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Most Populous City by U.S. County

Can you name the largest city in each of these counties?
If two counties have the same name, we are referring to the larger one
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Last updated: January 16, 2024
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First submittedNovember 23, 2012
Times taken20,030
Average score65.0%
Rating4.38
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County
City
Cook
Chicago
Harris
Houston
_____-Dade
Miami
Maricopa
Phoenix
Orange (CA)
Anaheim
Orange (FL)
Orlando
Clark
Las Vegas
County
City
Santa Clara
San Jose
King
Seattle
Wayne
Detroit
Cuyahoga
Cleveland
Fulton
Atlanta
Broward
Fort Lauderdale
Multnomah
Portland (OR)
County
City
Allegheny
Pittsburgh
Alameda
Oakland
Bexar
San Antonio
Hennepin
Minneapolis
Wake
Raleigh
Erie
Buffalo
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41 Comments
+4
Level 43
Dec 27, 2012
I thought New York City was in New York County; the Bronx being a borough of New York. Also, knowing which Orange County would have helped. There are at least 3.
+5
Level 66
Dec 27, 2012
And to be technical, Anaheim is still the largest city in any of the Orange Counties in the U.S.: a few thousand more residents than Santa Ana, 100,000 or so more than Orlando, and many more than French Lick, Indiana or Chapel Hill, North Carolina, or whatever the largest cities in the Orange County in New York, Texas, Vermont and Virginia might be.
+5
Level 89
Apr 26, 2023
Just wanted to say that the largest city in Orange County, Texas is Orange, Texas. That is all.
+5
Level 73
Jun 8, 2023
The same is true in Orange County, Virginia.
+3
Level 54
Sep 21, 2023
The largest city in Orange County VT is Randolph with a population of 2083
+4
Level 67
Jul 21, 2020
yes I recognize that this is 8 years later. NYC has 5 boroughs which are all independent counties (New York, Bronx, Queens, Kings, and Richmond), so technically any of the 5 could have been used for NYC
+3
Level 61
Dec 28, 2012
Just a thought, but I think it'd help if the states each county is in were included in the hint.
+8
Level 74
Dec 28, 2012
Adding states would ruin the quiz. Whose first guess wouldn't be Detroit if they knew Wayne County was in Michigan?
+5
Level 79
May 21, 2013
without states I found that most of the quiz I was just typing in random big cities since who the heck knows where all of these counties are?
+5
Level 66
May 24, 2016
Agreed. got 14/18, by association of county with city. Either from travel, or tv shows/news. i.e.: Cook county jail.. Chicago. Detroit-Wayne County Airport. etc...

Try taking the county quizzes for each state... :)

+4
Level 96
Feb 12, 2019
detroit's in michigan?
+5
Level 92
Sep 11, 2023
It should be yellow boxed so people know the answer. What's the point in just randomly typing big cities to fill in blanks you aren't even looking at? How is that testing yourself?
+2
Level 75
Nov 17, 2014
Am with kalbahamut here. 16/18 and I used exactly the same method.
+2
Level 74
Dec 19, 2015
Yep, agree with that method. Got 15 out of 18. Even without the states name, you can get a pretty high score.
+4
Level 63
Apr 24, 2016
Uh, you might need to brush up on the concept of a quiz.
+2
Level 25
Dec 29, 2012
I only knew one of these. I managed to get 9/18 just by guessing large American cities!
+3
Level 66
Apr 22, 2014
14 here. Most are pretty easy if you've been to those cities or pay attention to news "Xyz county sheriff reported... blah blah..."
+3
Level 36
Jul 31, 2014
I don't think you should put the state. But Orange is completely ambiguous. Both Florida and California have big counties named Orange. And both have a Disney park. So put the state for Orange, cuz otherwise there are multiple correct answers.
+3
Level 92
Jul 30, 2018
How many states have Orange Counties which one might consider the largest Orange County? Now, out of that very, very narrow field, what is the largest city? Maybe you accomplished what this quiz hoped you would: Learning
+2
Level 56
Aug 7, 2014
Fun and challenging quiz!
+3
Level 28
Aug 27, 2014
White Plains is also in Westchester County. It's also a big city.
+2
Level 69
Sep 1, 2014
Yonkers, really?
+3
Level 93
Sep 23, 2014
Yeah, Westchester (Yonkers) is pretty obscure. Hennepin (Minneapolis) would be a good alternative, as would Shelby (Memphis), or Travis (Austin).
+3
Level 73
Jan 14, 2015
Agree, although I did try White Plains. Westchester County was the setting for the old Trixie Belden books I read as a pre-teen girl in the 1960s. There was never any mention of Yonkers in the books, only White Plains and the fictional town of Sleepyside-on-Hudson.
+1
Level 71
May 15, 2023
I knew where Westchester is from the 3000+ counties quiz (New York is one of the first states I memorized) but could not think of any big cities there :/
+2
Level 73
Jan 14, 2015
I only missed three and didn't guess, but I can't claim geographical brilliance. I knew many of these because my kids either lived in these cities at some point or married people from the areas. The Florida ones were easy for anyone who watches national election returns. The only reason I got Cleveland was because of the opening song about the Cuyahoga River from the movie, Major League.
+2
Level 73
May 5, 2016
Yeah, many of these I know because of watching election returns. Yonkers I agree is too obscure, and the Texas ones I got by random guessing.
+4
Level 78
Mar 24, 2020
This is so much easier if you just forget the counties and name random big cities
+3
Level 46
Sep 12, 2020
I live in Virginia and it is different. Most states use a different system where cities are in counties but where I live, cities and Counties are separate
+1
Level 71
May 15, 2023
Did anyone else know what states the counties are in but not know the biggest cities?? I knew the states of half the ones I missed from that big "name all the counties" quiz but couldn't remember (or just didn't know) which cities were located there :/
+2
Level 80
Jan 16, 2024
Nothing like some vote counting controversy to learn where some of these counties are.
+2
Level 82
Jan 17, 2024
Watching US election coverage definitely helped me! 17/20
+1
Level 73
Jan 17, 2024
Needs to be yellow-box.
+2
Level 82
Feb 5, 2024
This was a good quiz but I feel like it should be yellow-boxed, otherwise it's "largest cities in the U.S." in disguise.
+2
Level 58
Apr 28, 2024
good quiz, could you specify the state for Erie County however?
+2
Level 61
Apr 28, 2024
Tough Quiz - a lot of the counties were familiar, from TV shows, airports, and election night results - but a lot were guesses for me.

Is there a reason these particular counties were chosen? It's just curiosity on my part as to how these were selected over others.

+1
Level 51
Apr 30, 2024
I'm also wondering about this
+1
Level 72
Feb 15, 2025
I know 1/20 counties and guessed 18/20 cities. This is the point where you need the yellow box
+1
Level 70
Feb 25, 2025
Can you specify Erie county, NY?
+1
Level 81
May 6, 2025
Erie County, NY has over three times the population of the one in Pennsylvania. I think it's alright.
+1
Level 66
Jan 17, 2026
Grand Marais should count for Cook county haha