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)

1,117,781

Registered voters (2022)

463,273

Voting-age by Aug 2027 (est.)

815,858

Gen-z eligible 2027 (est.)

302,291

37.1% of the 2027 voting-age est.

Gen-z (born 1997-2012)

302,291 eligible

≈ 171,652 of today's registered voters, if registration mirrors the age structure.

Youth (18-34 in 2027)

395,880

The bloc every 2027 campaign is chasing.

Millennials (born 1981-1996)

318,973

Peak-turnout generation in Kajiado.

Age structure · Kajiado

2019 census population by five-year band.

0-4

156,328

5-9

145,595

10-14

129,632

15-19

101,368

20-24

118,819

25-29

115,153

30-34

99,833

35-39

70,574

40-44

53,333

45-49

41,039

50-54

28,824

55-59

19,622

60-64

13,927

65-69

8,721

70-74

6,792

75-79

3,398

80-84

2,304

85-89

1,238

90-94

638

95-99

382

100+

261

Voters by constituency and ward · Kajiado

County age share (37.1%) 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.