| MFS Municipal Income Fund | $6.9B |
| MFS California Municipal Bond Fund | $788.1M |
| MFS North Carolina Municipal Bond Fund | $546.6M |
| MFS Massachusetts Municipal Bond Fund | $408.8M |
| MFS Municipal Intermediate Fund | $385.9M |
| MFS Virginia Municipal Bond Fund | $344.8M |
| MFS South Carolina Municipal Bond Fund | $238.6M |
| MFS Pennsylvania Municipal Bond Fund | $189.0M |
| MFS New York Municipal Bond Fund | $186.7M |
| MFS Maryland Municipal Bond Fund | $157.2M |
| MFS Arkansas Municipal Bond Fund | $140.0M |
| MFS Georgia Municipal Bond Fund | $124.4M |
| MFS Tennessee Municipal Bond Fund | $93.3M |
| MFS West Virginia Municipal Bond Fund | $83.6M |
| MFS Alabama Municipal Bond Fund | $70.6M |
| MFS Mississippi Municipal Bond Fund | $61.6M |