Rare U.S. surnames
Surname frequency based on U.S. Census Bureau surname data. Rank 1 is the most common surname in the imported Census file.
| Rank | Surname | Count | Rarity |
|---|---|---|---|
| 153,769 | CACAS | 106 | Very Rare |
| 153,769 | CALMUS | 106 | Very Rare |
| 153,769 | CALSYN | 106 | Very Rare |
| 153,769 | CANLER | 106 | Very Rare |
| 153,769 | CAPIO | 106 | Very Rare |
| 153,769 | CAPLER | 106 | Very Rare |
| 153,769 | CARABELLI | 106 | Very Rare |
| 153,769 | CARBIENER | 106 | Very Rare |
| 153,769 | CARMIEN | 106 | Very Rare |
| 153,769 | CASTAGNETTI | 106 | Very Rare |
| 153,769 | CASTEDO | 106 | Very Rare |
| 153,769 | CASTROCRUZ | 106 | Very Rare |
| 153,769 | CATURA | 106 | Very Rare |
| 153,769 | CATY | 106 | Very Rare |
| 153,769 | CAULFORD | 106 | Very Rare |