Data Centers in Massachusetts
Massachusetts has 53 data centers identified from primary sources across 7 counties, run by 32 operators, against an industry reference count of 40. Middlesex County holds the largest cluster with 22. ISO-NE runs the grid for all of the state. 1 state measure on record (failed) and 1 local pause; 3 named projects delayed or blocked.
Where Massachusetts's data centers stand
Key facts
- Data centers identified
- 53 from the operators' own facility lists, PeeringDB, OpenStreetMap and Wikidata
- Target count
- 40 facilities in the industry reference count for Massachusetts; this map holds 54 of them (135.0 percent), -14 still to identify
- Largest cluster
- Middlesex County with 22 facilities
- Largest operator
- Crown Castle with 4 facilities
- Grid operator
- ISO-NE
- State measures
- 1 on record, strongest status failed
- Local pauses
- 1 city or county moratoria · 3 local restrictions on the delay watchlist
- Water measures
- 0 state and local, plus the federal measures that apply everywhere
Massachusetts data centers, in short
Massachusetts has 53 data centers identified from primary sources, spread across 21 cities and counties and run by 32 operators. The largest concentration is Boston, with 6 data centers, followed by Springfield with 6 and Waltham with 5.
The operators with the most data centers in Massachusetts are Crown Castle (4), Lumen (4), FirstLight (4), Cogent (3), Equinix (3). Colocation and interconnection providers appear most often because they publish building-level detail; hyperscale campuses appear where the operator or the county names the individual buildings.
Not every operator discloses size. In Massachusetts, 22 publish a floor area and 10 publish a power figure, and each figure is shown against the data center it belongs to rather than added into one number. They are not the same measurement: one operator states the floor area of a single building, another the full capacity of a campus it has only announced.
ISO-NE runs the wholesale power market and the high-voltage grid for all of Massachusetts. 1 statewide measure governing data centers is on record, alongside 1 local pause. 3 named projects in Massachusetts are delayed, blocked or under challenge.
Massachusetts data centers by city
Every data center identified in Massachusetts, grouped by the city or county it stands in, 53 of them across 21 places. Each entry names the operator and links to the source that states it.
Data centers in Boston, Massachusetts
- Crown Castle Boston (1 Summer) Crown Castle 1 Summer St 4 networks
- DataBank Boston (BOS1) DataBank 1 Summer St 4 networks
- FirstLight Boston, MA Data Center FirstLight 3,388 sq ft
- FirstLight data center FirstLight 3,388 sq ft
- Markley Group One Summer Street Boston Markley Group One Summer Street, 5th Floor 920,000 sq ft0.5 MW81 networks
- 230 Congress RTE Group 230 Congress St
Data centers in Springfield, Massachusetts
- Cogent Springfield MA Cogent 400 Taylor Street 31,473 sq ft
- Crown Castle Springfield (1 Federal) Crown Castle 1 Federal St 3 networks
- Lightboard ★ New England Lightboard ★ 1 Federal St 3 networks
- Lumen Network Colocation market: Springfield, MA Lumen
- Lightboard ★ Massachusetts RJ Greeley 1 Federal St. 9 networks
- SPFD.LIT/SPRWMA Verizon Wireless 1441 Main Street
Data centers in Waltham, Massachusetts
- Centersquare Boston (BOS1-A) Centersquare 580 Winter Street 50,150 sq ft38.2 MW5 networks
- Cogent Boston Cogent 100 Fifth Ave, Ste 1030 8,400 sq ft
- Waltham BOS1 Data Center Csquare 580 Winter Street; 115 2nd Avenue 50,150 sq ft38.2 MW
- Equinix BO1 - Boston, Waltham Equinix 74 West Street, 1st Floor 3 networks
- FirstLight Fiber data center FirstLight Fiber 265 Winter Street 1 networks
Data centers in Somerville, Massachusetts
- CoreSite - Boston (BO1) CoreSite 70 Inner Belt Road 273,000 sq ft40 networks
- FirstLight Fiber data center FirstLight Fiber 70 Innerbelt Road 1 networks
- Hub Express System TOWARDEX Technologies International 0 Inner Belt Rd. 9 networks
- Evocative BOS1 VPLS 50 Inner Belt Road Mailing address: Boston 46,000 sq ft6 MW9 networks
Data centers in Cambridge, Massachusetts
- Lumen Boston Lumen 300 Bent St. 19 networks
- Lumen Network Colocation market: Cambridge, MA Lumen
- CMBR.MF1/CMETMA Verizon Wireless 300 Bent Street, Second Floor
Data centers in Worcester, Massachusetts
- Worcester Data Center Cogent 52 LaGrange St 8,250 sq ft
- Crown Castle Worcester (474 Main) Crown Castle 474 Main St 6 networks
- Lumen Network Colocation market: Worcester, MA Lumen
Data centers in Lowell, Massachusetts
- Markley Group data center Markley Group One Markley Way 352,000 sq ft
- Markley Group Lowell Markley Group 2 Prince Ave 1 networks
Data centers in Needham, Massachusetts
- Digital Realty BOS14 - Boston Digital Realty 128 First Avenue 281,000 sq ft8 networks
- LightWave Networks LightWave Networks 105 Cabot St
Data centers in Rockland, Massachusetts
- FirstLight data center FirstLight 3,260 sq ft
- FirstLight Rockland, MA Data Center FirstLight 3,260 sq ft
Data centers in Holyoke, Massachusetts
- Massachusetts Green High Performance Computing Center
Data centers in Lynn, Massachusetts
- EXA CLS Lynn EXA Infrastructure 91 Commercial St 1 networks
Data centers in Marlborough, Massachusetts
