Mercer County, Pennsylvania
Precinct data
Results by precinct
191 precincts · 58,410 votes
Precinct boundaries and identifiers are cycle-specific. This table does not join rows across years without a validated crosswalk.
| Precinct 0530420850530 | 279 | 961 | 10 | 1,250 | 22.3% | 76.9% | R+54.6 |
|---|---|---|---|---|---|---|---|
| Precinct 0020420850020 | 304 | 915 | 10 | 1,229 | 24.7% | 74.5% | R+49.7 |
| Precinct 0425420850425 | 483 | 712 | 10 | 1,205 | 40.1% | 59.1% | R+19.0 |
| Precinct 0040420850040 | 309 | 857 | 5 | 1,171 | 26.4% | 73.2% | R+46.8 |
| Precinct 0960420850960 | 325 | 837 | 8 | 1,170 | 27.8% | 71.5% | R+43.8 |
| Precinct 1070420851070 | 291 | 811 | 12 | 1,114 | 26.1% | 72.8% | R+46.7 |
| Precinct 1005420851005 | 250 | 842 | 7 | 1,099 | 22.7% | 76.6% | R+53.9 |
| Precinct 0515420850515 | 275 | 775 | 11 | 1,061 | 25.9% | 73.0% | R+47.1 |
| Precinct 0340420850340 | 262 | 769 | 7 | 1,038 | 25.2% | 74.1% | R+48.8 |
| Precinct 0950420850950 | 339 | 636 | 7 | 982 | 34.5% | 64.8% | R+30.2 |
| Precinct 0640420850640 | 247 | 724 | 6 | 977 | 25.3% | 74.1% | R+48.8 |
| Precinct 0550420850550 | 260 | 695 | 10 | 965 | 26.9% | 72.0% | R+45.1 |
| Precinct 0650420850650 | 282 | 667 | 5 | 954 | 29.6% | 69.9% | R+40.4 |
| Precinct 0405420850405 | 392 | 546 | 6 | 944 | 41.5% | 57.8% | R+16.3 |
| Precinct 0972420850972 | 284 | 648 | 8 | 940 | 30.2% | 68.9% | R+38.7 |
| Precinct 0355420850355 | 372 | 552 | 7 | 931 | 40.0% | 59.3% | R+19.3 |
| Precinct 0050420850050 | 220 | 699 | 6 | 925 | 23.8% | 75.6% | R+51.8 |
| Precinct 0651420850651 | 231 | 680 | 4 | 915 | 25.2% | 74.3% | R+49.1 |
| Precinct 0912420850912 | 387 | 493 | 13 | 893 | 43.3% | 55.2% | R+11.9 |
| Precinct 0435420850435 | 357 | 509 | 7 | 873 | 40.9% | 58.3% | R+17.4 |
| Precinct 0445420850445 | 304 | 554 | 4 | 862 | 35.3% | 64.3% | R+29.0 |
| Precinct 0365420850365 | 322 | 497 | 1 | 820 | 39.3% | 60.6% | R+21.3 |
| Precinct 0310420850310 | 292 | 520 | 5 | 817 | 35.7% | 63.6% | R+27.9 |
| Precinct 0670420850670 | 239 | 568 | 4 | 811 | 29.5% | 70.0% | R+40.6 |
| Precinct 0885420850885 | 367 | 424 | 10 | 801 | 45.8% | 52.9% | R+7.1 |
| Precinct 0160420850160 | 177 | 602 | 6 | 785 | 22.5% | 76.7% | R+54.1 |
| Precinct 0862420850862 | 440 | 335 | 10 | 785 | 56.1% | 42.7% | D+13.4 |
| Precinct 0480420850480 | 165 | 612 | 6 | 783 | 21.1% | 78.2% | R+57.1 |
| Precinct 0660420850660 | 212 | 565 | 2 | 779 | 27.2% | 72.5% | R+45.3 |
| Precinct 1090420851090 | 160 | 608 | 8 | 776 | 20.6% | 78.4% | R+57.7 |
