| 2000 Census: Summary of Race and Hispanic or Latino Origin | |||||||||||
| Race | |||||||||||
| One Race | |||||||||||
| Geographic Area | Total Population | Total Population Over 18 | Total One Race | White | Black or African American | American Indian and Alaska Native | Asian | Native Hawaiian and Other Pacific Islander | Some other race | Two or more races | Hispanic or Latino (origin any race) |
| Pennsylvania | 12 281 054 | 9 358 833 | 12 138 830 | 10 484 203 | 1 224 612 | 18 348 | 219 813 | 3 417 | 188 437 | 142 224 | 394 088 |
| Washington County | 202 897 | 157 900 | 201 228 | 193 297 | 6 606 | 175 | 725 | 44 | 381 | 1 669 | 1 170 |
| Allenport borough | 549 | 469 | 547 | 545 | 2 | 0 | 0 | 0 | 0 | 2 | 2 |
| Amwell township | 3 960 | 3 012 | 3 935 | 3 903 | 24 | 5 | 3 | 0 | 0 | 25 | 7 |
| Beallsville borough | 511 | 390 | 511 | 507 | 4 | 0 | 0 | 0 | 0 | 0 | 0 |
| Bentleyville borough | 2 502 | 1 938 | 2 466 | 2 421 | 38 | 3 | 1 | 0 | 3 | 36 | 12 |
| Blaine township | 597 | 429 | 589 | 587 | 0 | 0 | 1 | 0 | 1 | 8 | 2 |
| Buffalo township | 2 100 | 1 622 | 2 089 | 2 077 | 3 | 2 | 4 | 0 | 3 | 11 | 7 |
| Burgettstown borough | 1 576 | 1 236 | 1 550 | 1 517 | 23 | 1 | 1 | 0 | 8 | 26 | 39 |
| California borough | 5 274 | 4 708 | 5 227 | 4 954 | 218 | 9 | 39 | 0 | 7 | 47 | 26 |
| Canonsburg borough | 8 607 | 6 863 | 8 478 | 7 833 | 562 | 5 | 55 | 7 | 16 | 129 | 62 |
| Canton township | 8 826 | 6 833 | 8 734 | 8 431 | 266 | 6 | 17 | 0 | 14 | 92 | 41 |
| Carroll township | 5 677 | 4 566 | 5 664 | 5 578 | 62 | 3 | 6 | 3 | 12 | 13 | 42 |
| Cecil township | 9 756 | 7 485 | 9 707 | 9 504 | 154 | 8 | 24 | 4 | 13 | 49 | 52 |
| Centerville borough | 3 390 | 2 654 | 3 377 | 3 351 | 6 | 5 | 7 | 0 | 8 | 13 | 9 |
| Charleroi borough | 4 871 | 3 872 | 4 832 | 4 643 | 158 | 6 | 14 | 0 | 11 | 39 | 35 |
| Chartiers township | 7 154 | 5 688 | 7 112 | 6 825 | 263 | 2 | 9 | 4 | 9 | 42 | 26 |
| Claysville borough | 724 | 539 | 722 | 720 | 2 | 0 | 0 | 0 | 0 | 2 | 0 |
| Coal Center borough | 134 | 111 | 129 | 129 | 0 | 0 | 0 | 0 | 0 | 5 | 2 |
| Cokeburg borough | 705 | 557 | 698 | 697 | 0 | 0 | 1 | 0 | 0 | 7 | 0 |
| Cross Creek township | 1 685 | 1 283 | 1 671 | 1 654 | 15 | 0 | 0 | 2 | 0 | 14 | 2 |
| Deemston borough | 809 | 625 | 807 | 803 | 3 | 0 | 0 | 0 | 1 | 2 | 3 |
| Donegal township | 2 428 | 1 841 | 2 417 | 2 409 | 2 | 2 | 2 | 2 | 0 | 11 | 3 |
| Donora borough | 5 653 | 4 429 | 5 522 | 4 641 | 839 | 8 | 15 | 1 | 18 | 131 | 114 |
| Dunlevy borough | 397 | 326 | 397 | 395 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
| East Bethlehem township | 2 524 | 1 973 | 2 500 | 2 426 | 60 | 10 | 1 | 0 | 3 | 24 | 12 |
| East Finley township | 1 489 | 1 087 | 1 488 | 1 485 | 2 | 1 | 0 | 0 | 0 | 1 | 0 |
| East Washington borough | 1 930 | 1 538 | 1 911 | 1 815 | 82 | 4 | 7 | 2 | 1 | 19 | 4 |
| Elco borough | 362 | 287 | 362 | 355 | 0 | 0 | 4 | 0 | 3 | 0 | 0 |
| Ellsworth borough | 1 083 | 860 | 1 067 | 1 040 | 25 | 0 | 1 | 0 | 1 | 16 | 7 |
| Fallowfield township | 4 461 | 3 639 | 4 442 | 4 365 | 64 | 3 | 7 | 0 | 3 | 19 | 28 |
| Finleyville borough | 459 | 367 | 453 | 421 | 27 | 0 | 4 | 0 | 1 | 6 | 3 |
