Top 10 most:
1. Los Angeles, CA (10 M)
2. Cook, IL (5.2 M)
3. Harris, TX (4.7 M)
4. Maricopa, AZ (4.4 M)
5. San Diego, CA (3.2 M)
6. Orange, CA (3.1 M)
7. Kings, NY (2.73 M)
8. Miami-Dade (2.7 M)
9. Dallas (2.6 M)
10. Riverside (2.4 M)
Bottom 10 least:
1. Loving, TX (64)
2. Kalawao, HI (82)
3. King, TX (265)
4. Kenedy, TX (350)
5. McPherson, NE (399)
6. Blaine, NE (431)
7. Arthur, NE (434)
8. Petroleum, MT (496)
9. McMullen, TX (600)
10. Loup, NE (607)
The 7 times that I'm talking about are Bialystok-Minsk (Jun-Jul 1941), Uman (Jul 1941), Smolensk (Jul-Sept 1941), Kiev (Sept 1941), Vyazma and Bryansk pockets (both Oct 1941), and 3rd Kharkov (May 1942) and there are more