| Precinct 0630420850630 | 155 | 606 | 9 | 770 | 20.1% | 78.7% | R+58.6 |
| Precinct 0270420850270 | 198 | 525 | 14 | 737 | 26.9% | 71.2% | R+44.4 |
| Precinct 0300420850300 | 269 | 447 | 16 | 732 | 36.7% | 61.1% | R+24.3 |
| Precinct 0974420850974 | 272 | 454 | 6 | 732 | 37.2% | 62.0% | R+24.9 |
| Precinct 0330420850330 | 217 | 505 | 8 | 730 | 29.7% | 69.2% | R+39.5 |
| Precinct 0700420850700 | 136 | 584 | 2 | 722 | 18.8% | 80.9% | R+62.0 |
| Precinct 0235420850235 | 247 | 450 | 9 | 706 | 35.0% | 63.7% | R+28.8 |
| Precinct 0385420850385 | 341 | 362 | 3 | 706 | 48.3% | 51.3% | R+3.0 |
| Precinct 0245420850245 | 260 | 428 | 4 | 692 | 37.6% | 61.8% | R+24.3 |
| Precinct 0455420850455 | 339 | 337 | 7 | 683 | 49.6% | 49.3% | D+0.3 |
| Precinct 1055420851055 | 229 | 427 | 1 | 657 | 34.9% | 65.0% | R+30.1 |
| Precinct 0395420850395 | 326 | 311 | 9 | 646 | 50.5% | 48.1% | D+2.3 |
| Precinct 0775420850775 | 309 | 318 | 7 | 634 | 48.7% | 50.2% | R+1.4 |
| Precinct 0475420850475 | 256 | 370 | 7 | 633 | 40.4% | 58.5% | R+18.0 |
| Precinct 0895420850895 | 293 | 332 | 1 | 626 | 46.8% | 53.0% | R+6.2 |
| Precinct 0280420850280 | 217 | 394 | 8 | 619 | 35.1% | 63.7% | R+28.6 |
| Precinct 0190420850190 | 139 | 447 | 3 | 589 | 23.6% | 75.9% | R+52.3 |
| Precinct 0755420850755 | 290 | 296 | 3 | 589 | 49.2% | 50.3% | R+1.0 |
| Precinct 0465420850465 | 281 | 287 | 8 | 576 | 48.8% | 49.8% | R+1.0 |
| Precinct 1030420851030 | 155 | 415 | 5 | 575 | 27.0% | 72.2% | R+45.2 |
| Precinct 0290420850290 | 231 | 324 | 8 | 563 | 41.0% | 57.5% | R+16.5 |
| Precinct 0835420850835 | 281 | 273 | 8 | 562 | 50.0% | 48.6% | D+1.4 |
| Precinct 0565420850565 | 180 | 371 | 4 | 555 | 32.4% | 66.8% | R+34.4 |
| Precinct 1020420851020 | 150 | 393 | 4 | 547 | 27.4% | 71.8% | R+44.4 |
| Precinct 1115420851115 | 121 | 425 | 1 | 547 | 22.1% | 77.7% | R+55.6 |
| Precinct 0765420850765 | 252 | 286 | 1 | 539 | 46.8% | 53.1% | R+6.3 |
| Precinct 0415420850415 | 209 | 320 | 7 | 536 | 39.0% | 59.7% | R+20.7 |
| Precinct 0792420850792 | 297 | 230 | 3 | 530 | 56.0% | 43.4% | D+12.6 |
| Precinct 0575420850575 | 191 | 317 | 7 | 515 | 37.1% | 61.6% | R+24.5 |
| Precinct 0732420850732 | 252 | 251 | 10 | 513 | 49.1% | 48.9% | D+0.2 |
| Precinct 0215420850215 | 149 | 326 | 5 | 480 | 31.0% | 67.9% | R+36.9 |
| Precinct 0375420850375 | 182 | 287 | 7 | 476 | 38.2% | 60.3% | R+22.1 |
| Precinct 1100420851100 | 109 | 357 | 7 | 473 | 23.0% | 75.5% | R+52.4 |
| Precinct 0150420850150 | 301 | 168 | 3 | 472 | 63.8% | 35.6% | D+28.2 |
