{"nrhp_refnum":"05001604","name":"Monmouth Courthouse Commercial Historic District","other_names":[],"category":"district","location":{"address":"Roughly bounded by Archer, Ave., First St., Second Ave. and A St.","address_restricted":false,"city":"Monmouth","county":"Warren County","state":"IL","lat":40.91175548950005,"lon":-90.64828327518879,"geom_source":"nps_gis"},"listed_date":"2006-02-01","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Architecture","Commerce","Politics/Government"],"significance_levels":["local"],"summary":{"what_it_is":"A downtown commercial historic district centered on the Public Square in Monmouth, Warren County, Illinois, containing about 73 resources including commercial blocks, the county courthouse and jail, a city hall, a library and a central park, dating from 1846 to the mid-twentieth century.","why_significant":"The district shows the growth of Monmouth's downtown from its early wood and simple brick buildings through the post-Civil War boom, rebuilding after fires such as the 1871 fire, and the slowdown during the Great Depression. It contains good examples of Italianate, Queen Anne, Romanesque, Commercial Style and Art Moderne architecture. The majority of buildings pre-date 1930.","narrative":"Monmouth's downtown core, arranged around the Public Square in western Illinois, forms a commercial district of about 73 resources. Laid out when the town was platted in 1836, the square holds a circular park, and the district extends along North and South Main Street and South A Street. The oldest surviving building is the 1846 Thompson Block. Fires, especially the 1871 blaze that destroyed the southeast quadrant of the square, led to widespread rebuilding, so many structures show Italianate arched and hooded windows. Other landmarks include the 1895 Richardsonian Romanesque Warren County Courthouse, the 1883 county jail, the three-story Colwell department store of 1904 with its 1911 annex, and the 1935 Art Moderne Maple City Dairy. Most buildings date before 1930, while later construction was smaller in scale after the Depression and the decline of local cigar and farm implement industries. Nine buildings are non-contributing because of recent construction or added false façades. The district shows how a Midwestern county seat grew, burned and recovered.","period_of_significance":null,"architect_builder":"Charles A. Moses (Warren County Courthouse); J. Grant Beadle (E. B. Colwell and Company Department Store); William F. Hayden (Warren County Jail); George Howard (Maple City Dairy)","architectural_style":"Italianate, Queen Anne, Romanesque, Commercial Style, Modern, Art Deco","criteria":[],"status_note":"Most buildings remain in commercial use as shops, restaurants, offices and a theater; nine buildings are non-contributing because of recent construction or false façades. The former City Hall was mostly empty at the time of the form.","vacant_flag":null,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:55:37.769383-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/opastorage/live/45/8942/28894245/content/electronic-records/rg-079/NPS_IL/05001604.pdf"},"photo":{"url_800":"https://nationalhistoricalregister.com/media/05001604/0760b1e0a8-800.webp","url_1600":"https://nationalhistoricalregister.com/media/05001604/0760b1e0a8-1600.webp","licence":"Public domain","author":"Nyttend","credit_html":"Nyttend, Public domain, via Wikimedia Commons","source_page":"https://commons.wikimedia.org/wiki/File:Warren_County_Courthouse_in_Monmouth.jpg"},"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/28894245","wikipedia":"https://en.wikipedia.org/wiki/Monmouth_Courthouse_Commercial_Historic_District","wikidata":"https://www.wikidata.org/wiki/Q24061719"},"indexable":true,"url":"https://nationalhistoricalregister.com/illinois/warren-county/monmouth-courthouse-commercial-historic-district-05001604/"}