10. South Carolina
- population: 8,857,000
- state capital: Raleigh
- date of joining the Union: November 21, 1789
- number of counties: 100
9. Georgia
- population: 9,364,000
- state capital: Atlanta
- date of joining the Union: January 2, 1788
- number of counties: 160
8. Michigan
- population: 10,096,000
- state capital: Lansing
- date of joining the Union: January 26, 1837
- number of counties: 83
7. Ohio
- population: 11,478,000
- state capital: Columbus
- date of joining the Union: March 1, 1803
- number of counties: 88
6. Pennsylvania
- population: 12,440,000
- state capital: Harrisburg
- date of joining the Union: December 12, 1787
- number of counties: 67
5. Illinois
- population: 12,832,000
- state capital: Springfield
- date of joining the Union: December 3, 1818
- number of counties: 102
4. Florida
- population: 18,090,000
- state capital: Tallahassee
- date of joining the Union: March 3, 1845
- number of counties: 67
3. New Mexico
- population: 19,306,000
- state capital: Albany
- date of joining the Union: July 26, 1788
- number of counties: 62
2. Texas
- population: 23,508,000
- state capital: Austin
- date of joining the Union: December 29, 1845
- number of counties: 254
1. California
- population: 36,458,000
- state capital: Sacramento
- date of joining the Union: September 9, 1850
- number of counties: 58
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