| Precinct 0320420850320 | 127 | 337 | 4 | 468 | 27.1% | 72.0% | R+44.9 |
| Precinct 0590420850590 | 75 | 386 | 2 | 463 | 16.2% | 83.4% | R+67.2 |
| Precinct 1040420851040 | 163 | 293 | 2 | 458 | 35.6% | 64.0% | R+28.4 |
| Precinct 0140420850140 | 347 | 95 | 3 | 445 | 78.0% | 21.3% | D+56.6 |
| Precinct 0690420850690 | 74 | 369 | 2 | 445 | 16.6% | 82.9% | R+66.3 |
| Precinct 0822420850822 | 287 | 145 | 3 | 435 | 66.0% | 33.3% | D+32.6 |
| Precinct 0180420850180 | 88 | 342 | 3 | 433 | 20.3% | 79.0% | R+58.7 |
| Precinct 0680420850680 | 80 | 335 | 3 | 418 | 19.1% | 80.1% | R+61.0 |
| Precinct 0125420850125 | 350 | 60 | 3 | 413 | 84.7% | 14.5% | D+70.2 |
| Precinct 0060420850060 | 60 | 342 | 6 | 408 | 14.7% | 83.8% | R+69.1 |
| Precinct 0225420850225 | 171 | 222 | 7 | 400 | 42.8% | 55.5% | R+12.8 |
| Precinct 0825420850825 | 234 | 139 | 2 | 375 | 62.4% | 37.1% | D+25.3 |
| Precinct 0010420850010 | 124 | 242 | 2 | 368 | 33.7% | 65.8% | R+32.1 |
| Precinct 0710420850710 | 88 | 271 | 9 | 368 | 23.9% | 73.6% | R+49.7 |
| Precinct 0540420850540 | 65 | 275 | 2 | 342 | 19.0% | 80.4% | R+61.4 |
| Precinct 0735420850735 | 140 | 184 | 4 | 328 | 42.7% | 56.1% | R+13.4 |
| Precinct 0110420850110 | 242 | 74 | 5 | 321 | 75.4% | 23.1% | D+52.3 |
| Precinct 0500420850500 | 113 | 201 | 3 | 317 | 35.6% | 63.4% | R+27.8 |
| Precinct 0620420850620 | 76 | 224 | 5 | 305 | 24.9% | 73.4% | R+48.5 |
| Precinct 1080420851080 | 154 | 135 | 3 | 292 | 52.7% | 46.2% | D+6.5 |
| Precinct 0610420850610 | 67 | 219 | 2 | 288 | 23.3% | 76.0% | R+52.8 |
| Precinct 0170420850170 | 69 | 202 | 5 | 276 | 25.0% | 73.2% | R+48.2 |
| Precinct 0030420850030 | 51 | 206 | 1 | 258 | 19.8% | 79.8% | R+60.1 |
| Precinct 0072420850072 | 169 | 30 | 0 | 199 | 84.9% | 15.1% | D+69.8 |
| Precinct 0490420850490 | 43 | 71 | 2 | 116 | 37.1% | 61.2% | R+24.1 |
| Precinct 0600420850600 | 13 | 69 | 1 | 83 | 15.7% | 83.1% | R+67.5 |
| Precinct 0940420850940 | 14 | 57 | 0 | 71 | 19.7% | 80.3% | R+60.6 |
| CLARK Voting District42_4208510 | 0 | 0 | 0 | 0 | — | — | Even |
| COOLSPRING TWP Voting District42_4208520 | 0 | 0 | 0 | 0 | — | — | Even |
| DEER CREEK TWP Voting District42_4208530 | 0 | 0 | 0 | 0 | — | — | Even |
| DELAWARE TWP Voting District42_4208540 | 0 | 0 | 0 | 0 | — | — | Even |
| EAST LACKAWANNOCK TWP Voting District42_4208550 | 0 | 0 | 0 | 0 | — | — | Even |
| FAIRVIEW TWP Voting District42_4208560 | 0 | 0 | 0 | 0 | — | — | Even |
| FARRELL VTD 01 ED 0142_4208575 | 0 | 0 | 0 | 0 | — | — | Even |
