Below are the polling locations in the 18th Congressional District for the June 2 primary.
| Municipality | Location | Address | City | Zip Code |
| Baldwin Boro | Baldwin Borough Building | 3344 Churchview Avenue | Pittsburgh | 15227 |
| Bethel Park | Bethel Park High School | 309 Church Road | Bethel Park | 15102 |
| Braddock | New Hope Baptist Church Multi-Use Room | 445 Sixth Street | Braddock | 15104 |
| Braddock Hills | Braddock Hills Senior Center Community Room | 3000 Locust Street | Pittsburgh | 15221 |
| Brentwood | Brentwood Library | 3501 Brownsville Road | Pittsburgh | 15227 |
| Bridgeville | Bridgeville Volunteer Fire Department | 370 Commercial Drive | Bridgeville | 15017 |
| Chalfant | Chalfant Municipal Building | 144 Lynnwood Avenue | East Pittsburgh | 15112 |
| Churchill | St John Fisher Parish | 33 Lewin Lane | Pittsburgh | 15235 |
| Clairton | Clairton Municipal Building | 551 Ravensburg Boulevard | Clairton | 15025 |
| Dravosburg | Dravosburg Municipal Building | 226 Maple Avenue | Dravosburg | 15034 |
| Duquesne | Holy Name/Christ the Light of the World | 32 South 1st Street | Duquesne | 15110 |
| East McKeesport | East McKeesport Senior Citizen Community Center | 539 Chicora Street | East McKeesport | 15035 |
| East Pittsburgh | East Pittsburgh Community Center Gym | 700 Grandview Avenue | East Pittsburgh | 15112 |
| Edgewood | Edgewood Primary School | 241 Maple Avenue | Pittsburgh | 15218 |
| Elizabeth Boro | Elizabeth Borough Volunteer Fire Department Social Hall | 107 Market Street | Elizabeth | 15037 |
| Elizabeth Twp | Elizabeth Township Municipal Building | 522 Rock Run Road | Elizabeth | 15037 |
| Forest Hills | Forest Hills Westinghouse Lodge | 799 Barclay Avenue | Pittsburgh | 15221 |
| Forward | Forward Township Volunteer Fire Department | 9019 Roberts Hollow Road | Elizabeth | 15037 |
| Glassport | Club 22 Banquet Hall | 528 Monongahela Avenue | Glassport | 15045 |
| Homestead | TCV Community Services - Steel Valley COG | 201 East 18th Avenue | Homestead | 15120 |
| Jefferson Hills | Floreffe Volunteer Fire Company | 1540 State Street | Clairton | 15025 |
| Liberty | Liberty Municipal Building | 2921 Liberty Way | McKeesport | 15133 |
| Lincoln | Lincoln Borough Volunteer Fire Department #1 | 4312 Liberty Way | Elizabeth | 15037 |
| McKeesport | McKeesport Public Safety Building | 201 Lysle Boulevard | McKeesport | 15132 |
| Monroeville | Monroeville Convention Center (DoubleTree) | 101 Mall Boulevard | Monroeville | 15146 |
| Mt. Oliver | Pittsburgh Christian Fellowship | 407 Brownsville Road | Pittsburgh | 15210 |
| Munhall | Munhall #5 Volunteer Fire Department | 1817 Whitaker Way | Homestead | 15120 |
| North Braddock | North Braddock Municipal Building | 600 Anderson Street | Braddock | 15104 |
| North Versailles | North Versailles Community Center | 1401 Greensburg Avenue | North Versailles | 15137 |
| Penn Hills | Penn Hills Library | 1037 Stotler Road | Pittsburgh | 15235 |
| Pitcairn | Pitcairn Borough Park Building | 557 Broadway Boulevard | Pitcairn | 15140 |
| Pittsburgh - Ward 1, 2, and 3 | Ebeneezer Baptist Church | 2001 Wylie Avenue | Pittsburgh | 15219 |
| Pittsburgh - Ward 10 | Pittsburgh Sunnyside School | 4801 Stanton Avenue | Pittsburgh | 15201 |
| Pittsburgh - Ward 11 | Pittsburgh Fulton School | 5799 Hampton Street | Pittsburgh | 15206 |
