# MFS Municipal Series Trust

MFS Municipal Series Trust (CIK 751656) is an SEC-registered fund company with 16 reporting fund series and $10.8B in net assets as of 2026-03-31.

## Registrant

- CIK: 751656
- File number: 811-04096
- LEI: 5493001Q9KE7H84Z5340
- Address: 111 Huntington Avenue, Boston, US-MA, 02199
- Phone: 617-954-5000
- Net assets: $10.8B
- Total assets: $10.9B
- Fund series: 16
- Latest report: 2026-03-31

## Fund series (16)

| Series | Net assets |
| --- | --- |
| [MFS Municipal Income Fund](https://search.stillhousedata.com/fund/S000002536) | $6.9B |
| [MFS California Municipal Bond Fund](https://search.stillhousedata.com/fund/S000002530) | $788.1M |
| [MFS North Carolina Municipal Bond Fund](https://search.stillhousedata.com/fund/S000002523) | $546.6M |
| [MFS Massachusetts Municipal Bond Fund](https://search.stillhousedata.com/fund/S000002534) | $408.8M |
| [MFS Municipal Intermediate Fund](https://search.stillhousedata.com/fund/S000071695) | $385.9M |
| [MFS Virginia Municipal Bond Fund](https://search.stillhousedata.com/fund/S000002527) | $344.8M |
| [MFS South Carolina Municipal Bond Fund](https://search.stillhousedata.com/fund/S000002525) | $238.6M |
| [MFS Pennsylvania Municipal Bond Fund](https://search.stillhousedata.com/fund/S000002524) | $189.0M |
| [MFS New York Municipal Bond Fund](https://search.stillhousedata.com/fund/S000002522) | $186.7M |
| [MFS Maryland Municipal Bond Fund](https://search.stillhousedata.com/fund/S000002533) | $157.2M |
| [MFS Arkansas Municipal Bond Fund](https://search.stillhousedata.com/fund/S000002529) | $140.0M |
| [MFS Georgia Municipal Bond Fund](https://search.stillhousedata.com/fund/S000002532) | $124.4M |
| [MFS Tennessee Municipal Bond Fund](https://search.stillhousedata.com/fund/S000002526) | $93.3M |
| [MFS West Virginia Municipal Bond Fund](https://search.stillhousedata.com/fund/S000002528) | $83.6M |
| [MFS Alabama Municipal Bond Fund](https://search.stillhousedata.com/fund/S000002521) | $70.6M |
| [MFS Mississippi Municipal Bond Fund](https://search.stillhousedata.com/fund/S000002535) | $61.6M |

## Largest reported holdings (across all series)

| Holding | Value |
| --- | --- |
| [City of Little Rock AR](https://search.stillhousedata.com/security/537374CU2) | $3.0M |
| [Springdale Public Facilities Board](https://search.stillhousedata.com/security/85025WAW1) | $2.8M |
| [Arkansas Development Finance Authority](https://search.stillhousedata.com/security/04108KXB9) | $2.6M |
| [Arkansas State University](https://search.stillhousedata.com/security/0411862N6) | $2.5M |
| [Arkansas Development Finance Authority](https://search.stillhousedata.com/security/04109HBA1) | $2.4M |
| [Puerto Rico Sales Tax Financing Corp. Sales Tax Revenue](https://search.stillhousedata.com/security/74529JPX7) | $2.3M |
| [City of Batesville AR Sales & Use Tax](https://search.stillhousedata.com/security/070669BJ4) | $2.1M |
| [University of Arkansas](https://search.stillhousedata.com/security/914073DU2) | $2.1M |
| [University of Arkansas](https://search.stillhousedata.com/security/914073FB2) | $2.1M |
| [City of Fayetteville AR Hotel & Restaurant Tax Revenue](https://search.stillhousedata.com/security/312665AN2) | $2.0M |
| [Arkansas Development Finance Authority](https://search.stillhousedata.com/security/04084RBZ3) | $2.0M |
| [North Little Rock School District No. 1](https://search.stillhousedata.com/security/660631XZ0) | $2.0M |
| [Arkansas Development Finance Authority](https://search.stillhousedata.com/security/04109FBW7) | $1.9M |
| [City of Springdale AR Sales & Use Tax Revenue](https://search.stillhousedata.com/security/850269GB1) | $1.8M |
| [Texarkana Public Facilities Board](https://search.stillhousedata.com/security/881765DA6) | $1.8M |

## More

- [CIK 751656 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=751656&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/registrant/751656.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.