| Green Hills borough | 18 | 12 | 18 | 18 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Hanover township | 2 795 | 2 191 | 2 788 | 2 754 | 17 | 4 | 6 | 1 | 6 | 7 | 11 |
| Hopewell township | 992 | 754 | 985 | 981 | 4 | 0 | 0 | 0 | 0 | 7 | 2 |
| Houston borough | 1 314 | 1 063 | 1 299 | 1 241 | 48 | 1 | 7 | 0 | 2 | 15 | 5 |
| Independence township | 1 676 | 1 300 | 1 662 | 1 652 | 5 | 5 | 0 | 0 | 0 | 14 | 3 |
| Jefferson township | 1 218 | 932 | 1 215 | 1 200 | 11 | 0 | 2 | 0 | 2 | 3 | 9 |
| Long Branch borough | 539 | 419 | 537 | 526 | 9 | 1 | 0 | 0 | 1 | 2 | 2 |
| McDonald borough | 1 866 | 1 464 | 1 844 | 1 713 | 122 | 3 | 0 | 2 | 4 | 22 | 6 |
| Marianna borough | 626 | 439 | 618 | 558 | 55 | 5 | 0 | 0 | 0 | 8 | 0 |
| Midway borough | 982 | 781 | 978 | 971 | 5 | 0 | 2 | 0 | 0 | 4 | 6 |
| Monongahela city | 4 761 | 3 804 | 4 708 | 4 520 | 155 | 4 | 9 | 0 | 20 | 53 | 34 |
| Morris township | 1 272 | 924 | 1 264 | 1 256 | 6 | 0 | 2 | 0 | 0 | 8 | 3 |
| Mount Pleasant township | 3 422 | 2 602 | 3 407 | 3 302 | 102 | 0 | 3 | 0 | 0 | 15 | 3 |
| New Eagle borough | 2 262 | 1 773 | 2 238 | 2 194 | 25 | 3 | 11 | 2 | 3 | 24 | 2 |
| North Bethlehem township | 1 746 | 1 340 | 1 743 | 1 735 | 2 | 0 | 4 | 0 | 2 | 3 | 2 |
| North Charleroi borough | 1 409 | 1 129 | 1 397 | 1 369 | 25 | 1 | 0 | 0 | 2 | 12 | 18 |
| North Franklin township | 4 818 | 3 834 | 4 788 | 4 642 | 116 | 8 | 19 | 0 | 3 | 30 | 17 |
| North Strabane township | 10 057 | 7 828 | 10 015 | 9 700 | 209 | 1 | 81 | 2 | 22 | 42 | 61 |
| Nottingham township | 2 522 | 1 932 | 2 515 | 2 499 | 14 | 0 | 2 | 0 | 0 | 7 | 5 |
| Peters township | 17 566 | 12 407 | 17 501 | 17 181 | 84 | 5 | 191 | 5 | 35 | 65 | 127 |
| Robinson township | 2 193 | 1 648 | 2 175 | 2 094 | 73 | 5 | 2 | 0 | 1 | 18 | 4 |
| Roscoe borough | 848 | 697 | 843 | 834 | 8 | 0 | 0 | 0 | 1 | 5 | 3 |
| Smith township | 4 567 | 3 480 | 4 545 | 4 449 | 83 | 3 | 5 | 0 | 5 | 22 | 44 |
| Somerset township | 2 701 | 2 126 | 2 689 | 2 675 | 5 | 0 | 2 | 0 | 7 | 12 | 11 |
| South Franklin township | 3 796 | 2 768 | 3 788 | 3 765 | 7 | 4 | 9 | 0 | 3 | 8 | 19 |
| South Strabane township | 7 987 | 6 334 | 7 956 | 7 775 | 126 | 4 | 39 | 1 | 11 | 31 | 32 |
| Speers borough | 1 241 | 1 021 | 1 237 | 1 212 | 9 | 0 | 16 | 0 | 0 | 4 | 3 |
| Stockdale borough | 555 | 461 | 553 | 548 | 4 | 0 | 1 | 0 | 0 | 2 | 1 |
| Twilight borough | 241 | 193 | 241 | 239 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
| Union township | 5 599 | 4 426 | 5 563 | 5 501 | 38 | 2 | 9 | 0 | 13 | 36 | 30 |
| Washington city | 15 268 | 12 032 | 14 918 | 12 501 | 2 229 | 23 | 69 | 3 | 93 | 350 | 144 |
| West Alexander borough | 320 | 225 | 318 | 313 | 5 | 0 | 0 | 0 | 0 | 2 | 3 |
| West Bethlehem township | 1 432 | 1 118 | 1 424 | 1 413 | 8 | 0 | 2 | 0 | 1 | 8 | 0 |
| West Brownsville borough | 1 075 | 894 | 1 071 | 1 055 | 7 | 1 | 0 | 0 | 8 | 4 | 4 |
| West Finley township | 951 | 692 | 943 | 940 | 0 | 1 | 2 | 0 | 0 | 8 | 2 |
| West Middletown borough | 144 | 119 | 138 | 130 | 6 | 0 | 0 | 2 | 0 | 6 | 0 |
| West Pike Run township | 1 925 | 1 511 | 1 902 | 1 810 | 76 | 8 | 7 | 1 | 0 | 23 | 14 |
| Source: US Census Bureau | Prepared by the Pennsylvania State Data Center | ||||||||||