フィンランドの宗教 
| 宗教別人口 (%) | |||||
|---|---|---|---|---|---|
| 年 | ルーテル派 | ロシア正教 | その他 | 無宗教 | 不 明 |
| 1900 | 98.1 | 1.7 | 0.2 | — | — |
| 1920 | 98.1 | 1.6 | 0.3 | 0.03 | — |
| 1950 | 95.1 | 1.7 | 0.4 | 2.7 | 0.1 |
| 1980 | 90.3 | 1.1 | 0.7 | 7.8 | 0.1 |
| 1990 | 87.9 | 1.1 | 0.9 | 10.2 | 0.0 |
| 1995 | 85.8 | 1.1 | 1.0 | 12.1 | 0.0 |
| 1996 | 85.7 | 1.1 | 1.0 | 12.2 | 0.0 |
| 1997 | 85.6 | 1.1 | 1.0 | 12.3 | 0.0 |
| 1998 | 85.4 | 1.1 | 1.1 | 12.4 | 0.0 |
| 1999 | 85.3 | 1.1 | 1.0 | 12.6 | 0.0 |
| 2000 | 85.1 | 1.1 | 1.1 | 12.7 | 0.0 |
| 2001 | 84.9 | 1.1 | 1.1 | 12.9 | 0.0 |
| 2002 | 84.6 | 1.1 | 1.1 | 13.1 | 0.0 |
| 2003 | 84.2 | 1.1 | 1.2 | 13.5 | 0.0 |
| 2004 | 83.8 | 1.1 | 1.1 | 14.0 | 0.0 |
| 2005 | 83.1 | 1.1 | 1.1 | 14.7 | 0.0 |