| FARRELL VTD 01 ED 0242_4208595 | 0 | 0 | 0 | 0 | — | — | Even |
| FARRELL VTD 01 ED 0342_42085110 | 0 | 0 | 0 | 0 | — | — | Even |
| FARRELL VTD 02 ED 0142_42085120 | 0 | 0 | 0 | 0 | — | — | Even |
| FARRELL VTD 02 ED 0242_42085130 | 0 | 0 | 0 | 0 | — | — | Even |
| FARRELL VTD 02 ED 0342_42085140 | 0 | 0 | 0 | 0 | — | — | Even |
| FARRELL VTD 02 ED 0442_42085150 | 0 | 0 | 0 | 0 | — | — | Even |
| FINDLEY TWP Voting District42_42085160 | 0 | 0 | 0 | 0 | — | — | Even |
| FREDONIA Voting District42_42085170 | 0 | 0 | 0 | 0 | — | — | Even |
| FRENCH CREEK TWP Voting District42_42085180 | 0 | 0 | 0 | 0 | — | — | Even |
| GREENE TWP Voting District42_42085190 | 0 | 0 | 0 | 0 | — | — | Even |
| GREENVILLE VTD 0142_42085215 | 0 | 0 | 0 | 0 | — | — | Even |
| GREENVILLE VTD 0242_42085225 | 0 | 0 | 0 | 0 | — | — | Even |
| GREENVILLE VTD 0342_42085235 | 0 | 0 | 0 | 0 | — | — | Even |
| GREENVILLE VTD 0442_42085245 | 0 | 0 | 0 | 0 | — | — | Even |
| GROVE CITY VTD 0142_42085270 | 0 | 0 | 0 | 0 | — | — | Even |
| GROVE CITY VTD 0242_42085280 | 0 | 0 | 0 | 0 | — | — | Even |
| GROVE CITY VTD 0342_42085290 | 0 | 0 | 0 | 0 | — | — | Even |
| GROVE CITY VTD 0442_42085300 | 0 | 0 | 0 | 0 | — | — | Even |
| GROVE CITY VTD 0542_42085310 | 0 | 0 | 0 | 0 | — | — | Even |
| HEMPFIELD TWP VTD 0142_42085320 | 0 | 0 | 0 | 0 | — | — | Even |
| HEMPFIELD TWP VTD 0242_42085330 | 0 | 0 | 0 | 0 | — | — | Even |
| HEMPFIELD TWP VTD 0342_42085340 | 0 | 0 | 0 | 0 | — | — | Even |
| HERMITAGE VTD NE ED 0142_42085355 | 0 | 0 | 0 | 0 | — | — | Even |
| HERMITAGE VTD NE ED 0242_42085365 | 0 | 0 | 0 | 0 | — | — | Even |
| HERMITAGE VTD NW ED 0142_42085375 | 0 | 0 | 0 | 0 | — | — | Even |
| HERMITAGE VTD NW ED 0242_42085385 | 0 | 0 | 0 | 0 | — | — | Even |
| HERMITAGE VTD NW ED 0342_42085395 | 0 | 0 | 0 | 0 | — | — | Even |
| HERMITAGE VTD NW ED 0442_42085405 | 0 | 0 | 0 | 0 | — | — | Even |
| HERMITAGE VTD SE ED 0142_42085415 | 0 | 0 | 0 | 0 | — | — | Even |
| HERMITAGE VTD SE ED 0242_42085425 | 0 | 0 | 0 | 0 | — | — | Even |
| HERMITAGE VTD SE ED 0342_42085435 | 0 | 0 | 0 | 0 | — | — | Even |
| HERMITAGE VTD SE ED 0442_42085445 | 0 | 0 | 0 | 0 | — | — | Even |
| HERMITAGE VTD SW ED 0142_42085455 | 0 | 0 | 0 | 0 | — | — | Even |
| HERMITAGE VTD SW ED 0242_42085465 | 0 | 0 | 0 | 0 | — | — | Even |
| HERMITAGE VTD SW ED 0342_42085475 | 0 | 0 | 0 | 0 | — | — | Even |
| JACKSON CENTER Voting District42_42085490 | 0 | 0 | 0 | 0 | — | — | Even |
