| District ID | 18th District |
| Representative | Pat Ryan |
| Party Affiliation | Democrat |
| Partisan Voting Index (PVI) | R+1 |
| 12785 |
| 12780 |
| 12771 |
| 12746 |
| 12729 |
| 12721 |
| 12604 |
| 12603 |
| 12601 |
| 12594 |
| 12592 |
| 12590 |
| 12589 |
| 12586 |
| 12585 |
| 12583 |
| 12581 |
| 12580 |
| 12578 |
| 12577 |
| 12575 |
| 12574 |
| 12572 |
| 12571 |
| 12570 |
| 12569 |
| 12567 |
| 12566 |
| 12564 |
| 12561 |
| 12553 |
| 12550 |
| 12549 |
| 12548 |
| 12547 |
| 12546 |
| 12545 |
| 12543 |
| 12542 |
| 12540 |
| 12538 |
| 12533 |
| 12528 |
| 12525 |
| 12524 |
| 12522 |
| 12520 |
| 12518 |
| 12515 |
| 12514 |
| 12512 |
| 12508 |
| 12507 |
| 12504 |
| 12501 |
| 12493 |
| 12491 |
| 12489 |
| 12487 |
| 12486 |
| 12484 |
| 12472 |
| 12466 |
| 12461 |
| 12458 |
| 12446 |
| 12443 |
| 12440 |
| 12429 |
| 12428 |
| 12419 |
| 12417 |
| 12411 |
| 12404 |
| 12401 |
| 10998 |
| 10996 |
| 10992 |
| 10990 |
| 10988 |
| 10987 |
| 10985 |
| 10979 |
| 10975 |
| 10973 |
| 10969 |
| 10963 |
| 10958 |
| 10953 |
| 10950 |
| 10941 |
| 10940 |
| 10933 |
| 10930 |
| 10928 |
| 10926 |
| 10925 |
| 10924 |
| 10922 |
| 10921 |
| 10919 |
| 10918 |
| 10917 |
| 10916 |
| 10914 |
| 10910 |