62269 O'Fallon, IL
2010 Population:31348
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