Census population and smallest geographical units for the five European countries
| Total population | Year of Census | Smallest geographical unit | Average population per unit | Number of units | |
|---|---|---|---|---|---|
| France | 58 500 000 | 1999 | IRIS | 2000 | 50 000 |
| Italy | 57 000 000 | 2001 | Census tracts | 170 | 352 205 |
| Portugal | 10 500 000 | 2001 | Census tract block groups | 640 | 16 090 |
| Spain | 40 850 000 | 2001 | Census tracts | 1000 | 34 300 |
| England | 59 950 000 | 2001 | LSOA | 1500 | 34 400 |
IRIS, aggregated units for statistical information; LSOA, Lower Super Output Areas.