- 365 Data Centers Marlboro (MA1) 365 Data Centers 250 Locke Drive 64,800 sq ft2.8 MW1 networks
Data centers in Medford, Massachusetts
- Expedient Boston Expedient 1 Cabot Road 1 networks
Data centers in Wakefield, Massachusetts
- 200 Quannapowitt Pkwy RJ Kelly 200 Quannapowitt Pkwy 1 networks
Data centers in Watertown, Massachusetts
- Centersquare Boston (BOS4-A) Centersquare 486 Arsenal Way 38,977 sq ft19.1 MW2 networks
Data centers in Unincorporated Middlesex County, Massachusetts
- EdgeConneX Boston (EDCBOS01) EdgeConneX 22 Linnell Cir Mailing address: Billerica 54,700 sq ft1.5 MW5 networks
- BO2 Equinix 41 Alexander Road Mailing address: Billerica 75,735 sq ft
- Equinix BO2 - Boston, Billerica Equinix 41-43 Alexander Road Mailing address: Billerica 2 networks
- Prov.net CHF1 (Boston North) Provdotnet 187 Billerica Road Mailing address: Chelmsford 2 networks
Data centers in Unincorporated Worcester County, Massachusetts
- BDC1 - 34 Saint Martin Dr Colocation America 34 Saint Martin Dr Mailing address: Marlborough
- Crown Castle Marlboro (34 St Martin) Crown Castle 34 St. Martin Drive Mailing address: Marlborough 140,000 sq ft2 networks
- Iron Mountain Data Center - Boston (BOS-1) Iron Mountain 171 Bearfoot Rd Mailing address: Northborough 22,000 sq ft3.6 MW1 networks
- TierPoint Boston - Marlborough TierPoint 34 Saint Martin Dr Mailing address: Marlborough 2 networks
Data centers in Unincorporated Essex County, Massachusetts
- Navisite Andover NaviSite 400 Minuteman Rd Mailing address: Andover 1 networks
- TierPoint Boston - Andover TierPoint 15 Shattuck Road Mailing address: Andover 92,700 sq ft2 networks
Data centers in Unincorporated Plymouth County, Massachusetts
- FirstLight Fiber data center FirstLight Fiber 1050 Hingham Street Mailing address: Rockland 1 networks
Data centers in Worcester County, Massachusetts (exact location not published)
- Boston Data Center, BOS-1 Web Werks DataCenter Pvt 22,000 sq ft3.6 MW
Data centers in Elsewhere in Massachusetts
- Boston (customer-owned build) Compass
- Southeastern Massachusetts site Gray Wolf Data Centers 500 MW
Floor area and power appear only where the operator or a government record publishes them. A building the sources describe without naming it is listed as a data center building at its county.
Where they cluster, and who runs them
Facilities by county 7
Operators 32
Cities 15
The rules and the pipeline in Massachusetts
Massachusetts has 1 state measure on record (failed), 1 local pause, and 0 state or local water measures. ISO-NE runs the grid there. Each tracker below holds the full record for Massachusetts, with every entry sourced.
Massachusetts data centers, answered from the record
How many data centers are in Massachusetts?
The industry reference count for Massachusetts is 40 facilities. This map places 53 of them from primary sources, each with a source record you can open, and every entry names the operator, the county, and the grid operator that serves it. The rest are mostly small regional colocation providers and enterprise buildings that no public register describes.
Where are Massachusetts's data centers?
They are listed on this page city by city. By city: Springfield (6), Boston (6), Waltham (5), Somerville (4). By county: Middlesex County (22), Worcester County (8), Hampden County (7). Every data center identified in Massachusetts appears under the city or county it stands in, with its operator and the source that names it.
Who operates data centers in Massachusetts?
32 operators appear in the registers for Massachusetts. The largest by facility count: Crown Castle (4), Lumen (4), FirstLight (4), Cogent (3), Equinix (3). Interconnection-heavy providers are over-represented because PeeringDB records where networks meet; hyperscalers appear where contributors have mapped their buildings.
Does Massachusetts have a data center moratorium?
Massachusetts has 1 state measure on record: Senate amendment: Proposed one-year data-center moratorium (failed, Jul 2026). 1 city or county pause is on record locally. The Massachusetts Data Center Moratorium Tracker carries each measure with its primary source and a weekly changelog.
Which grid operator serves Massachusetts data centers?
ISO-NE runs the wholesale power market and the high-voltage transmission system for all of Massachusetts. Entire state in ISO-NE.
Are new data centers being built or delayed in Massachusetts?
3 named projects in Massachusetts are delayed, blocked, or under challenge, with 3 local restrictions, 0 jurisdictional actions, 0 utility dockets, and 0 flagged queue row or large-load studys. The capital atlas records 0 named sites in Massachusetts and 3 projects blocked, delayed, or halted ($4.2B disclosed).
Facility layer: PeeringDB (Acceptable Use Policy), OpenStreetMap (ODbL, © OpenStreetMap contributors), Wikidata (CC0), US Census Bureau boundaries. Tracker layers: the SAVRN Moratorium Tracker, Water Tracker, Grid Operator Watchlist, Delay Watchlist, and Capital Atlas, each primary-sourced. Method on the national map.
Massachusetts across the SAVRN trackers
The same state followed through the money, the policy, the water and the delays. Each page is primary-sourced and refreshed on its own schedule, and each links back here.