| JACKSON TWP Voting District42_42085480 | 0 | 0 | 0 | 0 | — | — | Even |
| JAMESTOWN Voting District42_42085500 | 0 | 0 | 0 | 0 | — | — | Even |
| JEFFERSON TWP VTD EAST42_42085510 | 0 | 0 | 0 | 0 | — | — | Even |
| JEFFERSON TWP VTD WEST42_42085520 | 0 | 0 | 0 | 0 | — | — | Even |
| LACKAWANNOCK TWP Voting District42_42085530 | 0 | 0 | 0 | 0 | — | — | Even |
| LAKE TWP Voting District42_42085540 | 0 | 0 | 0 | 0 | — | — | Even |
| LIBERTY TWP Voting District42_42085550 | 0 | 0 | 0 | 0 | — | — | Even |
| MERCER VTD NORTH42_42085565 | 0 | 0 | 0 | 0 | — | — | Even |
| MERCER VTD SOUTH42_42085575 | 0 | 0 | 0 | 0 | — | — | Even |
| MILLCREEK TWP Voting District42_42085590 | 0 | 0 | 0 | 0 | — | — | Even |
| NEW LEBANON Voting District42_42085600 | 0 | 0 | 0 | 0 | — | — | Even |
| NEW VERNON TWP Voting District42_42085610 | 0 | 0 | 0 | 0 | — | — | Even |
| OTTER CREEK TWP Voting District42_42085620 | 0 | 0 | 0 | 0 | — | — | Even |
| PERRY TWP Voting District42_42085630 | 0 | 0 | 0 | 0 | — | — | Even |
| PINE TWP VTD 0142_42085640 | 0 | 0 | 0 | 0 | — | — | Even |
| PINE TWP VTD 0242_42085650 | 0 | 0 | 0 | 0 | — | — | Even |
| PYMATUNING TWP VTD 0142_42085660 | 0 | 0 | 0 | 0 | — | — | Even |
| PYMATUNING TWP VTD 0242_42085670 | 0 | 0 | 0 | 0 | — | — | Even |
| SALEM TWP Voting District42_42085680 | 0 | 0 | 0 | 0 | — | — | Even |
| SANDY CREEK TWP Voting District42_42085690 | 0 | 0 | 0 | 0 | — | — | Even |
| SANDY LAKE TWP Voting District42_42085700 | 0 | 0 | 0 | 0 | — | — | Even |
| SANDY LAKE Voting District42_42085710 | 0 | 0 | 0 | 0 | — | — | Even |
| SHARON VTD 01 ED 0142_42085735 | 0 | 0 | 0 | 0 | — | — | Even |
| SHARON VTD 02 ED 0142_42085745 | 0 | 0 | 0 | 0 | — | — | Even |
| SHARON VTD 02 ED 0242_42085755 | 0 | 0 | 0 | 0 | — | — | Even |
| SHARON VTD 02 ED 0342_42085765 | 0 | 0 | 0 | 0 | — | — | Even |
| SHARON VTD 02 ED 0442_42085775 | 0 | 0 | 0 | 0 | — | — | Even |
| SHARON VTD 02 ED 0542_42085785 | 0 | 0 | 0 | 0 | — | — | Even |
| SHARON VTD 03 ED 0142_42085795 | 0 | 0 | 0 | 0 | — | — | Even |
| SHARON VTD 03 ED 0242_42085805 | 0 | 0 | 0 | 0 | — | — | Even |
| SHARON VTD 04 ED 0142_42085815 | 0 | 0 | 0 | 0 | — | — | Even |
| SHARON VTD 04 ED 0242_42085825 | 0 | 0 | 0 | 0 | — | — | Even |
| SHARON VTD 04 ED 0342_42085835 | 0 | 0 | 0 | 0 | — | — | Even |
| SHARON VTD 04 ED 0442_42085845 | 0 | 0 | 0 | 0 | — | — | Even |
| SHARON VTD 04 ED 0542_42085855 | 0 | 0 | 0 | 0 | — | — | Even |
| SHARON VTD 04 ED 0642_42085865 | 0 | 0 | 0 | 0 | — | — | Even |
