OH ยท updated 2026-07-29
Ohio property data
6,048,590 properties mapped across 88 Ohio counties, 212,252 of them carrying linked permit, violation, sale, or event records. These are the live map's own counts, not estimates. Statewide permit totals by jurisdiction are on the coverage page.
Counties
| County | Properties | With records | Linked share | Tier |
|---|---|---|---|---|
| Franklin | 448,719 | 92,918 | 21% | Active |
| Hamilton | 352,500 | 5 | 0.0% | Parcel-first |
| Cuyahoga | 324,249 | 85,759 | 26% | Active |
| Montgomery | 272,289 | 0 | 0.0% | Parcel-only |
| Summit | 261,941 | 0 | 0.0% | Parcel-only |
| Lucas | 204,331 | 0 | 0.0% | Parcel-only |
| Stark | 201,100 | 0 | 0.0% | Parcel-only |
| Lorain | 168,845 | 0 | 0.0% | Parcel-only |
| Butler | 165,812 | 105 | 0.1% | Parcel-first |
| Mahoning | 158,928 | 53 | 0.0% | Parcel-first |
| Trumbull | 133,428 | 4 | 0.0% | Parcel-first |
| Lake | 112,386 | 10 | 0.0% | Parcel-first |
| Warren | 106,093 | 0 | 0.0% | Parcel-only |
| Clermont | 96,425 | 8 | 0.0% | Parcel-first |
| Delaware | 94,350 | 0 | 0.0% | Parcel-only |
| Licking | 79,470 | 0 | 0.0% | Parcel-only |
| Medina | 76,411 | 0 | 0.0% | Parcel-only |
| Greene | 76,206 | 8 | 0.0% | Parcel-first |
| Ashtabula | 73,739 | 18 | 0.0% | Parcel-first |
| Columbiana | 73,526 | 10 | 0.0% | Parcel-first |
| Richland | 72,052 | 0 | 0.0% | Parcel-only |
| Fairfield | 72,011 | 119 | 0.2% | Parcel-first |
| Wood | 70,649 | 16 | 0.0% | Parcel-first |
| Portage | 67,744 | 0 | 0.0% | Parcel-only |
| Clark | 66,193 | 0 | 0.0% | Parcel-only |
| Tuscarawas | 59,863 | 7 | 0.0% | Parcel-first |
| Belmont | 58,443 | 7 | 0.0% | Parcel-first |
| Washington | 57,643 | 2 | 0.0% | Parcel-first |
| Muskingum | 57,181 | 0 | 0.0% | Parcel-only |
| Wayne | 56,804 | 0 | 0.0% | Parcel-only |
| Scioto | 55,934 | 19 | 0.0% | Parcel-first |
| Jefferson | 55,444 | 0 | 0.0% | Parcel-only |
| Miami | 52,866 | 10 | 0.0% | Parcel-first |
| Allen | 52,684 | 0 | 0.0% | Parcel-only |
| Lawrence | 51,754 | 4 | 0.0% | Parcel-first |
| Geauga | 50,768 | 9 | 0.0% | Parcel-first |
| Erie | 45,853 | 0 | 0.0% | Parcel-only |
| Ross | 42,104 | 1 | 0.0% | Parcel-first |
| Knox | 41,756 | 2 | 0.0% | Parcel-first |
| Athens | 40,475 | 10 | 0.0% | Parcel-first |
| Guernsey | 39,763 | 0 | 0.0% | Parcel-only |
| Huron | 39,021 | 0 | 0.0% | Parcel-only |
| Hancock | 37,413 | 0 | 0.0% | Parcel-only |
| Logan | 36,300 | 3 | 0.0% | Parcel-first |
| Ottawa | 34,519 | 0 | 0.0% | Parcel-only |
| Marion | 34,349 | 15 | 0.0% | Parcel-first |
| Brown | 33,748 | 0 | 0.0% | Parcel-only |
| Crawford | 33,639 | 2 | 0.0% | Parcel-first |
| Seneca | 33,192 | 9 | 0.0% | Parcel-first |
| Union | 33,107 | 0 | 0.0% | Parcel-only |
| Sandusky | 32,887 | 9 | 0.0% | Parcel-first |
| Highland | 31,959 | 17 | 0.1% | Parcel-first |
| Shelby | 31,382 | 3 | 0.0% | Parcel-first |
| Ashland | 31,361 | 3 | 0.0% | Parcel-first |
| Darke | 30,945 | 13 | 0.0% | Parcel-first |
| Putnam | 30,160 | 0 | 0.0% | Parcel-only |
| Meigs | 29,729 | 0 | 0.0% | Parcel-only |
| Pickaway | 28,868 | 4 | 0.0% | Parcel-first |
| Auglaize | 28,713 | 3 | 0.0% | Parcel-first |
| Holmes | 28,232 | 0 | 0.0% | Parcel-only |
| Carroll | 27,943 | 1 | 0.0% | Parcel-first |
| Coshocton | 26,996 | 2 | 0.0% | Parcel-first |
| Morrow | 26,558 | 5 | 0.0% | Parcel-first |
| Jackson | 26,514 | 7 | 0.0% | Parcel-first |
| Gallia | 26,317 | 1 | 0.0% | Parcel-first |
| Defiance | 26,029 | 1 | 0.0% | Parcel-first |
| Hardin | 25,979 | 0 | 0.0% | Parcel-only |
| Clinton | 25,863 | 3 | 0.0% | Parcel-first |
| Champaign | 25,698 | 5 | 0.0% | Parcel-first |
| Williams | 25,442 | 5 | 0.0% | Parcel-first |
| Mercer | 25,303 | 12 | 0.0% | Parcel-first |
| Perry | 25,211 | 1 | 0.0% | Parcel-first |
| Pike | 23,599 | 0 | 0.0% | Parcel-only |
| Fulton | 23,338 | 0 | 0.0% | Parcel-only |
| Adams | 21,521 | 2 | 0.0% | Parcel-first |
| Madison | 21,270 | 2 | 0.0% | Parcel-first |
| Preble | 20,480 | 5 | 0.0% | Parcel-first |
| Hocking | 20,374 | 0 | 0.0% | Parcel-only |
| Wyandot | 20,045 | 3 | 0.0% | Parcel-first |
| Van Wert | 19,647 | 3 | 0.0% | Parcel-first |
| Henry | 19,594 | 2 | 0.0% | Parcel-first |
| Morgan | 18,972 | 0 | 0.0% | Parcel-only |
| Paulding | 17,678 | 0 | 0.0% | Parcel-only |
| Harrison | 17,628 | 3 | 0.0% | Parcel-first |
| Fayette | 17,099 | 2 | 0.0% | Parcel-first |
| Monroe | 17,058 | 1 | 0.0% | Parcel-first |
| Noble | 16,314 | 0 | 0.0% | Parcel-only |
| Vinton | 12,329 | 0 | 0.0% | Parcel-only |
What is in the Ohio data
Every property above sits on the owned parcel layer (92M parcels nationally) and is joined to whichever record classes exist for its jurisdiction: building permits, code violations, complaints, deeds and sales, assessments, and certificates of occupancy. Per-county parcel-match rates are published openly on the data quality page.
Building permits ยท 47.1M+Parcels ยท 92MCode violations ยท 22.9MComplaints & 311 ยท 25.1MDeeds & sales ยท 33.4MAssessments ยท 85MCertificates of occupancy ยท 1.6MContractors ยท 3.3MHearings & penalties ยท 13.1MGovernment decisions ยท 2.37M
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