Flitt Hundred covered the southeast corner of the country and was bordered by Manshead Hundred on the west, Redbornstoke on the northwest and Clifton on the northeast.
The hundreds of Bedfordshire are displayed on a map by George Carrington Gray first published in Gray's Book of Roads and reproduced in Wikimedia Commons.
List of Parishes with chapelries and townships
Ancient Parish | Parish Status | Subsidiary Places | Subsidiary Place Status | Notes
| Barton in the Clay | parish (ancient), civil parish | none | |
| Caddington | parish (ancient), civil parish | none | |
| Clophill | parish (ancient), civil parish | none | |
| Flitton | parish (ancient), civil parish | Silsoe | hamlet, civil parish |
| Haynes | parish (ancient), civil parish | none | |
| Higham Gobion | parish (ancient), civil parish | none | |
| Lower Gravenhurst | parish (ancient), civil parish | none | |
| Luton | parish (ancient), civil parish | Biscot | hamlet |
| | | Leagrave | hamlet, civil parish |
| | | Limbury | hamlet, civil parish |
| | | Stopsley | hamlet, civil parish |
| | | West Hyde | hamlet, civil parish |
| Pulloxhill | parish (ancient), civil parish | none | |
| Shillington | parish (ancient), civil parish | Upper Gravenhurst | chapelry, parish (ancient), civil parish |
| Streatley | parish (ancient), civil parish | none | |
| Sundon | parish (ancient), civil parish | none | |
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