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)

1,266,800

Registered voters (2022)

637,010

Voting-age by Aug 2027 (est.)

951,343

Gen-z eligible 2027 (est.)

407,069

42.8% of the 2027 voting-age est.

Gen-z (born 1997-2012)

407,069 eligible

≈ 272,569 of today's registered voters, if registration mirrors the age structure.

Youth (18-34 in 2027)

484,508

The bloc every 2027 campaign is chasing.

Millennials (born 1981-1996)

274,352

Peak-turnout generation in Kisii.

Age structure · Kisii

2019 census population by five-year band.

0-4

143,507

5-9

171,950

10-14

195,386

15-19

150,167

20-24

102,526

25-29

91,072

30-34

93,680

35-39

60,737

40-44

53,618

45-49

47,900

50-54

29,508

55-59

38,615

60-64

30,711

65-69

21,529

70-74

15,544

75-79

7,877

80-84

6,141

85-89

3,694

90-94

1,489

95-99

758

100+

391

Voters by constituency and ward · Kisii

County age share (42.8%) applied to each seat's 2022 registered voters, an estimate, since sub-county age data isn't published.

Loading map…

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.