PUBLIC REGISTRY INFORMATION
533 registered sex offenders in Middlesex County, Massachusetts
See the October 2026 registry snapshot for Middlesex County and search the map near a specific address.
Registry snapshot
October 2026- Registry records
- 533
- Registry source
- Massachusetts Sex Offender Registry
This is a snapshot. Check the official registry for current information.
Registry statistics
Population and rate comparison- Registry records per 10,000 residents
- 3.3
- Population estimate
- 1,638,365
- About 1 registry record per
- 3,074 residents
About this snapshot
The October 2026 snapshot lists 533 registry records in Middlesex County, Massachusetts. With an estimated population of 1,638,365, that is 3.3 registry records per 10,000 residents. This is 49% below the Massachusetts statewide rate (6.4 per 10,000).
Explore registered offender addresses near Middlesex County
Cities near Middlesex County
| Location | Registry records | Population estimate | Records per 10,000 |
|---|---|---|---|
| Dorchester | 158 | — | — |
| Athol | 33 | 8,801 | 37.5 |
| East Boston | 30 | — | — |
| Ayer | 16 | 3,098 | 51.6 |
| Waltham | 16 | 64,902 | 2.5 |
| Salisbury | 12 | 5,656 | 21.2 |
| Amesbury | 9 | 17,403 | 5.2 |
| Bedford | 6 | — | — |
| Ashland | 5 | — | — |
| Arlington | 4 | 46,350 | 0.9 |
| Ashburnham | 4 | — | — |
| Burlington | 4 | 26,274 | 1.5 |
| Pepperell | 4 | 1,971 | 20.3 |
| Berlin | 3 | — | — |
| Hudson | 3 | 15,719 | 1.9 |
| Reading | 3 | 25,612 | 1.2 |
| Wayland | 2 | — | — |
| Acton | 1 | — | — |
| Belmont | 1 | 27,175 | 0.4 |
| Dunstable | 1 | — | — |
ZIP codes near Middlesex County
| Location | Registry records | Population estimate | Records per 10,000 |
|---|---|---|---|
| ZIP code 01105 | 104 | 11,843 | 87.8 |
| ZIP code 01201 | 102 | 44,848 | 22.7 |
| ZIP code 01420 | 81 | 41,839 | 19.4 |
| ZIP code 01104 | 50 | 23,209 | 21.5 |
| ZIP code 01020 | 37 | 30,167 | 12.3 |
| ZIP code 01301 | 37 | 17,876 | 20.7 |
| ZIP code 01331 | 37 | 13,922 | 26.6 |
| ZIP code 01107 | 24 | 12,009 | 20.0 |
| ZIP code 01844 | 18 | 53,420 | 3.4 |
| ZIP code 01432 | 14 | 8,521 | 16.4 |
| ZIP code 01930 | 12 | 30,075 | 4.0 |
| ZIP code 01952 | 12 | 9,281 | 12.9 |
| ZIP code 02139 | 12 | 40,033 | 3.0 |
| ZIP code 01510 | 8 | 15,563 | 5.1 |
| ZIP code 01532 | 8 | 15,750 | 5.1 |
| ZIP code 01760 | 6 | 36,782 | 1.6 |
| ZIP code 01863 | 4 | 9,796 | 4.1 |
| ZIP code 02129 | 4 | 20,032 | 2.0 |
| ZIP code 01430 | 3 | 6,481 | 4.6 |
| ZIP code 02421 | 2 | 18,080 | 1.1 |
Other counties in Massachusetts
| Location | Registry records | Population estimate | Records per 10,000 |
|---|---|---|---|
| Worcester County | 804 | 867,788 | 9.3 |
| Suffolk County | 722 | 785,121 | 9.2 |
| Hampden County | 689 | 462,815 | 14.9 |
| Bristol County | 552 | 582,270 | 9.5 |
| Essex County | 507 | 813,054 | 6.2 |
| Plymouth County | 317 | 535,075 | 5.9 |
| Norfolk County | 226 | 730,082 | 3.1 |
| Berkshire County | 208 | 129,430 | 16.1 |
| Barnstable County | 138 | 231,668 | 6.0 |
| Hampshire County | 133 | 162,028 | 8.2 |
| Franklin County | 106 | 70,944 | 14.9 |
| Dukes County | 6 | 20,933 | 2.9 |
| Nantucket County | 3 | 14,483 | 2.1 |
Each area shows its own total. City, county, and ZIP totals can overlap. Population figures, where shown: U.S. Census Bureau, ACS 5-year estimate.
Frequently asked questions
How many registered sex offenders are listed in Middlesex County?
The October 2026 snapshot lists 533 registry records in Middlesex County, Massachusetts. Counts may differ from official registry totals. Check the official registry for current details.
How do city, county, and ZIP totals relate?
City, county, and ZIP boundaries can overlap, so the same registry record may appear in more than one area.
How can I check registry information near an address?
Open the free interactive map, enter an address, and choose a search radius. Verify identity and current status with the official registry.
Check a specific address
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