Data Centers in Maryland
Maryland has 48 data centers identified from primary sources across 9 counties, run by 20 operators, against an industry reference count of 58. Montgomery County holds the largest cluster with 10. PJM runs the grid for all of the state. 2 state measures on record (proposed) and 5 local pauses; 4 named projects delayed or blocked.
Where Maryland's data centers stand
Key facts
- Data centers identified
- 48 from the operators' own facility lists, PeeringDB, OpenStreetMap and Wikidata, of which 2 are mapped buildings that carry no name
- Target count
- 58 facilities in the industry reference count for Maryland; this map holds 51 of them (87.9 percent), 7 still to identify
- Largest cluster
- Montgomery County with 10 facilities
- Largest operator
- AiNET with 7 facilities
- Grid operator
- PJM
- State measures
- 2 on record, strongest status proposed
- Local pauses
- 5 city or county moratoria · 13 local restrictions on the delay watchlist
- Water measures
- 0 state and local, plus the federal measures that apply everywhere
Maryland data centers, in short
Maryland has 48 data centers identified from primary sources, spread across 26 cities and counties and run by 20 operators. The largest concentration is Baltimore, with 9 data centers, followed by Calverton with 4 and Laurel with 3.
The operators with the most data centers in Maryland are AiNET (7), Verizon Wireless (4), Atlantech Online (4), TierPoint (2), GI Partners (2). 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 Maryland, 6 publish a floor area and 6 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.
PJM runs the wholesale power market and the high-voltage grid for all of Maryland. 2 statewide measures governing data centers are on record, alongside 5 local pauses. 4 named projects in Maryland are delayed, blocked or under challenge.
Maryland data centers by city
Every data center identified in Maryland, grouped by the city or county it stands in, 48 of them across 26 places. Each entry names the operator and links to the source that states it.
Data centers in Baltimore, Maryland
- AiNET MD-300L AiNET 300 West Lexington Ave 3 networks
- Crown Castle Baltimore (111 Market, 700 E Pratt) Crown Castle 111 Market Pl 8 networks
- Expedient Tidepoint Expedient
- Lumen Baltimore Lumen 300 West Lexington Street 150,000 sq ft80 MW2 networks
- Lumen Network Colocation market: Baltimore, MD Lumen
- TierPoint Baltimore TierPoint 1401 Russell Street 28,000 sq ft7 networks
- BLTM.MF1/BZLMMD Verizon Wireless 900 Fleet Street
- Zayo Baltimore - 111 Market Pl Zayo 111 Market Pl 8 networks
- Johns Hopkins Data Center
Data centers in Calverton, Maryland
- Agile Silver Spring Agile Data Sites 12401 Prosperity Dr Mailing address: Silver Spring
- Databridge Sites Silver Spring DataBridge Sites 12401 Prosperity Drive Mailing address: Silver Spring 12 networks
- Lincoln Rackhouse Silver Spring Lincoln Rackhouse 12401 Prosperity Drive Mailing address: Silver Spring 10 MW
- KAISER PERMANENTE DATA CENTER 11961 BURMANFIELD WAY Mailing address: Silver Spring
Data centers in Laurel, Maryland
- AiNET Laurel AiNET
- AiNET WDC11 AiNET 312 Laurel Ave 3 networks
- Baltimore-area data center (Laurel, Maryland) GI Partners
Data centers in Rockville, Maryland
- Rockville MD Data Center ATI Solutions 6,000 sq ft
- Atlantech Online data center Atlantech Online 1201 Seven Locks Rd 4 networks
- Rockville Data Center Atlantech Online
Data centers in Glen Burnie, Maryland
- AiNET CyberNAP AiNET 300,000 sq ft
- AiNET MD-790R AiNET 7900 Ritchie Highway 1 networks
Data centers in Konterra, Maryland
- AINET - Beltsville AiNET 11700 Montgomery Rd Mailing address: Beltsville 5 networks
- AiNET WDC8 AiNET 11700 Montgomery Rd Mailing address: Beltsville 2 networks
Data centers in Silver Spring, Maryland
- Atlantech Online data center Atlantech Online 1010 Wayne Avenue 1 networks
- Silver Spring Data Center Atlantech Online
Data centers in Urbana, Maryland
- FANNIE MAE DATA CENTER 8731 FINGERBOARD RD Mailing address: Frederick
- FANNIE MAE UTC DATA CENTER 9107 BENNETT CREEK BLVD Mailing address: Frederick
Data centers in Annapolis, Maryland
- ANNAPOLIS DATA CENTER 108 CARROLL DR
Data centers in Annapolis JCT, Maryland
- Verizon Wireless data center Verizon Wireless
Data centers in Ballenger Creek, Maryland
