Voter Demographics

Who can vote in 2027, by generation and age band: 2019 census age structure projected to election day, joined with the IEBC 2022 register.

Scope

Population (2019)

1,867,508

Registered voters (2022)

844,551

Voting-age by Aug 2027 (est.)

1,372,804

Gen-z eligible 2027 (est.)

620,398

45.2% of the 2027 voting-age est.

Gen-z (born 1997-2012)

620,398 eligible

≈ 381,670 of today's registered voters, if registration mirrors the age structure.

Youth (18-34 in 2027)

725,957

The bloc every 2027 campaign is chasing.

Millennials (born 1981-1996)

358,514

Peak-turnout generation in Kakamega.

Age structure · Kakamega

2019 census population by five-year band.

0-4

225,919

5-9

268,785

10-14

291,977

15-19

238,671

20-24

149,584

25-29

114,313

30-34

116,791

35-39

84,471

40-44

80,721

45-49

63,998

50-54

54,212

55-59

49,816

60-64

42,378

65-69

31,654

70-74

22,824

75-79

14,068

80-84

9,157

85-89

5,381

90-94

1,725

95-99

860

100+

203

Voters by constituency and ward · Kakamega

County age share (45.2%) applied to each seat's 2022 registered voters, an estimate, since sub-county age data isn't published.

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Estimated 2027 voting-age population by ward (county age share × 2022 register). Darker = more voting-age residents.

Methodology & sources

Age structure: KNBS 2019 Census (via OCHA COD-PS, data.humdata.org/dataset/cod-ps-ken), from the 2019 census county tables (KNBS via OCHA).
Registered voters: IEBC 2022 General Election register (per ward), the same figures behind every seat page here.
2027 projections age the census cohorts forward to August 2027 (whoever was N years old in 2019 is N+8), ignoring mortality and migration; treat them as estimates.
Gen-z = born 1997-2012; those born by August 2009 are eligible in 2027. Constituency and ward figures apply the county's age share to the seat's registered voters.
These are eligibility and registration figures, never turnout predictions.