Table 30.— Population data^ 



Col\i»bla RlTgr Basin 



Stat« ia 

 ProTlnce 



1920 



1930 



MbO 



55,ooo''' 75,aoo'" 



1950 



British Col. 



Mont«ns 



Idaho 



Waahln^on 



Oregon 



100,517 



iiiS,62e 



217,316 



3ii8,10li 



•ly. Dtah,lll«». 1,972 



lljO.OBO 

 302,695 

 U5L.51i7 

 568,6U 

 9,369 



85,731i 

 lS6,li76 

 U03,ie6 

 501,529 

 663,299 

 6,190 



103,5U< 

 156,993 

 la7,667 

 553.809 

 778,67li 

 6,300 



121,216 

 172,519 

 197,139 

 635,673 

 882,9U 

 9,760 



Total 668,737 1,550,332 1,818, Ulli 2,018,987 2,319,251 



Total State and Prorlnce Population 



British Col. 



Montana 



Idaho 



Washington 



Wyoming 



Dtah 



Nevada 



Oregon 



178,657 

 2I»3,329 

 161,772 

 518,103 



92,=;31 

 376,7li9 



U2.335 

 Iil3,536 



392,liBO 

 376,053 

 325,59U 

 ,mi,990 

 11.5,965 

 373,351 

 81,875 

 672,765 



52li,582 

 5I.8,8P,9 

 li31,866 

 1,356,621 

 19li,L02 

 IJi9,396 

 77,li07 

 783,389 



69l<,263 

 537,606 

 lili5,032 

 1,563,396 

 225,565 

 507,81,7 

 91,058 

 953,786 



617,861 

 559,U56 

 521i,873 



1,736,191 

 250,7li2 

 550,310 

 llD,21i7 



l,069,681i 



Total 2,027,102 3,510,073 ^,366,552 5,008,553 5,639, 361i 



165,37li 

 185,730 

 569,069 

 656,681. 

 1,506,600 

 I1,65U 



3,297,131 



1,165,210 

 591,02U 

 588,637 



2,378,963 

 290,529 

 688,862 

 160,063 



l,521,3la 



7,381i,6U9 



Cities oyer 100 Total Population by Dralna^^e Bajla 



Col. R. above Od. Couloe Daiii-26 cities 222,601 21i6,26o 269,195 328,7lj2 



Col. P. above Snake R.toC.C. 26 cities 61,865 77,299 89,li78 I65,91i0 



(laklna P. Basin - 12 cities) 37,3li9 la,977 50,695 73,81i3 



(Snake P. Basin . Ii6 cities) 153,805 I59,81i6 201,173 26l,,256 



Col. P., Snake R. to the Dallas-SA cities 190,719 200,067 250,2li8 327,li79 



" ", Dalles to the Mouth liJ cities 379,li72 Uili,138 li95,091 672,la3 



Total 150 Cities 



1,01,5, 8U 1,1W,584 i,i55,886 i,B3J,6t3 



1. ?roni references 3, 6, 29, 30, 31 and hi 



2. British Columbia dale for 1901, 1911, 1921, 1931, .19la and 1951 



3. Estijnated for British Columbia - data not available. 



POPULATION GROWTH AND PREDICTION 

 FIG. 62 

 92 



