12 groups of order 204.
| SmallGroups | group |
|---|---|
| (204, 1) | Dic3×C17 #6072 |
| (204, 2) | C3×Dic17 #6073 |
| (204, 3) | Dic51 #6074 |
| (204, 4) | C3×C4×C17 #6075 |
| (204, 5) | C3×#595 #6076 |
| (204, 6) | C3⋊#595 #6077 |
| (204, 7) | D3×D17 #6078 |
| (204, 8) | A4×C17 #6079 |
| (204, 9) | C2×C3×D17 #6080 |
| (204, 10) | C2×D3×C17 #6081 |
| (204, 11) | C2×D51 #6082 |
| (204, 12) | C22×C3×C17 #6083 |