- Data center building
Data centers in Beltsville, Maryland
- BLTV.CO1/BGENMD Verizon Wireless 7020 Virginia Manor, Beltsville
Data centers in Bethesda, Maryland
- Fox Television Stations LLC 7272 Wisconsin Avenue
Data centers in Dickerson, Maryland
- Atmosphere Dickerson, MD Data Center Atmosphere Data Centers 360 MW
Data centers in Elkridge, Maryland
- Cogent Elkridge Cogent 6050 Race Road
Data centers in Greenbelt, Maryland
- NASA Center for Climate Simulation (NCCS) NASA Building 28, Goddard Space Flight Center
Data centers in North Laurel, Maryland
- Data center building 9800 South Eternal Rings Drive Mailing address: Laurel
Data centers in Parole, Maryland
- IBM ANNAPOLIS DATA CENTER 2500 RIVA RD Mailing address: Annapolis
Data centers in Severn, Maryland
- Baltimore-area data center (Severn, Maryland) GI Partners
Data centers in Unincorporated Anne Arundel County, Maryland
- TierPoint Baltimore – BWI TierPoint 813 Pinnacle Drive Mailing address: Linthicum Heights 34,000 sq ft2 networks
- TunBroker Baltimore Tunbroker 813 Pinnacle Dr Mailing address: Linthicum Heights
- TierPoint Baltimore BWI 813 Pinnacle Drive Mailing address: Linthicum Heights
Data centers in Charles County, Maryland (exact location not published)
- Chesapeake Data & Energy TeraWulf 800 MW
Data centers in Unincorporated Baltimore County, Maryland
- Expedient Baltimore - Owings Mills Expedient 11155 Red Run Blvd., Suite 200 Mailing address: Owings Mills 22,000 sq ft0.8 MW1 networks
Data centers in Unincorporated Frederick County, Maryland
- IAD-04 Aligned 5601 Manor Woods Rd Mailing address: Frederick
Data centers in Unincorporated Harford County, Maryland
- PRMNMD Verizon Wireless 2606 Carsins Run Road Mailing address: Aberdeen
Data centers in Unincorporated Howard County, Maryland
- Microsoft Corporation 8201 Dorsey Run Road Mailing address: Annapolis
Data centers in Elsewhere in Maryland
- Bauxite 1, 2, 3 Rowan Green Data 600 MW
- NSA Washington (NSAW)
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 9
Operators 20
Cities 19
The rules and the pipeline in Maryland
Maryland has 2 state measures on record (proposed), 5 local pauses, and 0 state or local water measures. PJM runs the grid there. Each tracker below holds the full record for Maryland, with every entry sourced.
Maryland data centers, answered from the record
How many data centers are in Maryland?
The industry reference count for Maryland is 58 facilities. This map places 48 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 Maryland's data centers?
They are listed on this page city by city. By city: Baltimore (9), Calverton (4), Laurel (3), Rockville (3). By county: Montgomery County (10), Anne Arundel County (9), Baltimore city (9). Every data center identified in Maryland appears under the city or county it stands in, with its operator and the source that names it.
Who operates data centers in Maryland?
20 operators appear in the registers for Maryland. The largest by facility count: AiNET (7), Verizon Wireless (4), Atlantech Online (4), TierPoint (2), GI Partners (2). Interconnection-heavy providers are over-represented because PeeringDB records where networks meet; hyperscalers appear where contributors have mapped their buildings.
Does Maryland have a data center moratorium?
Maryland has 2 state measures on record: SB 596: Demand response and storage for large-load customers (proposed, 2026); HB 120: Moratorium on construction of new data centers (failed, 2026). 5 city or county pauses are on record locally. The Maryland Data Center Moratorium Tracker carries each measure with its primary source and a weekly changelog.
Which grid operator serves Maryland data centers?
PJM runs the wholesale power market and the high-voltage transmission system for all of Maryland. Entire state in PJM (BGE, Pepco, Delmarva, Potomac Edison).
Are new data centers being built or delayed in Maryland?
4 named projects in Maryland are delayed, blocked, or under challenge (820 MW disclosed), with 13 local restrictions, 8 jurisdictional actions, 6 utility dockets, and 5 flagged queue row or large-load studys totaling 1,142 MW. The capital atlas records 0 named sites in Maryland and 1 project blocked, delayed, or halted ($5B 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.
Maryland 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.