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)