Quick check: the 9 active-project counties
If you live in one of these counties, there is a named, public hyperscale data-center project in your area. Click your county for the full report — project specs, timeline, residents organizing, what to do.
- Butler County (Trenton) — Project Mila, 141-acre / 250 MW Prologis campus, approved March 30, 2026 in a 10-minute Planning Commission meeting. W.A.T.E.R. opposition group active.
- Miami County (Piqua) — Project Klondike, $1B / 607-acre J5 LLC campus, approved November 2025 under city NDA. Hunterbrook traced J5 to Meta's Menlo Park HQ.
- Brown County (Mt. Orab) — DB Stu LLC mega-site, 1,000+ acres, all village officials signed NDAs. Triggered Ohio HB 695. Ballot amendment co-organizing county.
- Trumbull County (Lordstown) — Bristolville 25, $3.6B / 1.65M sq ft on former GM site. Ohio Supreme Court mandamus litigation pending. Adjacent to OpenAI Stargate.
- Portage County (Ravenna) — Ray Harner SR-14 site across from UH Portage Medical Center. 12-month moratorium adopted April 20, 2026 after Will Hollingsworth's viral speech.
- Licking County (New Albany / Heath / Hebron / Johnstown) — Microsoft, Meta, Google, Amazon, QTS, Cologix. Ohio's data-center capital, with $1B Microsoft and $7B Cologix Johnstown commitments active.
- Shelby County (Sidney) — Project Galaxy, $3B Amazon AWS, 30-year 100% tax abatement. Sidney Citizens for Responsible Development active.
- Franklin County (Hilliard) — Amazon Cosgray Road campus + 73-MW / 228-fuel-cell Bloom Energy array. 1.45M lbs CO2/day permitted. City of Hilliard sued Ohio EPA. Annie Cannelongo and Annette Singh leading opposition.
Other counties with quiet-review parcels
The following counties have land assemblage, NDA-shielded developer activity, or specific parcels under review where a public proposal has not yet been filed. If you live in one of these counties, watch your local council and county commissioner agendas closely:
- Adams County — ORRD ballot-amendment co-organizing county (Nikki Gerber); strong rural opposition.
- Clermont County — ORRD organizers (Andrew Gula, Jessica Baker); cross-partisan organizing.
- Clinton County (Wilmington) — Amazon proposal; described in Tribune Chronicle as “very Republican region marked by modest incomes” targeted by tech.
- Cuyahoga County (Cleveland) — Cleveland City Council Google deal under NDA.
- Delaware County — Adjacent to New Albany / Licking cluster; rapid suburban growth.
- Fayette County — Amazon campus announced.
- Hamilton County (Cincinnati) — Hamilton data-center proposal; Cincinnati hosts 26 existing data centers.
- Madison County — Adjacent to Franklin/Licking cluster.
- Mahoning County — Bristolville 25 site partly in Mahoning (Lordstown adjacency).
- Pike County (Piketon) — Google data center; Scioto-area NDA scandal adjacency.
- Preble County — Active resident pushback; west-Ohio cluster pressure.
- Scioto County — Google deal with NDA-signed commissioners.
- Stark County — Perry Township and Canton data-center proposals.
- Summit County — Akron cryptocurrency mining; data-center pressure.
- Union County (Marysville / Jerome Township) — Two Amazon facilities operating; Jerome Township passed moratorium expiring January 2026.
- Warren County — Adjacent to Butler/Trenton; affected Madison Township and MetroParks.
How to check your specific address
Three reliable methods:
- The interactive risk map on this site's homepage. All 88 Ohio counties are shaded by data-center development risk based on power infrastructure, water capacity, land availability, and current exposure to known projects. Click your county to see its risk score and read the full report.
- Your county auditor's parcel-search tool. Most Ohio counties offer free online parcel searches. Look for large industrial-zoned parcels (typically 100+ acres) recently sold or transferred to LLCs with non-local addresses. Common shell-LLC patterns: Delaware, Nevada, or Wyoming registration. Hunterbrook investigators traced J5 LLC to Meta this way.
- Your local council and county commissioner meeting agendas. Many Ohio counties post agendas online 7–14 days in advance of meetings. Look for: zoning amendments, Community Reinvestment Area resolutions, emergency ordinances, large-acreage industrial-development agreements, or any reference to “NDA” or “non-disclosure agreement.”
Signs a data center may be coming to your area
Based on documented Ohio cases, the early indicators that a hyperscale developer is targeting your area:
- Large parcels listed as “unavailable” or going under contract without public listings.
- LLCs with out-of-state addresses appearing on county auditor parcel transfers.
- Local elected officials becoming evasive on questions about industrial development.
