# National Register of Historic Places listings in Butler County, Pennsylvania

This is a list of the National Register of Historic Places listings in Butler County, Pennsylvania.
This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Butler County, Pennsylvania, United States. The locations of National Register properties and districts for which the latitude and longitude coordinates are included below, may be seen in a map.
There are 13 properties and districts listed on the National Register in the county. One site is further designated as a National Historic Landmark District.
This National Park Service list is complete through NPS recent listings posted February 28, 2025.
Download coordinates as:
* KML
* GPX (all coordinates)
* GPX (primary coordinates)
* GPX (secondary coordinates)

## Current listings

| | Name on the Register | Image | Date listed | Location | City or town | Description |
| 1 | Butler Armory | Butler Armory | July 12, 1991 (#91000903) | 216 North Washington Street 40°51′47″N 79°53′50″W﻿ / ﻿40.863056°N 79.897222°W﻿ / 40.863056; -79.897222﻿ (Butler Armory) | Butler | |
| 2 | Butler County Courthouse | Butler County Courthouse More images | September 15, 1977 (#77001132) | South Main and Diamond Streets 40°51′30″N 79°53′46″W﻿ / ﻿40.858333°N 79.896111°W﻿ / 40.858333; -79.896111﻿ (Butler County Courthouse) | Butler | |
| 3 | Butler County National Bank | Butler County National Bank | November 7, 1995 (#95001251) | 302 South Main Street 40°51′29″N 79°53′43″W﻿ / ﻿40.858056°N 79.895278°W﻿ / 40.858056; -79.895278﻿ (Butler County National Bank) | Butler | |
| 4 | Butler Historic District | Butler Historic District More images | May 29, 2003 (#03000490) | Roughly bounded by North Church Street, Walnut Street, Franklin Street, and Wayne Street 40°51′39″N 79°53′40″W﻿ / ﻿40.860833°N 79.894444°W﻿ / 40.860833; -79.894444﻿ (Butler Historic District) | Butler | |
| 5 | Butler Veterans Administration Hospital Historic District | Upload image | May 27, 2022 (#100007743) | 325 New Castle Rd. 40°52′29″N 79°56′39″W﻿ / ﻿40.8746°N 79.9443°W﻿ / 40.8746; -79.9443﻿ (Butler Veterans Administration Hospital Historic District) | Butler Township | |
| 6 | Elm Court | Elm Court | December 6, 1979 (#79002176) | Between Polk and Elm Streets 40°52′07″N 79°53′31″W﻿ / ﻿40.868611°N 79.891944°W﻿ / 40.868611; -79.891944﻿ (Elm Court) | Butler | |
| 7 | Harmony Historic District | Harmony Historic District More images | March 21, 1973 (#73002139) | Pennsylvania Route 68 40°48′11″N 80°07′42″W﻿ / ﻿40.803056°N 80.128333°W﻿ / 40.803056; -80.128333﻿ (Harmony Historic District) | Harmony | |
| 8 | Harmony Mennonite Meetinghouse and Cemetery | Harmony Mennonite Meetinghouse and Cemetery | October 4, 2016 (#16000697) | 114 Wise Rd. 40°48′33″N 80°07′41″W﻿ / ﻿40.809179°N 80.128100°W﻿ / 40.809179; -80.128100﻿ (Harmony Mennonite Meetinghouse and Cemetery) | Jackson Township | |
| 9 | Sen. Walter Lowrie House | Sen. Walter Lowrie House | May 1, 1979 (#79002177) | West Diamond and South Jackson Streets 40°51′30″N 79°53′47″W﻿ / ﻿40.858333°N 79.896389°W﻿ / 40.858333; -79.896389﻿ (Sen. Walter Lowrie House) | Butler | |
| 10 | Passavant House | Passavant House | April 11, 1977 (#77001133) | 243 South Main Street 40°47′35″N 80°08′13″W﻿ / ﻿40.793056°N 80.136944°W﻿ / 40.793056; -80.136944﻿ (Passavant House) | Zelienople | |
| 11 | Preston Laboratories | Preston Laboratories | December 26, 2012 (#12001095) | 415 S. Eberhart Road, west of Butler 40°51′12″N 79°57′00″W﻿ / ﻿40.853333°N 79.950000°W﻿ / 40.853333; -79.950000﻿ (Preston Laboratories) | Butler Township | Site plan |
| 12 | John Roebling House | John Roebling House | November 13, 1976 (#76001610) | Roebling Park, along Rebecca Street 40°45′03″N 79°48′39″W﻿ / ﻿40.750833°N 79.810833°W﻿ / 40.750833; -79.810833﻿ (John Roebling House) | Saxonburg | Home of John Roebling |
| 13 | Saxonburg Historic District | Saxonburg Historic District More images | February 14, 2003 (#03000035) | Portions of East and West Main, North and South Rebecca, North and South Isabella, Pittsburgh, Butler, and State Streets 40°45′00″N 79°49′08″W﻿ / ﻿40.75°N 79.818889°W﻿ / 40.75; -79.818889﻿ (Saxonburg Historic District) | Saxonburg | |