| 18 | Extant Roller Coasters |
| 9 | Defunct Roller Coasters |
| 18 | Extant Amusement Parks |
| 2 | Defunct Amusement Parks |
| 0.91 | Roller Coasters per million people (RCMP) |
| 0.20 | Roller Coasters per 1000 sq mi |
| Location | Roller Coasters | % | Population | RCMP | Area (sq mi) | Density |
|---|---|---|---|---|---|---|
| Bucharest | 4 | 0.222222 | 1931838 | 2.070567 | 92.994930 | 43.013098 |
| Prahova | 1 | 0.055556 | 821013 | 1.218008 | 1816.749244 | 0.550434 |
| Ilfov | - | - | 294094 | - | 602.582056 | - |
| Constanța | 2 | 0.111111 | 718330 | 2.784236 | 2718.376450 | 0.735733 |
| Alba | - | - | 376086 | - | 2404.754536 | - |
| Arad | - | - | 457713 | - | 2983.267596 | - |
| Argeș | - | - | 644236 | - | 2629.482724 | - |
| Bacău | - | - | 719844 | - | 2549.493991 | - |
| Bihor | 1 | 0.055556 | 594131 | 1.683130 | 2906.947376 | 0.344003 |
| Bistrița-Năsăud | - | - | 316689 | - | 2061.654609 | - |
| Botoșani | - | - | 454167 | - | 1919.397024 | - |
| Brăila | - | - | 365628 | - | 1836.337070 | - |
| Brașov | 1 | 0.055556 | 593928 | 1.683706 | 2066.291648 | 0.483959 |
| Buzău | - | - | 488763 | - | 2350.801998 | - |
| Călărași | - | - | 315187 | - | 1959.743488 | - |
| Caraș-Severin | - | - | 327579 | - | 3281.813130 | - |
| Cluj | 1 | 0.055556 | 692316 | 1.444427 | 2569.872513 | 0.389124 |
| Covasna | - | - | 223364 | - | 1428.591038 | - |
| Dâmbovița | - | - | 533330 | - | 1562.066118 | - |
| Dolj | - | - | 712187 | - | 2854.897743 | - |
| Galați | - | - | 614449 | - | 1720.354438 | - |
| Giurgiu | - | - | 283408 | - | 1365.928103 | - |
| Gorj | - | - | 381643 | - | 2151.367590 | - |
| Harghita | 7 | 0.388889 | 325611 | 21.498045 | 2561.143775 | 2.733154 |
| Hunedoara | - | - | 472284 | - | 2720.639492 | - |
| Ialomița | - | - | 290563 | - | 1716.356745 | - |
| Iași | - | - | 825100 | - | 2108.868487 | - |
| Maramureș | - | - | 513000 | - | 2427.438786 | - |
| Mehedinți | - | - | 298741 | - | 1907.717316 | - |
| Mureș | - | - | 581759 | - | 2585.661159 | - |
| Neamț | 1 | 0.055556 | 566059 | 1.766600 | 2268.522953 | 0.440815 |
| Olt | - | - | 475702 | - | 2121.425929 | - |
| Sălaj | - | - | 243157 | - | 1488.018802 | - |
| Satu Mare | - | - | 366270 | - | 1701.221486 | - |
| Sibiu | - | - | 423156 | - | 2092.551357 | - |
| Suceava | - | - | 705878 | - | 3293.080278 | - |
| Teleorman | - | - | 413064 | - | 2230.772924 | - |
| Timiș | - | - | 666866 | - | 3351.407414 | - |
| Tulcea | - | - | 250641 | - | 3263.173515 | - |
| Vâlcea | - | - | 411576 | - | 2221.262154 | - |
| Vaslui | - | - | 455594 | - | 2048.230110 | - |
| Vrancea | - | - | 392619 | - | 1870.779940 | - |