Provinces

1969

1979

1989

1999

2009

Nairobi

509,286

827,775

1,324,570

2,143,254

3,138,369

C. Province

1,675,647

2,345,833

3,116,703

3,724,159

4,383,743

Coast Province

944,082

1,342,794

1,829,191

2,487,264

3,325,307

E. Province

1,907,301

2,719,851

3,768,677

4,631,779

5,668,123

N.E. Province

245,757

373,787

371,391

962,143

2,310,757

Nyanza

2,122,045

2,643,956

3,507,162

4,392,196

5,442,711

R. Valley

2,210,289

3,240,402

4,981,613

6,987,036

10,006,805

W. Province

1,328,298

1,832,663

2,544,329

3,358,776

4,334,202

Total Population

10,942,705

15,327,061

21,443,636

28,686,607

38,610,097