Basque Country - Population
| Date | Density | Male | Female | Population |
|---|---|---|---|---|
| December 1974 | 275 | 985,202 | 1,004,537 | 1,989,739 |
| June 1974 | 273 | 977,669 | 997,125 | 1,974,794 |
| December 1973 | 271 | 970,123 | 989,721 | 1,959,844 |
| June 1973 | 269 | 962,185 | 982,244 | 1,944,430 |
| December 1972 | 267 | 954,588 | 975,044 | 1,929,631 |
| June 1972 | 265 | 946,323 | 967,293 | 1,913,616 |
| December 1971 | 262 | 938,171 | 959,619 | 1,897,790 |
| June 1971 | 260 | 930,454 | 952,164 | 1,882,618 |
| December 1970 | 258 | 922,653 | 944,621 | 1,867,274 |