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)

1,136,144

Registered voters (2022)

532,758

Voting-age by Aug 2027 (est.)

865,482

Gen-z eligible 2027 (est.)

377,826

43.7% of the 2027 voting-age est.

Gen-z (born 1997-2012)

377,826 eligible

≈ 232,575 of today's registered voters, if registration mirrors the age structure.

Youth (18-34 in 2027)

440,318

The bloc every 2027 campaign is chasing.

Millennials (born 1981-1996)

217,030

Peak-turnout generation in Kitui.

Age structure · Kitui

2019 census population by five-year band.

0-4

126,190

5-9

144,472

10-14

173,446

15-19

151,148

20-24

88,720

25-29

67,509

30-34

68,691

35-39

56,678

40-44

51,344

45-49

47,652

50-54

33,819

55-59

29,704

60-64

25,004

65-69

22,627

70-74

19,456

75-79

10,519

80-84

8,916

85-89

4,480

90-94

3,578

95-99

1,438

100+

753

Voters by constituency and ward · Kitui

County age share (43.7%) 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.