Statistics for Most Populous U.S. County by Letter

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Letter	Population	State	Answer	% Correct
C	5,240,700	IL	Cook	89%
D	2,480,331	TX	Dallas	89%
K	2,592,149	NY	Kings	89%
L	10,017,068	CA	Los Angeles	89%
N	1,626,159	NY	New York	89%
O	3,114,363	CA	Orange	89%
P	1,553,165	PA	Philadelphia	89%
Q	2,296,175	NY	Queens	89%
S	3,211,252	CA	San Diego	89%
U	551,891	UT	Utah	89%
R	2,292,507	CA	Riverside	78%
A	1,578,891	CA	Alameda	67%
F	1,212,263	OH	Franklin	67%
J	756,832	KY	Jefferson	67%
W	1,775,273	MI	Wayne	67%
B	1,838,844	FL	Broward	56%
M	4,009,412	AZ	Maricopa	56%
Y	438,965	PA	York	56%
E	919,866	NY	Erie	44%
G	859,304	GA	Gwinnett	44%
H	4,336,853	TX	Harris	44%
V	839,620	CA	Ventura	44%
T	1,911,541	TX	Tarrant	33%
Z	14,390	TX	Zapata	22%
I	282,234	MI	Ingham	11%