Iowa - Population
| Date | Density | Population |
|---|---|---|
| 1946 | 17 | 2,467,000 |
| 1945 | 16 | 2,301,000 |
| 1944 | 16 | 2,294,000 |
| 1943 | 16 | 2,332,000 |
| 1942 | 17 | 2,441,000 |
| 1941 | 17 | 2,491,000 |
| 1940 | 17 | 2,537,000 |
| 1939 | 17 | 2,520,000 |
| 1938 | 17 | 2,494,000 |
| 1937 | 17 | 2,498,000 |
| 1936 | 17 | 2,509,000 |
| 1935 | 17 | 2,524,000 |
| 1934 | 17 | 2,510,000 |
| 1933 | 17 | 2,495,000 |
| 1932 | 17 | 2,489,000 |
| 1931 | 17 | 2,482,000 |
| 1930 | 17 | 2,475,000 |
| 1929 | 17 | 2,460,000 |