| County | Bachmann | Cain | Gingrich | Huntsman | Johnson | Paul | Perry | Romney | Santorum | Total | Cast | Reg. Voters | Turnout | |||||
| Beaufort | 23 | 325 | 9652 | 35.33% | 134 | 13 | 1884 | 6.90% | 73 | 11736 | 42.96% | 3477 | 12.73% | 27317 | 27413 | 102814 | 26.66% | |
| Richland | 25 | 779 | 11145 | 31.52% | 117 | 14 | 4510 | 12.76% | 124 | 13417 | 37.95% | 5227 | 14.78% | 35358 | 35444 | 235025 | 15.08% | |
| Charleston | 25 | 1090 | 15310 | 32.57% | 125 | 14 | 6540 | 13.91% | 130 | 16929 | 36.01% | 6850 | 14.57% | 47013 | 47111 | 235061 | 20.04% | |
| Georgetown | 8 | 91 | 4388 | 45.55% | 30 | 4 | 682 | 7.08% | 40 | 3242 | 33.66% | 1148 | 11.92% | 9633 | 9673 | 41003 | 23.59% | |
| Sumter | 10 | 63 | 3648 | 39.27% | 10 | 3 | 939 | 10.11% | 53 | 2974 | 32.02% | 1589 | 17.11% | 9289 | 9326 | 64467 | 14.47% | |
| McCormick | 1 | 5 | 775 | 50.55% | 5 | 1 | 103 | 6.72% | 11 | 488 | 31.83% | 144 | 9.39% | 1533 | 1536 | 6704 | 22.91% | |
| Kershaw | 6 | 41 | 3278 | 37.88% | 8 | 0 | 1240 | 14.33% | 35 | 2676 | 30.93% | 1369 | 15.82% | 8653 | 8675 | 38582 | 22.48% | |
| Lexington | 28 | 357 | 16070 | 36.55% | 67 | 17 | 5843 | 13.29% | 169 | 13496 | 30.70% | 7921 | 18.02% | 43968 | 44094 | 159055 | 27.72% | |
| Horry | 39 | 371 | 18569 | 45.66% | 64 | 13 | 3980 | 9.79% | 188 | 12199 | 29.99% | 5248 | 12.90% | 40671 | 40803 | 165780 | 24.61% | |
| Fairfield | 2 | 8 | 942 | 41.39% | 2 | 1 | 254 | 11.16% | 18 | 661 | 29.04% | 388 | 17.05% | 2276 | 2286 | 15490 | 14.76% | |
| Jasper | 3 | 21 | 857 | 46.63% | 5 | 1 | 114 | 6.20% | 12 | 532 | 28.94% | 293 | 15.94% | 1838 | 1847 | 13804 | 13.38% | |
| Newberry | 1 | 18 | 2060 | 42.80% | 9 | 1 | 624 | 12.96% | 31 | 1371 | 28.49% | 698 | 14.50% | 4813 | 4827 | 22100 | 21.84% | |
| Clarendon | 1 | 15 | 1677 | 48.58% | 1 | 2 | 270 | 7.82% | 16 | 966 | 27.98% | 504 | 14.60% | 3452 | 3479 | 22916 | 15.18% | |
| Dorchester | 21 | 199 | 6592 | 36.76% | 30 | 10 | 2298 | 12.82% | 77 | 4927 | 27.48% | 3777 | 21.06% | 17931 | 17983 | 82927 | 21.69% | |
| Oconee | 11 | 164 | 4860 | 37.73% | 33 | 2 | 2051 | 15.92% | 78 | 3462 | 26.87% | 2221 | 17.24% | 12882 | 12923 | 44844 | 28.82% | |
| Berkeley | 19 | 229 | 7684 | 36.64% | 29 | 9 | 2768 | 13.20% | 94 | 5613 | 26.76% | 4528 | 21.59% | 20973 | 21051 | 98949 | 21.27% | |
| Bamberg | 3 | 7 | 512 | 51.51% | 2 | 1 | 82 | 8.25% | 7 | 262 | 26.36% | 118 | 11.87% | 994 | 1000 | 8986 | 11.13% | |
| Allendale | 4 | 4 | 178 | 51.15% | 0 | 0 | 24 | 6.90% | 5 | 91 | 26.15% | 42 | 12.07% | 348 | 349 | 5946 | 5.87% | |
| Orangeburg | 6 | 30 | 2888 | 47.14% | 9 | 1 | 695 | 11.35% | 29 | 1592 | 25.99% | 876 | 14.30% | 6126 | 6158 | 60889 | 10.11% | |
| Marion | 2 | 7 | 1169 | 52.23% | 6 | 0 | 193 | 8.62% | 2 | 574 | 25.65% | 285 | 12.73% | 2238 | 2248 | 22126 | 10.16% | |
| Aiken | 25 | 207 | 12026 | 49.33% | 64 | 4 | 2422 | 9.94% | 81 | 6211 | 25.48% | 3337 | 13.69% | 24377 | 24449 | 99859 | 24.48% | |
| Greenville | 49 | 792 | 30662 | 39.68% | 136 | 36 | 12142 | 15.71% | 247 | 19629 | 25.40% | 13577 | 17.57% | 77270 | 77452 | 278185 | 27.84% | |
| Calhoun | 0 | 13 | 837 | 44.47% | 4 | 2 | 271 | 14.40% | 6 | 475 | 25.24% | 274 | 14.56% | 1882 | 1890 | 10403 | 18.17% | |
