As of right now, there’s only one city/area in the USA that actually has 100 providers in its Top 100 list.  Anyone want to take a shot at what it is?  No peeking, that would spoil the challenge and fun of it.  

Let’s give folks a day or so to take their best guess before revealing the answer, ok?

FWIW it was not the city/area I thought it would be.

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You said no Peking. Kind of obvious. Peking isn't even on the list of lists. (Shanghai is.)
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I checked my #1 guess and I was wrong.  
I checked my #2 guess and there were 100 on the list of Top 100 for that city/area.
I checked a few more, all less than 100, but I didn't check them all.
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I'll explain my reasoning after the contest is over and I've received my prize.  
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BTW ... what's the prize?

Well there are a few Cantons, Ohio and Georgia are a couple places with a city called Canton that comes to mind, but there is no longer such a city in China. Come to think of it there is no longer a Bombay India or a Stalingrad Russia, I guess by the time BLM gets done with us we won't have a Washington DC either. I wonder what the new name of our nations capitol is going to be in a few years?

 
And if there is only one city that still has 100 providers on it's top 100 list, is that city REALLY that hard to guess? Keep in mind one of the two obvious choices has been under lock down for COVID for the last several months making it VERY difficult for most of the providers previously on the list to be able to qualify by having any recent reviews, which is one of the prerequisites to make in on the "top lists" Personally I hate the top lists, I think they are the biggest factor in review manipulation by providers, but I do remember that not only do they have to have a certain number of reviews to qualify. I believe the number is 20, but they also have to get a new review either every sixty, or it might be every ninety days to remain on the list. With one city having had over a third of the COVID deaths in the entire country, it's not surprising that reviews in that city were at an all time low and are just now starting to come back.

Guessing NY, Dallas, and Miami have high numbers too.
But what the hell do I know... I’ve never ventured from the DMV area for this fun... other than an amp visit or two in other places.

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Not my guess, but Beijing is pretty funny. One provider in the top 100, with a 7.79 and 9.00. Named Chubby Cat.

No guess because I looked. I didn't even know there was that feature, I just thought it was top 100 period.

but they don't mean much, in some cities you will see providers with average scores around 6-6 making it onto the top 100 list.

 
IMO The "top lists" were/are one of the WORST features on TER, it is most likely the leading factor where it comes to review manipulation and having unscrupulous providers literally extorting their clients to ensure they stay at or near the top of these lists.

District, Maryland, Virginia.  Extended metro area around DC.

Agreed, but the OP said, "No peeking," which I assumed was a typo for "Not Peking." Since the OP also said USA city/area, I wanted to point out his "helpful" misdirection.  
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GaG: Go back and proof read your reply on fake ED pills:  
http://www.theeroticreview.com/discussion-boards/ter-general-board-12/i-actually-used-to-something-similar-when-doing-a-lot-of-fucking-too-969876  
Twice in the middle paragraph, you say, "almost to cum" which seems to be missing an "impossible." A common complaint with some users. Is it possible that you were drunk when you wrote that?

NEVER say something is "impossible"  I was just following good advice. lol

 
And yes, while I did correct it, it took me two more attempts to get it right.

 
Back to "impossible to cum" at my "advanced age" it's almost impossible to cum after seeing four or five different women even if I am not drunk or using a boner pill,  I think when you add either of those other two factors into the equation, it's the word "almost" that I don't really need to use. lol

LA (as in Los Angeles)!

Thanks for playing. To the two people who said LA, congratulations! As of yesterday, it was really close between LA and a couple other cities, but only LA had 100 as of the time of my OP.  

As for guesses like Beijing... 10 licks with a wet rice noodle for not noticing “in the USA“ in the OP.  😄

called me out when I first started posting here was for speaking in absolutes.  You literally beat it into me.  Therefore, impossible can never be used here.