Census yrs.

Mountains

Hill

Mountain and Hill

Terai

Total

1971

1,138,610 (9.9)

6,071,407 (52.5)

7,210,017 (62.4)

4,345,966 (37.6)

11,555,983

1981

1,302,896 (8.7)

7,163,115 (45.5)

8,466,011 (56.4)

6,556,828 (43.6)

15,022,839

1991

1,443,130 (7.8)

8,419,889 (45.5)

9,863,019 (53.3)

8,628,078 (46.7)

18,491,097

2001

1,687,859 (7.3)

10,251,111 (44.3)

11,938,970 (51.6)

11,212,453 (48.4)

23,151,423

2011

1,781,792

11,394,007

13,175,799

13,318,705

26,494,504

(6.7)

(43.0)

(49.7)

(50.3)