| Pittsburgh - Ward 12 | Kingsley Association | 6435 Frankstown Avenue | Pittsburgh | 15206 |
| Pittsburgh - Ward 13 | Helen S. Faison Arts Academy | 7430 Tioga Street | Pittsburgh | 15208 |
| Pittsburgh - Ward 14 and 15 | Taylor Allderdice High School | 2409 Shady Avenue | Pittsburgh | 15217 |
| Pittsburgh - Ward 16 and 17 | South Side Market House | 202 Bedford Square | Pittsburgh | 15203 |
| Pittsburgh - Ward 18, 29, 30, and 32 | Carrick High School | 125 Parkfield Street | Pittsburgh | 15210 |
| Pittsburgh - Ward 19 | Brashear High School | 590 Crane Avenue | Pittsburgh | 15216 |
| Pittsburgh - Ward 20 and 28 | Langley High School | 2940 Sheraden Boulevard | Pittsburgh | 15204 |
| Pittsburgh - Ward 21 and 22 | Pittsburgh Manchester | 1612 Manhattan Street | Pittsburgh | 15233 |
| Pittsburgh - Ward 23, 24, 25, 26, and 27 | Perry Traditional Academy | 3875 Perrysville Avenue | Pittsburgh | 15214 |
| Pittsburgh - Ward 31 | Pittsburgh Mifflin Elementary School | 1290 Mifflin Road | Pittsburgh | 15207 |
| Pittsburgh - Ward 4 | Wesley W. Posvar Hall | 230 South Bouquet Street | Pittsburgh | 15213 |
| Pittsburgh - Ward 5 | Pittsburgh Weil School | 2250 Centre Avenue | Pittsburgh | 15219 |
| Pittsburgh - Ward 6 and 9 | Teamsters Temple Banquet Hall | 4701 Butler Street | Pittsburgh | 15201 |
| Pittsburgh - Ward 7 | Rodef Shalom Congregation | 4905 Fifth Avenue | Pittsburgh | 15213 |
| Pittsburgh - Ward 8 | Bloomfield-Garfield Corporation Activity Center | 113 North Pacific Avenue | Pittsburgh | 15224 |
| Pleasant Hills | Pleasant Hills Community Presbyterian Church | 199 Old Clairton Road | Pittsburgh | 15236 |
| Plum | Plum Senior High School | 900 Elicker Road | Pittsburgh | 15239 |
| Port Vue | South Allegheny Middle School | 2743 Washington Boulevard | McKeesport | 15133 |
| Rankin | Rankin Municipal Building | 320 Hawkins Avenue | Braddock | 15104 |
| South Fayette | South Fayette High School | 3640 Old Oakdale Road | McDonald | 15057 |
| South Park | Broughton Volunteer Fire Department | 1030 Cochrans Mill Road | Pittsburgh | 15236 |
| South Versailles | Coulter Volunteer Fire & Rescue | 414 Railroad Street | Coulter | 15028 |
| Swissvale | Woodland Hills Intermediate School | 7600 Evans Street | Pittsburgh | 15218 |
| Trafford | Student Transportation America | 553-599 5th Street Extension | Trafford | 15085 |
| Turtle Creek | Turtle Creek Elementary STEAM Academy | 126 Monroeville Avenue | Turtle Creek | 15145 |
| Upper St. Clair | Boyce Middle School | 1500 Boyce Road | Pittsburgh | 15241 |
| Versailles | Park Baptist Church | 749 Center Street | McKeesport | 15132 |
| Wall | Wall Municipal Building | 413 Wall Avenue | Wilmerding | 15148 |
| West Elizabeth | West Elizabeth Municipal Building | 800 Fifth Street | Elizabeth | 15088 |
| West Homestead | West Homestead Volunteer Fire Department | 447 West 8th Avenue | Homestead | 15120 |
| West Mifflin | West Mifflin Area Middle School | 81 Commonwealth Avenue | West Mifflin | 15122 |
| White Oak | White Oak Community Center/Athletic Association | 1796 Lower Heckman Road | McKeesport | 15131 |
| Whitehall | Baldwin High School | 4653 Clairton Boulevard | Pittsburgh | 15236 |
| Wilkins | Wilkins Municipal Building | 110 Peffer Road | Turtle Creek | 15145 |
| Wilkinsburg | Wilkinsburg Municipal Building | 605 Ross Avenue | Pittsburgh | 15221 |
| Wilmerding | Wilmerding Community Center | One Memorial Field | Wilmerding | 15148 |