Zoning in Darke County, Ohio: The Three-Way Township Split, and a New Data Center Ordinance in Progress

Nine townships under the county, five running their own, six with none

Under ORC Chapter 303, the Darke County Planning & Zoning Department directly administers zoning in 9 of the county's 20 townships: Adams, Brown, Butler, Harrison, Jackson, Liberty, Neave, Wabash, and Wayne, along with the Village of Wayne Lakes. A separate 5 townships have gone the other direction and adopted their own independent zoning under ORC Chapter 519, administering it through their own township zoning inspector rather than the county: Franklin, Greenville, Monroe, Twin, and Van Buren. The remaining 6 -- Allen, Mississinawa, Patterson, Richland, Washington, and York -- have adopted no zoning at all; the township trustees in those townships approve building sites and issue building-permit sign-offs directly, without a zoning code to apply.

That 9-plus-5-plus-6 breakdown accounts for all 20 of the county's townships, and it isn't a snapshot frozen in time: Greenville Township, one of the five self-zoned townships, replaced its own zoning resolution outright, with a new version taking effect December 12, 2025 in place of one that had governed since 2008. A buyer should treat this as confirmation that even a self-zoned township's rules can change meaningfully, and should always pull the current version rather than relying on an older copy found online.

Why this matters more here than in a single-regime county

In a county with one uniform zoning authority, a buyer generally knows which office to call regardless of location. In Darke County, the correct office depends entirely on which of the 20 townships a parcel sits in -- and getting it wrong means asking the wrong department for a variance, a home-occupation approval, or a setback confirmation. The Darke County Zoning Inspector, (937) 547-7381, is the practical first call for any parcel in a county-administered township and can also field basic questions for the six unzoned townships; a parcel in one of the five self-zoned townships needs to go to that specific township's own zoning inspector instead.

A data-center zoning amendment was being drafted as of mid-2026

For the townships the county itself administers, the Darke County Commissioners authorized initiating an amendment to the Darke County Zoning Resolution to add a definition of data centers and data-center-specific regulations -- an authorization approved at the commissioners' Aug. 13, 2026 regular session, per Daily Advocate reporting. This research pass did not find a specific, named data-center project proposed within Darke County tied to that move; it reads as a preemptive step consistent with a wider pattern of west-central and rural Ohio counties updating zoning ahead of anticipated data-center interest, rather than a reaction to a pending application already in front of the county.

Because the amendment was only authorized for drafting as of this review -- not necessarily finally adopted -- a buyer or landowner in one of the nine county-administered townships who is evaluating a large-acreage industrial proposal, or fielding an approach about leasing land for one, should get the current, final text of the ordinance directly from the Planning & Zoning Department rather than assuming any specific setback or use restriction described elsewhere still matches what the county ultimately adopts.

Utility-scale solar: limited local control, and one shelved local example

Darke County residents organized against Apex Clean Energy's proposed Painter Creek Solar project earlier in the decade, forming the Darke County Concerned Property Owners Association and pointing out a structural limit on local control: a large solar array counts as a state-regulated "major utility facility" under ORC 4906.01, reviewed by the Ohio Power Siting Board rather than county or township zoning. That means neither the county's nine-township zoning authority nor a self-zoned township's own rules necessarily have the final say over a utility-scale renewable project the way they would over an ordinary subdivision or accessory structure. Painter Creek Solar itself subsequently ran into grid-interconnection-queue delays and is tracked by at least one industry database as a shelved project, with no confirmed active construction found in this research pass -- worth knowing as regional context on how these projects are actually sited in Ohio, even though it is not a currently-progressing project in the county today.