1840 census of Morgan Co., Ky, lists on p. 27, line 18:
James Eldridge: 1 male 20-29, 1 female 20-29; 2 males under 5.

Neighbors are David Hamilton and Job Cotton. The family of Jesse Eldridge is 11 lines below.

1850 census of Morgan Co., Ky, enumerated 29 Aug, lists on p. 76 as family #484:
James Eldridge, 38, farmer, b. Ky; Jane, 36, b. Va; Jesse, 13; Joshua, 11; Isaac, 9; Samuel, 7; Nancy, 5; Mary, 1. All children born in Kentucky.

1860 census of Morgan Co., Ky, district 1, West Liberty P.O., enumerated 26 July, lists on pp. 100-101 as family #626/620:
James Eldridge, 50, farmer; Jane, 48; Jesse, 23; Isaac, 19; Samuel, 16; Nancy, 14; Sally, 12. Ellender Cotton, 29; Reuben, 8. The birth place field for Jane and Jesse is blank, for everyone else it is Kentucky.

Sally may be the same daughter listed as Mary age 1 in 1850. On the other hand, since she is recorded as Sarah age 19 in the 1870 census, it may be that Mary died young, and Sally’s age is off by a couple years here.

1870 census of Elliott Co., Ky, precinct 1, Sandy Hook P.O., enumerated 23 June, lists on p. 32 as family #186:
Eldridge, James, 60, farmer, b. Ky; Jane, 56, b. Tenn; William, 35; Sarah, 19. Cotton, Jane, 11. All except Jane born in Ky.

The preceding household is headed by their son Jesse. The next household is headed by Stephen Lewis, who is married to their daughter Nancy. The household after that is headed by their son Isaac. And household #190 is headed by Joshua Eldridge, age 52.

1880 census of Elliott Co., Ky, Newcombe precinct, enumerated 14 June, lists on p. 14 as family #108/110:
Eldridge, Isaac, 39, widowed, farmer, b. Ky Va Va; Verlillia, 13, dau; Andrew J., 9, son; Cora, 6, dau; James M., 4, son. James, 71, father, b. Va N.C. N.C.; Jane, 68, mother, born Tenn unknown unknown.

The preceding household is headed by Stephen Lewis and Nancy Eldridge.