This family appears to be listed twice in the 1850 Federal Census, at both Warwick, RI (5 Sep); and Scituate, RI (20 Sep) -- except George, who is already married, is not listed at Scituate.
Warwick, 1850:
Thomas Remmington 42
Almira Remmington 42
George Remmington 20
Abby Remmington 18
Henry Remmington 16
Horace Remmington 13
Andrew Remmington 12
John Remmington 9
Scituate, 1850 (ancestry has mis-transcribed the surname, but the image shows Remington):
Thomas Kennington 41
Almira Kennington 41
Abby Kennington 18
Henry Kennington 16
Albert Kennington 12
Horace Kennington 9
Andrew J Kennington 6
John H Kennington 4
George is listed separately at Warick, with his wife and child:
George T Remmington 20
Betsey P Remmington 26
Byron D Remmington 1
It must be the same family, because most of the names are the same, as are the ages -- with slight differences for three of the children.
Perhaps they were living at Warwick with (or next to) Susan Remington but in that month moved to Scituate.