Dimitar Mardov is #2 in the country for players Aged 8 in the US as of the June, 2017 Official US Chess Ratings.

Aren Emrikian is #3 in the nation for players Ages 7 and Under. Ranking #6 are George Li for 17-year olds and Aydin Turgut for 12-year olds.

David Peng is the seventh rated 14-year old in the country. Both Alex Bian (16) and Arthur Xu (10) rank #10 in their respective age group.

Complete top 50 lists from the Illinois perspective are listed below.

Rank   Illinois Player's Name (USCF ID)   Rating
         
Ages 7 & Under
3   Emrikian, Aren C (15766785)   1786
36   Shetty, Anshul P (15752957)   1293
43   Chennareddy, Yuvraj Rudra (15944053) -- Age 6   1257
         
Age 8
2   Mardov, Dimitar (15205818)   2014
         
Age 9
21   Wang, William (15270976)   1783
24   Yong, David (15273720)   1742
26   Zhao, Alex (15335115)   1717
         
Age 10
10   Xu, Arthur (14968896)   2036
62   Kaplan, Avi Harrison (15263943)   1714
         
Age 11
30   Rao, Patrick (14855075)   1913
         
Age 12
6   Turgut, Aydin (14284734)   2217
         
Age 13
23   Wang, Ricky (14403974)   2121
33   Daniels, Jason Scott (14107163)   2062
         
Age 14
7   Peng, David Tianjian (14195454)   2325
32   Li, Marissa (14468490)   2110
         
Age 15
11   Furfine, Jacob (13089315)   2314
28  
Do, Vincent (13666696)
  2172
34  
Kalghatgi, Nikhil (13797221)
  2132
         
Age 16
10   Bian, Alex (13257335)   2343
=26   Stevens, Matthew James (13788934)   2219
46   Bronfeyn, Daniel (13720325)   2136
49   Curcio, Jack Thomas (13451367)   2122
         
Age 17
6   Li, Zhaozhi (13646954)   2423
35   Adve, Anshul (13296020)   2194
39   Bartochowski, Nicholas J (13216472)   2156
         
Age 18
12   Lehmann, Spencer (13457744)   2295
30   Hrach, Jonathan (14094872)   2204
42   Denby, Caleb Sean (14361200)   2105