| Lee | 1 | 5 | 591 | 45.05% | 1 | 2 | 156 | 11.89% | 10 | 319 | 24.31% | 227 | 17.30% | 1312 | 1327 | 12207 | 10.87% | |
| Darlington | 9 | 39 | 3383 | 48.82% | 10 | 4 | 686 | 9.90% | 30 | 1661 | 23.97% | 1108 | 15.99% | 6930 | 6958 | 41214 | 16.88% | |
| Saluda | 1 | 10 | 1268 | 47.40% | 3 | 1 | 282 | 10.54% | 15 | 635 | 23.74% | 460 | 17.20% | 2675 | 2686 | 11397 | 23.57% | |
| Florence | 20 | 82 | 7639 | 51.34% | 24 | 7 | 1212 | 8.15% | 72 | 3532 | 23.74% | 2292 | 15.40% | 14880 | 14934 | 81236 | 18.38% | |
| Greenwood | 7 | 58 | 3855 | 42.55% | 9 | 3 | 1505 | 16.61% | 77 | 2149 | 23.72% | 1397 | 15.42% | 9060 | 9090 | 39138 | 23.23% | |
| Marlboro | 6 | 6 | 626 | 47.97% | 4 | 0 | 101 | 7.74% | 12 | 307 | 23.52% | 243 | 18.62% | 1305 | 1315 | 17471 | 7.53% | |
| Hampton | 1 | 8 | 580 | 50.83% | 1 | 1 | 92 | 8.06% | 13 | 266 | 23.31% | 179 | 15.69% | 1141 | 1150 | 13040 | 8.82% | |
| York | 32 | 325 | 12058 | 38.14% | 49 | 6 | 4248 | 13.44% | 100 | 7193 | 22.75% | 7600 | 24.04% | 31611 | 31,674 | 136814 | 23.15% | |
| Lancaster | 5 | 59 | 3865 | 43.21% | 11 | 2 | 863 | 9.65% | 41 | 2026 | 22.65% | 2072 | 23.17% | 8944 | 8983 | 45833 | 19.60% | |
| Colleton | 6 | 33 | 2036 | 47.16% | 8 | 1 | 436 | 10.10% | 39 | 973 | 22.54% | 785 | 18.18% | 4317 | 4339 | 23671 | 18.33% | |
| Barnwell | 2 | 9 | 1074 | 54.94% | 2 | 0 | 141 | 7.21% | 15 | 439 | 22.46% | 273 | 13.96% | 1955 | 1965 | 13373 | 14.69% | |
| Spartanburg | 29 | 330 | 15308 | 40.06% | 51 | 12 | 5917 | 15.48% | 170 | 8506 | 22.26% | 7893 | 20.65% | 38216 | 38308 | 159515 | 24.02% | |
| Williamsburg | 5 | 6 | 1275 | 56.74% | 3 | 1 | 134 | 5.96% | 16 | 496 | 22.07% | 311 | 13.84% | 2247 | 2266 | 22150 | 10.23% | |
| Chesterfield | 2 | 6 | 1567 | 49.00% | 6 | 1 | 244 | 7.63% | 26 | 700 | 21.89% | 646 | 20.20% | 3198 | 3218 | 23621 | 13.62% | |
| Anderson | 9 | 178 | 11969 | 43.59% | 32 | 6 | 4707 | 17.14% | 120 | 5926 | 21.58% | 4508 | 16.42% | 27455 | 27527 | 107035 | 25.72% | |
| Dillon | 5 | 12 | 1061 | 54.38% | 1 | 0 | 129 | 6.61% | 8 | 412 | 21.12% | 323 | 16.56% | 1951 | 1961 | 19905 | 9.85% | |
| Pickens | 12 | 197 | 7894 | 42.00% | 36 | 8 | 3295 | 17.53% | 83 | 3950 | 21.01% | 3322 | 17.67% | 18797 | 18848 | 64154 | 29.38% | |
| Laurens | 12 | 41 | 3297 | 41.83% | 13 | 0 | 1444 | 18.32% | 37 | 1580 | 20.05% | 1458 | 18.50% | 7882 | 7939 | 37120 | 21.39% | |
| Chester | 4 | 22 | 1329 | 47.82% | 3 | 3 | 293 | 10.54% | 12 | 541 | 19.47% | 572 | 20.58% | 2779 | 2785 | 20171 | 13.81% | |
| Cherokee | 5 | 26 | 2898 | 42.13% | 7 | 2 | 1119 | 16.27% | 52 | 1301 | 18.92% | 1468 | 21.34% | 6878 | 6894 | 31493 | 21.89% | |
| Edgefield | 2 | 20 | 2103 | 60.28% | 2 | 1 | 293 | 8.40% | 11 | 645 | 18.49% | 412 | 11.81% | 3489 | 3500 | 15708 | 22.28% | |
| Abbeville | 2 | 16 | 1301 | 42.81% | 1 | 1 | 675 | 22.21% | 22 | 545 | 17.93% | 476 | 15.66% | 3039 | 3049 | 14586 | 20.90% | |
| Union | 2 | 14 | 1309 | 45.55% | 6 | 0 | 459 | 15.97% | 27 | 498 | 17.33% | 559 | 19.45% | 2874 | 2890 | 17464 | 16.55% | |
| 491 | 6338 | 244065 | 40.42% | 1173 | 211 | 78360 | 12.98% | 2534 | 168123 | 27.85% | 102475 | 16.97% | 603770 | 605623 | 2804231 | 21.60% |