- Emergency ordinances rewriting zoning code, particularly for industrial districts.
- Community Reinvestment Area (CRA) resolutions being filed without specific named projects attached.
- Utility infrastructure surveys — AEP Ohio, Duke Energy Ohio, AES Ohio, FirstEnergy walking distribution lines or surveying for substation expansion.
- Heavy water-system upgrades in cities that don't have growing residential demand.
What to do if you find a project near you
Three actions, in order:
- Get on the local notification list. Most Ohio cities and counties publish public-notice lists for zoning hearings; sign up. Ohio EPA also publishes air, water, and waste permit notices.
- Document baseline conditions. If a project is announced near you, immediately document: ambient noise (calibrated meter), well-water test if private well, indoor air quality if you have respiratory concerns, current property value (recent comparable sales). These create a record for future challenges.
- Connect with the regional opposition network. The Coalition Against Data Centers in South Ohio Facebook group (admin: Jay Kidd) is the largest cross-county organizing channel. Individual counties have local groups: W.A.T.E.R. (Trenton), Sidney Citizens for Responsible Development (Allen), Rise Up Hilliard (Cannelongo and Singh).
The constitutional amendment is the most aggressive option
The Ohio Constitutional Amendment to ban data centers above 25 megawatts is in active signature collection. Volunteers from Ohio Residents for Responsible Development need 413,488 valid signatures from at least half of Ohio's 88 counties by July 1, 2026. Find a signing event in your county at conserveohio.com.
Common questions.
How do I find out if a data center is being proposed near my home?
Three methods: (1) the interactive risk map on this site's homepage shows all 88 Ohio counties shaded by risk; (2) check your county auditor's parcel-search tool for recent large industrial-zoned parcel transfers to out-of-state LLCs; (3) review your local council and county commissioner meeting agendas for emergency ordinances, CRA resolutions, or large-acreage development agreements.
Which Ohio counties have active data center projects right now?
Nine counties have named, active hyperscale projects as of April 2026: Butler (Project Mila), Miami (Project Klondike / Meta), Brown (DB Stu mega-site), Trumbull (Bristolville 25), Portage (Harner SR-14), Licking (Microsoft + Meta + Google + Amazon + QTS + Cologix), Shelby (Project Galaxy / Amazon), Franklin (Cosgray fuel cells), and Pike (PORTS Technology Campus).
What are the warning signs a data center may be coming?
Large parcels listed as unavailable or going under contract quietly; LLCs with out-of-state addresses on parcel transfers; local officials becoming evasive on industrial development; emergency zoning ordinances; CRA resolutions without named projects; AEP/Duke/AES/FirstEnergy surveying for substation expansion; heavy water-system upgrades in cities without residential growth.
Where can I find petition signing events near me?
conserveohio.com/where-can-i-go-to-sign lists events by county. The deadline for the 2026 ballot amendment is July 1, 2026 for 413,488 valid signatures from at least half of Ohio's 88 counties.
Are there Facebook groups or other organizing channels?
Yes. Coalition Against Data Centers in South Ohio (admin: Jay Kidd) is the largest cross-county group on Facebook. County-specific groups include W.A.T.E.R. (Trenton), Sidney Citizens for Responsible Development, Sidney Citizens Data Center Watch, Rise Up Hilliard, and Portage Residents for Responsible Development.
Reporting we relied on.
- Ohio Capital Journal — Ohio Residents for Responsible Development organizing detail
- Statehouse News Bureau / WOSU / WYSO — February 2026 Ohio data center moratorium roundup
- Coalition Against Data Centers in South Ohio — Facebook group (admin: Jay Kidd)
- Conserve Ohio — conserveohio.com / petition signing event directory
- Ohio Secretary of State — LLC corporate filings and CRA agreement records
- Ohio EPA — Public notice listings for air, water, and waste permits
- Ballotpedia — Ohio Prohibition of Construction of a Data Center Amendment (2026)
Other reporting on Ohio data centers.
- Data center water usage in Ohio — aquifer impact, OEPA NPDES rules, Marysville case
- Data centers and your Ohio electric bill — AEP’s 85% tariff, PJM capacity, BTCR riders
- Data center noise in Ohio — cooling-tower hum, generator testing, decibel limits
- Data centers and your property value — what GMU’s study found, what Mansfield residents say
- Data center health risks in Ohio — diesel emissions, fuel cells, air quality
Volunteers from Ohio Residents for Responsible Development need 413,488 valid signatures from at least half of Ohio’s 88 counties by July 1, 2026. Coordination is run by Conserve Ohio.
One email when filings, votes, tax deals, or ballot deadlines hit your county. Tracking all 88 Ohio counties from public records and local reporting.