{"nrhp_refnum":"87000469","name":"North Hill Historic District","other_names":[],"category":"district","location":{"address":"Bounded by Logan, George, Western, and Alley W of Logan Ave.","address_restricted":false,"city":"Mingo Junction","county":"Jefferson County","state":"OH","lat":40.32649041950003,"lon":-80.61008625293948,"geom_source":"nps_gis"},"listed_date":"1987-03-17","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A residential historic district of about 4 acres in Mingo Junction, Jefferson County, Ohio, made up of 33 brick single-family and four-family houses platted by the Carnegie Steel Co. in 1918 as the \"North Hill Addition.\"","why_significant":"It is argued to be significant for its architectural integrity and for its link to the Mingo Junction steel industry, as the city's only planned residential neighborhood of mill company housing. Its layout, brick construction, and uniform scale, setback and materials set it apart from other neighborhoods in the city.","narrative":"North Hill is a compact residential neighborhood in Mingo Junction, Ohio, laid out by the Carnegie Steel Co. in 1918 as the North Hill Addition. Its 33 brick buildings include single-family houses, reserved for factory supervisors, and four-family apartment buildings occupied by steel workers. The company planned the area to give employees good housing in a pleasant setting, placed away from industry and commercial development though not far from the mill. No other neighborhood in the city shows the same level of planning, quality, integrity or uniformity. The houses vary in design but share hip or gable roofs, overhanging eaves, front porches, brackets, dormers and shaped windows in different combinations. Consistent scale, setback and materials give the district a distinctive look that survives today. Carnegie Steel kept ownership of the buildings until the mid-1940s, when the plant was sold to Wheeling Steel Co., which began selling off individual parcels. The district is valued as the city's only planned mill housing neighborhood.","period_of_significance":null,"architect_builder":"Carnegie Steel Co. (platted the addition)","architectural_style":null,"criteria":[],"status_note":"The document says the district's visual character has been preserved to the present day, with a high degree of architectural integrity.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:53:14.665523-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_OH/87000469.pdf"},"photo":null,"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71985523","wikipedia":null,"wikidata":null},"indexable":true,"url":"https://nationalhistoricalregister.com/ohio/jefferson-county/north-hill-historic-district-87000469/"}