Most Densely Populated US Counties

Name the most densely populated counties in the US.
INCLUDES COUNTY EQUIVALENTS
Quiz by Oatmeal11
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Last updated: March 8, 2021
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First submittedFebruary 21, 2021
Times taken29
Average score68.4%
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State
County
Pop/mi^2
NY
New York
69,468
NY
Kings
35,369
NY
Bronx
32,903
NY
Queens
20,554
CA
San Francisco
17,179
NJ
Hudson
13,732
MA
Suffolk
12,417
PA
Philadelphia
11,379
DC
Washington
9,857
VA
Alexandria
9,314
VA
Arlington
8,853
NY
Richmond
8,030
MD
Baltimore
7,672
NJ
Essex
6,212
VA
Falls Church
6,170
VA
Manassas Park
5,633
IL
Cook
5,495
NJ
Union
5,216
MO
St. Louis
5,157
NY
Nassau
4,705
+1
Level 67
Mar 8, 2021
I believe one of the NY counties you are referring to is actually in New Jersey.
+1
Level 74
Mar 8, 2021
Indeed it is! Thanks for catching that