O Fallon Gas Prices - Find the Lowest Gas Prices in O Fallon, IL

Search for the lowest gasoline prices in O Fallon, IL. Find local O Fallon gas prices and O Fallon gas stations with the best prices to fill up at the pump today

National and Illinois Gas Price Averages

National Avg.	IL Reg. Avg.	IL Plus Avg.	IL Prem. Avg.	IL Diesel Avg.
$3.746 12/29/2025	$3.735 12/29/2025	$4.239 12/29/2025	$4.676 12/29/2025	$4.312 12/29/2025

Today's lowest gas prices in Illinois and around O Fallon

Station	Regular	Plus	Premium	Diesel
Murphy USA 1206 Ave Of Mid America, Effingham, IL	$2.99 12/29/2025	$3.49 12/29/2025	$3.99 12/29/2025	$4.09 12/29/2025
MotoMart 1315 N 3rd St, Effingham, IL	$2.99 12/29/2025	$3.79 12/29/2025	$4.19 12/29/2025	12/29/2025

Find all gas prices in and around O Fallon, IL.

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In and Around O Fallon, IL

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1	db.towns.find( {"sef_url":"o-fallon-il"}, [] ).sort( [] ).limit( 1 ).skip( 0 )	1	4
2	db.pages.find( {"type":"town","slug":{"$in":["gas-prices"]},"site.hostname":"americantowns.com"}, [] ).sort( [] ).limit( 1 ).skip( 0 )	1	1
3	db.towns.find( {"sef_url":"o-fallon-il"}, [] ).sort( [] ).limit( 1 ).skip( 0 )	1	2
4	db.tokens.find( {"sef_url":{"$in":["usa","il","saint-clair-county-il","o-fallon-il"]}}, [] ).sort( [] ).limit( 0 ).skip( 0 )	4	2
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6	db.events_radius_cache.find( {"_id":"508e33eaf9b815036948052bed5e4fec"}, [] ).sort( [] ).limit( 1 ).skip( 0 )	1	1
7	db.events.find( {"start":{"$gte":"MongoDate(0.00000000 1766988000)"},"geo":{"$geoWithin":{"$center":[[-89.89669799804688,38.562801361083984],0.36231884057971014]}}}, ["location_string","event_id","partner_id","address","sef_tail","tags","title","start","end","date_string","time_string","image_url","group_id","group_name","group_sef_tail","venue_name"] ).sort( {"start":1} ).limit( 11 ).skip( 0 )	11	61
8	db.events_cache.count( {"_id":"88711baff5146483d9af42c7273f3cb8"} )	0	1
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