1840 Federal Census
| 1840 | 1850 | 1860 | 1870 |
| 1880 | 1890 | 1900 | 1910 |
| 1920 | 1930 | 1940 | Other |
| 1840 Federal Census | ||||
| County & Division | Links | NARA Roll | Transcription Status |
Proofreader Status |
| Cedar | M704-101 |
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| Clayton | M704-101 |
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| Clinton | M704-101 |
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| Delaware | M704-101 | |||
| Des Moines | M704-101 | |||
| Dubuque | M704-101 | |||
| Henry | M704-101 | |||
| Jackson | M704-102 | |||
| Jefferson | M704-101 | |||
| Johnson | M704-101 | |||
| Jones | M704-102 | |||
| Lee | Index | M704-102 |
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| Linn | M704-102 | |||
| Louisa | M704-102 | |||
| Muscatine | Images | M704-102 | ||
| Scott | Index | M704-102 |
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| Van Buren | M704-102 | Assigned to: Rich Lowe |
Available For 2nd Transcription |
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| Washington | M704-102 | |||