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 |
|---|---|---|---|---|---|---|---|
| Mehedinți | 304788 | 304091 | 310021 | 322371 | 332091 | 306732 | 265390 |
| Sălaj | 262580 | 271989 | 263103 | 264569 | 266308 | 248015 | 224384 |
| Tulcea | 192228 | 223719 | 236709 | 254531 | 270197 | 256492 | 213083 |
| Covasna | 157166 | 172509 | 176858 | 199017 | 232592 | 222449 | 210177 |
| Total | 15872624 | 17489450 | 19103163 | 21559910 | 22760449 | 21680974 | 20121641 |