We get gas in Diamond Springs, Ca. and it’s 4.19 a gallon. That’s mid-grade though.
$3.14 in Murrells Inlet, SC today
I filled up last night - $1.45/L. I do wish I hadn’t been to lazy to buy petrol on Tuesday when it was $1.28/L.
Yesterday, 3.90, in the far northwestern Chicago suburbs.
$3.59 a gallon yesterday in Tucson. But if I had driven another 2.5 miles closer to the interstate, it would have been six cents a gallon cheaper. I need to start using the Gas Buddy app on my phone more.
$3.69, but that was the premium price (regular was $3.40). My engine was designed for high octane and I hate hate hate it when it pings on the crappy stuff.
Denver, I didn’t fill up, but drove past a place that had regular for $3.64.
I don’t take notice. $20 goes in, however many litres that is. More than 10, less than 20.
In Central Victoria, Australia: 1.52AUD per liter, which Google says is 5.59 USD per gallon.
$3.19 outside of Nashville. Yesterday.
StG
$NZ2.159/l which is about $US6.14 /gal (at 3.78l/gal and .752 USD/ NZD)
Are most of the “Over $4.31”'s outside the US? Or California?
Besides that outlier, the poll results appear to reflect the current national average according to AAA.
Looks like the OP should have added a few more higher prices at the bottom, there. 
(More) seriously, though, since I’ve moved to Australia, it’s really hit home just how cheap gasoline is in the States.
3.19 earlier today in Owasso, OK (near Tulsa)
Outside Oslo, Norway. I don’t wanna talk about it.
About $5.43 in South Africa
Texas (DFW area). $3.4_ at the pump a few days ago. I didn’t notice the last digit. My truck has a large tank, and I was happy to fill it for less than $100 again. I know there’s not much difference between $97 and $105, but if just feels better for some reason.
To be precise, since you’re in an interior province, you’re paying R12.20/l which at current exchange rates is $5.41/gal.
Now, down here at the coast I’m “only” paying R11.87/l or $5.27/gal.
Gasoline is one of the few cheap items here. In Luanda we pay Kz56/l which works out to about $2.23 per gallon.
I voted the highest band - way off the scale actually at $8.04 equivalent.
£1.37 a litre at the Shell station up the road here in Edinburgh.