List of Romanian counties by population List of Romanian counties by population List of Romanian counties by population

| County | _1948 | _1956 | _1966 | _1977 | _1992 | _2002 | _2011 |
|---|---|---|---|---|---|---|---|
| Brașov | 300836 | 373941 | 442692 | 582863 | 642513 | 589028 | 549217 |
| Galați | 341797 | 396138 | 474279 | 581561 | 639853 | 619556 | 536167 |
| Dâmbovița | 409272 | 438985 | 453241 | 527620 | 559874 | 541763 | 518745 |
| Maramureș | 321287 | 367114 | 427645 | 492860 | 538534 | 510110 | 478659 |
| Neamț | 357348 | 419949 | 470206 | 532096 | 577619 | 554516 | 470766 |
| Buzău | 430225 | 465829 | 480951 | 508424 | 516307 | 496214 | 451069 |
| Olt | 442442 | 458982 | 476513 | 518804 | 520966 | 489274 | 436400 |
| Arad | 476207 | 475620 | 481248 | 512020 | 487370 | 461791 | 430629 |
| Hunedoara | 306955 | 381902 | 474602 | 514436 | 547993 | 485712 | 418565 |
| Botoșani | 385236 | 428050 | 452406 | 451217 | 458904 | 452834 | 412626 |
| Sibiu | 335116 | 372687 | 414756 | 481645 | 452820 | 421724 | 397322 |
| Vaslui | 344917 | 401626 | 431555 | 437251 | 457799 | 455049 | 395499 |
| Ilfov | 167533 | 196265 | 229773 | 287738 | 286510 | 300123 | 388738 |