| 17 | Extant Roller Coasters |
| 10 | Defunct Roller Coasters |
| 18 | Extant Amusement Parks |
| 2 | Defunct Amusement Parks |
| 0.86 | Roller Coasters per million people (RCMP) |
| 0.07 | Roller Coasters per 1000 km² |
| ジェットコースター | % | Population | RCMP | Area (km²) | Density | |
|---|---|---|---|---|---|---|
| Bucharest | 3 | 0.176471 | 1931838 | 1.552925 | 240.855762 | 12.455587 |
| Prahova | 1 | 0.058824 | 821013 | 1.218008 | 4705.358941 | 0.212524 |
| Ilfov | - | - | 294094 | - | 1560.680360 | - |
| Constanța | 2 | 0.117647 | 718330 | 2.784236 | 7040.562686 | 0.284068 |
| Alba | - | - | 376086 | - | 6228.285657 | - |
| Arad | - | - | 457713 | - | 7726.627603 | - |
| Argeș | - | - | 644236 | - | 6810.328990 | - |
| Bacău | - | - | 719844 | - | 6603.159125 | - |
| Bihor | 1 | 0.058824 | 594131 | 1.683130 | 7528.959140 | 0.132820 |
| Bistrița-Năsăud | - | - | 316689 | - | 5339.660925 | - |
| Botoșani | - | - | 454167 | - | 4971.215472 | - |
| Brăila | - | - | 365628 | - | 4756.091179 | - |
| Brașov | 1 | 0.058824 | 593928 | 1.683706 | 5351.670801 | 0.186858 |
| Buzău | - | - | 488763 | - | 6088.549225 | - |
| Călărași | - | - | 315187 | - | 5075.712334 | - |
| Caraș-Severin | - | - | 327579 | - | 8499.856987 | - |
| Cluj | 1 | 0.058824 | 692316 | 1.444427 | 6655.939254 | 0.150242 |
| Covasna | - | - | 223364 | - | 3700.033802 | - |
| Dâmbovița | - | - | 533330 | - | 4045.732673 | - |
| Dolj | - | - | 712187 | - | 7394.151212 | - |
| Galați | - | - | 614449 | - | 4455.697541 | - |
| Giurgiu | - | - | 283408 | - | 3537.737546 | - |
| Gorj | - | - | 381643 | - | 5572.016479 | - |
| Harghita | 7 | 0.411765 | 325611 | 21.498045 | 6633.331926 | 1.055277 |
| Hunedoara | - | - | 472284 | - | 7046.423936 | - |
| Ialomița | - | - | 290563 | - | 4445.343563 | - |
| Iași | - | - | 825100 | - | 5461.944307 | - |
| Maramureș | - | - | 513000 | - | 6287.037594 | - |
| Mehedinți | - | - | 298741 | - | 4940.965168 | - |
| Mureș | - | - | 581759 | - | 6696.831658 | - |
| Neamț | 1 | 0.058824 | 566059 | 1.766600 | 5875.447477 | 0.170200 |
| Olt | - | - | 475702 | - | 5494.467932 | - |
| Sălaj | - | - | 243157 | - | 3853.951006 | - |
| Satu Mare | - | - | 366270 | - | 4406.143422 | - |
| Sibiu | - | - | 423156 | - | 5419.683134 | - |
| Suceava | - | - | 705878 | - | 8529.038767 | - |
| Teleorman | - | - | 413064 | - | 5777.675350 | - |
| Timiș | - | - | 666866 | - | 8680.105355 | - |
| Tulcea | - | - | 250641 | - | 8451.580605 | - |
| Vâlcea | - | - | 411576 | - | 5753.042569 | - |
| Vaslui | - | - | 455594 | - | 5304.891633 | - |
| Vrancea | - | - | 392619 | - | 4845.297802 | - |