# Category:National Register of Historic Places in Mercer County, Illinois

> Wikimedia category

**Wikidata**: [Q25109817](https://www.wikidata.org/wiki/Q25109817)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Category:National_Register_of_Historic_Places_in_Mercer_County,_Illinois)  
**Source**: https://4ort.xyz/entity/category-national-register-of-historic-places-in-mercer-county-illinois