| SHARPSVILLE VTD 0142_42085885 | 0 | 0 | 0 | 0 | — | — | Even |
| SHARPSVILLE VTD 0242_42085895 | 0 | 0 | 0 | 0 | — | — | Even |
| SHARPSVILLE VTD 0342_42085910 | 0 | 0 | 0 | 0 | — | — | Even |
| SHARPSVILLE VTD 0442_42085920 | 0 | 0 | 0 | 0 | — | — | Even |
| SHEAKLEYVILLE Voting District42_42085940 | 0 | 0 | 0 | 0 | — | — | Even |
| SHENANGO TWP VTD EAST42_42085950 | 0 | 0 | 0 | 0 | — | — | Even |
| SHENANGO TWP VTD WEST42_42085960 | 0 | 0 | 0 | 0 | — | — | Even |
| SOUTH PYMATUNING TWP VTD 0142_42085970 | 0 | 0 | 0 | 0 | — | — | Even |
| SOUTH PYMATUNING TWP VTD 0242_42085980 | 0 | 0 | 0 | 0 | — | — | Even |
| SOUTH PYMATUNING TWP VTD 0342_42085990 | 0 | 0 | 0 | 0 | — | — | Even |
| SPRINGFIELD TWP VTD EAST42_420851000 | 0 | 0 | 0 | 0 | — | — | Even |
| SPRINGFIELD TWP VTD WEST42_420851010 | 0 | 0 | 0 | 0 | — | — | Even |
| STONEBORO Voting District42_420851020 | 0 | 0 | 0 | 0 | — | — | Even |
| SUGAR GROVE TWP Voting District42_420851030 | 0 | 0 | 0 | 0 | — | — | Even |
| WEST MIDDLESEX Voting District42_420851040 | 0 | 0 | 0 | 0 | — | — | Even |
| WEST SALEM TWP VTD EAST42_420851055 | 0 | 0 | 0 | 0 | — | — | Even |
| WEST SALEM TWP VTD WEST42_420851070 | 0 | 0 | 0 | 0 | — | — | Even |
| WHEATLAND Voting District42_420851080 | 0 | 0 | 0 | 0 | — | — | Even |
| WILMINGTON TWP Voting District42_420851090 | 0 | 0 | 0 | 0 | — | — | Even |
| WOLF CREEK TWP Voting District42_420851100 | 0 | 0 | 0 | 0 | — | — | Even |
| WORTH TWP Voting District42_420851115 | 0 | 0 | 0 | 0 | — | — | Even |
presidential history
Presidential margin, 1892–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1892 | −8.2% |
| 1896 | −13.5% |
| 1900 | −16.4% |
| 1904 | −33.5% |
| 1908 | −7.5% |
| 1912 | +17.0% |
| 1916 | +3.8% |
| 1920 | −35.2% |
| 1924 | −48.8% |
| 1928 | −46.3% |
| 1932 | −11.8% |
| 1936 | +5.9% |
| 1940 | −10.7% |
| 1944 | −8.3% |
| 1948 | −7.8% |
| 1952 | −11.9% |
| 1956 | −18.5% |
| 1960 | −9.1% |
| 1964 | +27.8% |
| 1968 | −0.6% |
| 1972 | −21.0% |
| 1976 | +5.3% |
| 1980 | −5.8% |
| 1984 | +0.9% |
| 1988 | +6.5% |
| 1992 | +14.4% |
| 1996 | +12.6% |
| 2000 | +1.4% |
| 2004 | −2.9% |
| 2008 | −0.3% |
| 2012 | −3.3% |
| 2016 | −24.2% |
| 2020 | −26.0% |
| 2024 | −30.2% |
DemocraticRepublican
Congressional elections · 3 Senate races
U.S. Senate
voter registration
Registered voters
By party of registration, over time
Party registration · 2026R+21.1
Presidential vote · 2024R+30.2
Registration leans Republican; the presidential vote runs 9.1 points more Democratic.
