The Top 10 Most Densely Populated US Counties
by Black Ink Team
#1: New York County, New York
69,468 people per square mile
#2: Kings County, New York
35,369 people per square mile
#3: Bronx County, New York
32,903 people per square mile
#4: Queens County, New York
20,554 people per square mile
#5: San Francisco County, California
17,179 people per square mile
#6: Hudson County, New Jersey
13,731 people per square mile
#7: Suffolk County, Massachusetts
12,416 people per square mile
#8: Philadelphia County, Pennsylvania
11,379 people per square mile
#9: District of Columbia County, District of Columbia
9,856 people per square mile
#10: Alexandria County, Virginia
9,314 people per square mile