| Bucureşti - Ilfov Development Region | | 1,821 | 2,226,457 | 2,225,932 |
| Ilfov, Judeţul | - | 1,583 | 300,123 | 294,094 |
| Bucureşti, Municipiul | Bucureşti | 238 | 1,926,334 | 1,931,838 |
| Centru Development Region | | 34,100 | 2,523,021 | 2,523,904 |
| Alba, Judeţul | Alba Iulia | 6,242 | 382,747 | 376,086 |
| Braşov, Judeţul | Braşov | 5,363 | 589,028 | 593,928 |
| Covasna, Judeţul | Sfantu-Gheorghe | 3,710 | 222,449 | 223,364 |
| Harghita, Judeţul | Miercurea-Ciuc | 6,639 | 326,222 | 325,611 |
| Mureş, Judeţul | Tirgu Mures | 6,714 | 580,851 | 581,759 |
| Sibiu, Judeţul | Sibiu | 5,432 | 421,724 | 423,156 |
| Nord-Est Development Region | | 36,850 | 3,674,367 | 3,726,642 |
| Bacău, Judeţul | Bacău | 6,621 | 706,623 | 719,844 |
| Botoşani, Judeţul | Botoşani | 4,986 | 452,834 | 454,167 |
| Iaşi, Judeţul | Iaşi | 5,476 | 816,910 | 825,100 |
| Neamţ, Judeţul | Piatra Neamt | 5,896 | 554,516 | 566,059 |
| Suceava, Judeţul | Suceava | 8,553 | 688,435 | 705,878 |
| Vaslui, Judeţul | Vaslui | 5,318 | 455,049 | 455,594 |
| Nord-Vest Development Region | | 34,159 | 2,740,064 | 2,725,563 |
| Bihor, Judeţul | Oradea | 7,544 | 600,246 | 594,131 |
| Bistriţa-Năsăud, Judeţul | Bistrita | 5,355 | 311,657 | 316,689 |
| Cluj, Judeţul | Cluj-Napoca | 6,674 | 702,755 | 692,316 |
| Maramureş, Judeţul | Baia Mare | 6,304 | 510,110 | 513,000 |
| Sâlaj, Judeţul | Zalau | 3,864 | 248,015 | 243,157 |
| Satu-Mare, Judeţul | Satu Mare | 4,418 | 367,281 | 366,270 |
| Sud-Est Development Region | | 35,762 | 2,848,219 | 2,830,430 |
| Brăila, Judeţul | Brăila | 4,766 | 373,174 | 365,628 |
| Buzău, Judeţul | Buzău | 6,103 | 496,214 | 488,763 |
| Constanţa, Judeţul | Constanţa | 7,071 | 715,151 | 718,330 |
| Galaţi, Judeţul | Galaţi | 4,466 | 619,556 | 614,449 |
| Tulcea, Judeţul | Tulcea | 8,499 | 256,492 | 250,641 |
| Vrancea, Judeţul | Focsani | 4,857 | 387,632 | 392,619 |
| Sud-Muntenia Development Region | | 34,453 | 3,379,406 | 3,300,801 |
| Argeş, Judeţul | Pitesti | 6,826 | 652,625 | 644,236 |
| Călăraşi, Judeţul | Călăraşi | 5,088 | 324,617 | 315,187 |
| Dâmboviţa, Judeţul | Tirgoviste | 4,054 | 541,763 | 533,330 |
| Giurgiu, Judeţul | Giurgiu | 3,526 | 297,859 | 283,408 |
| Ialomiţa, Judeţul | Slobozia | 4,453 | 296,572 | 290,563 |
| Prahova, Judeţul | Ploiesti | 4,716 | 829,945 | 821,013 |
| Teleorman, Judeţul | Alexandria | 5,790 | 436,025 | 413,064 |
| Sud-Vest Oltenia Development Region | | 29,212 | 2,330,792 | 2,279,849 |
| Dolj, Judeţul | Craiova | 7,414 | 734,231 | 712,187 |
| Gorj, Judeţul | Tirgu-Jiu | 5,602 | 387,308 | 381,643 |
| Mehedinţi, Judeţul | Drobeta-Turnu Severin | 4,933 | 306,732 | 298,741 |
| Olt, Judeţul | Slatina | 5,498 | 489,274 | 475,702 |
| Vâlcea, Judeţul | Rimnicu Vilcea | 5,765 | 413,247 | 411,576 |
| Vest Development Region | | 32,034 | 1,958,648 | 1,924,442 |
| Arad, Judeţul | Arad | 7,754 | 461,791 | 457,713 |
| Caraş-Severin, Judeţul | Resita | 8,520 | 333,219 | 327,579 |
| Hunedoara, Judeţul | Deva | 7,063 | 485,712 | 472,284 |
| Timiş, Judeţul | Timisoara | 8,697 | 677,926 | 666,866 |
| total | | 238,391 | 21,680,974 | 21,584,365 |