According to the 1940 census, Clark was the most common last name beginning with the letter 'C', followed by Campbell and Carter. Click on the names below to learn more about their meaning, history and origins.
| Surname | Rank* |
|---|---|
| Clark | 1 |
| Campbell | 2 |
| Carter | 3 |
| Cook | 4 |
| Collins | 5 |
| Cox | 6 |
| Cooper | 7 |
| Cole | 8 |
| Coleman | 9 |
| Carlson | 10 |
| Crawford | 11 |
| Cohen | 12 |
* Based on population in the 1940 U.S. Census