OSM tag name=Lake County Courthouse matches Lake County Courthouse in these Wikidata fields:
| Clock towers in Indiana | man_made=water_tower, building=tower, man_made=tower |
| County courthouses in Indiana | amenity=courthouse |
| Courthouses on the National Register of Historic Places in Indiana | amenity=courthouse, boundary=protected_area, historic |
| Former courthouses in the United States | amenity=courthouse |
| Government buildings completed in 1880 | building=civic, amenity=public_building, building=public, building=public_building, office=government |
| National Register of Historic Places in Lake County, Indiana | boundary=protected_area, historic |