| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| San Idelfonso | city | Carazo | Nicaragua | 11.73 | -86.07 | 383 | 16297 |
| San Ignacio | city | Granada | Nicaragua | 11.92 | -86.00 | 830 | 83992 |
| San Ignacio | city | Granada | Nicaragua | 11.99 | -85.96 | 150 | 58523 |
| San Ignacio | city | Masaya | Nicaragua | 11.95 | -86.22 | 2070 | 50262 |
| San Ignacio | city | Chinandega | Nicaragua | 12.77 | -87.16 | 72 | 7404 |
| San Ignacio | city | Granada | Nicaragua | 11.87 | -85.96 | 1013 | 27438 |
| San Ignacio | city | Rivas | Nicaragua | 11.52 | -86.08 | 167 | 6150 |
| San Ildefonso | city | Managua | Nicaragua | 12.26 | -86.08 | 232 | 34287 |
| San Isidro | city | Granada | Nicaragua | 12.20 | -85.95 | 187 | 3675 |
| San Isidro | city | Leon | Nicaragua | 12.43 | -86.80 | 830 | 34415 |
| San Isidro | city | Matagalpa | Nicaragua | 12.93 | -86.20 | 1669 | 13186 |
| San Isidro | city | Rivas | Nicaragua | 11.61 | -86.01 | 301 | 7722 |
| San Isidro | city | Managua | Nicaragua | 12.21 | -86.30 | 127 | 11699 |
| San Isidro | city | Boaco | Nicaragua | 12.56 | -85.49 | 1971 | 2831 |
| San Isidro | city | Carazo | Nicaragua | 11.68 | -86.30 | 213 | 8004 |
| San Isidro | city | Atlantico Sur | Nicaragua | 12.32 | -84.33 | 131 | 0 |
| San Isidro | city | Chinandega | Nicaragua | 12.55 | -87.18 | 39 | 16475 |
| San Isidro de la Cruz Verde | city | Managua | Nicaragua | 12.09 | -86.26 | 964 | 390439 |