71,800 registered voters · 2026
domestic migration
Who moves in and out
Net migration over time, and who arrivals are — where they came from and what those places vote
+85 net domestic migration · 2025
20112025
Net −4,371 over 2011–2025 · gain loss
Arrivals reported $55,958 in average income, against $68,567 for residents who stayed — 18% lower. (IRS SOI, 2022–23)
The places arrivals came from lean R+20.9 on average — 9.3 points more Democratic-leaning than Mercer County, PA itself (R+30.2).
Where arrivals came from lean of each source
- Trumbull County, OH179R+16.8
- Lawrence County, PA173R+33.8
- Crawford County, PA159R+39.2
- Butler County, PA152R+32.2
- Allegheny County, PA129D+20.3
- Venango County, PA77R+42.1
Where departures went households, 2022–23
- Trumbull County, OH237
- Lawrence County, PA178
- Allegheny County, PA177
- Butler County, PA158
- Crawford County, PA134
- Mahoning County, OH87
Migration is one input to a place’s political change, not its cause — a shift can also come from residents changing their minds, generational turnover, or turnout. These figures describe the places people moved between; they do not measure how any mover voted.
| Year | Net domestic migration |
|---|---|
| 2011 | −208 |
| 2012 | −282 |
| 2013 | −213 |
| 2014 | −251 |
| 2015 | −778 |
| 2016 | −841 |
| 2017 | −833 |
| 2018 | −660 |
| 2019 | −691 |
| 2021 | +118 |
| 2022 | +36 |
| 2023 | −9 |
| 2024 | +156 |
| 2025 | +85 |
Mercer County's working-class, post-industrial economy tracked closely with statewide results through the 1990s, but the county has shifted decisively rightward over the past two decades, posting a 30-point Republican margin in 2024.
Across the recorded series it reached a Democratic high of 27.8 points in 1964 and a Republican high of 48.8 points in 1924. Between 2020 and 2024 the county moved 4.1 points toward the Republican candidate; the 2024 margin was 30.2 points.
A population of 109,257, a 88% non-Hispanic-white share, and a median household income of $59,976 describe the county. The county's voting pattern over the last decade is most similar to that of Jefferson County and Fayette County.
Political twins — counties
The counties whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Jefferson County
Ohio
92.0twin score
2000–2012 trajectory
Fayette County
Pennsylvania
91.2twin score
12-yr trendItalian ancestry2004–2008 trajectory≠ Scottish ancestry
Ashtabula County
Ohio
87.8twin score
2000–2004 trajectoryItalian ancestrypopulation scale≠ 12-yr trend
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
Browse places by community — income, education, race & ethnicity, language — all community cuts →
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Mercer County, Pennsylvania. Akashic. https://akashic.app/county/42085/. Accessed May 20, 2026. License: CC BY 4.0.
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Cities & towns in Mercer County
Pennsylvania at the ballot boxAll elections →
Frequently asked questions
How did Mercer County, Pennsylvania vote in 2024?
In 2024, Mercer County, Pennsylvania voted Republican by 30.2 points (R+30.2), carried by the Republican candidate. Out of 58,410 votes cast, 20,145 went Democratic and 37,761 went Republican.
When did Mercer County, Pennsylvania last vote Democratic?
The most recent presidential election in which Mercer County, Pennsylvania voted Democratic was 2000.
How many people live in Mercer County, Pennsylvania?
Mercer County, Pennsylvania has a population of 109,257 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Mercer County, Pennsylvania?
Median household income in Mercer County, Pennsylvania is $59,976 — below the national median of $80,734. The Pennsylvania state median is $77,971.
What is the political history of Mercer County, Pennsylvania?
Akashic tracks 38 presidential elections in Mercer County, Pennsylvania from 1876 to 2024. Of those, 9 went Democratic and 24 went Republican.