County profile
Kiambu County
People. Elections. Representation. Public money.
People & places
Largest first; equal values share a rank. County registers exclude diaspora. Select a measure for its source. The 2022 population is KNBS's projection for that year, carried forward from the 2019 census — an estimate, not a count. 2,417,735 residents were counted here in 2019.
County outline. Constituency boundary polygons are not held; the list opens each constituency.
Registering for 2027
Across the whole country 2,936,516 people had newly registered as voters as at Aug. 20, 2026. It already includes the county figure above and is never added to it. Continuous voter registration has run since Sept. 29, 2025.
There is no 2027 register yet — IEBC de-duplicates, audits and gazettes one first — so these cannot simply be added to the 2022 figure above.
Dates, scope & source
Enhanced Continuous Voter Registration, Phase 1, run from March 30, 2026 to April 28, 2026. Figures are IEBC's own, stated as of April 28, 2026.
Newly registered voters only. IEBC prints transfers of registration (19,670) and changes of particulars (424) in the same table; neither is a new voter and neither is added here.
The figure is IEBC's; describing it as new registrations rather than the register is ours, and the release's own sentence states no scope and no window.
Registered voters · 2017 to 2027
Between the registers held · 2017–2022
How this is worked out
Both figures compare the same county in the two registers we hold. Percentage change = (2022 count − 2017 count) ÷ 2017 count × 100. Ranks cover only counties with a register in both years. These are registrations, not votes cast.
Bars are scaled against the largest register this county itself holds, and start at zero. A year with no register held shows no bar rather than a zero.
Explore constituencies
- Ruiru
- Thika Town
- Juja
- Githunguri
- Kiambaa
- Kikuyu
- Limuru
- Kabete
- Kiambu
- Lari
- Gatundu South
- Gatundu North
Age profile & sources
People & the register · Kiambu
Years, scope & sources
² KNBS Volume XVI, Appendix 5: the population KNBS projects for 2022, carried forward from the 2019 census. It is an estimate of how many people live here, not a count of people enumerated. 2,417,735 residents were actually counted in 2019 — KNBS Volume I, Table 2.4, all persons.
The adult figure stays on 2019 because no projected one exists: Volume XVI prints five-year age bands, so 18 falls inside 15–19 and no voting-age figure is published at county level for any year. Splitting that band here would be inventing a number KNBS has not published.
¹ KNBS Volume III, Table 2.3: population distributed by age and sex; excludes the intersex population, so it sums lower than the headcount above. The adult count is aged 18+ on census night in 2019 — Volume I prints no age breakdown, so the adults figure can only come from this table. The register counts registrations in 2022, not ballots cast.
127,067 residents were aged 15–17 in 2019. Ageing, migration and the different dates can affect this comparison. This is not a registration rate. KNBS sub-counties are not constituencies; this comparison applies at county level.
Representatives
Who speaks for Kiambu in Parliament.
2022 election — who won here
Declared winners from the IEBC Kenya Gazette.
County-wide winners · 2022
GovernorKimani Wamatangi PaulUDA · 348,371 votesGazette 9949
SenatorThangwa Paul KarungoUDA · 579,411 votesGazette 9955
Woman RepresentativeMuratha Anne Wanjiku MugoUDA · 405,492 votesGazette 9951
Constituencies & registered voters
- Ruiru
- Thika Town
- Juja
- Githunguri
- Kiambaa
- Kikuyu
- Limuru
- Kabete
- Kiambu
- Lari
- Gatundu South
- Gatundu North
Constituency winners · 2022
Gatundu NorthKururia Elijah Njore NjorogeIND · 15,224 votesGazette 9950
Gatundu SouthKagombe Gabriel GathukaUDA · 17,815 votesGazette 9950
GithunguriWamuchomba GathoniUDA · 34,646 votesGazette 9950
JujaNdung’u George KoimburiUDA · 39,413 votesGazette 9950
KabeteWamacukuru James Githua KamauUDA · 49,424 votesGazette 9950
KiambaaWanjiku John NjugunaUDA · 41,239 votesGazette 9950
KiambuWaithaka John MachuaUDA · 26,399 votesGazette 9950
KikuyuIchung’wah Anthony KimaniUDA · 48,018 votesGazette 9950
LariKahangara Joseph MburuUDA · 26,702 votesGazette 9950
LimuruChege John KiraguUDA · 33,906 votesGazette 9950
RuiruKingara Simon Ng’ang’aUDA · 68,045 votesGazette 9950
Thika TownNg'ang'a Alice WambuiUDA · 59,575 votesGazette 9950
County Assembly (MCA) winners — 60 wards
- Kamenu · Mungai Peter Mburu 19,899 UDA
- Township · Wanjiru Francis Koina 12,331 UDA
- Township · Kimani Kennedy Kentams Mwangi 10,538 UDA
- Limuru Central · Nduta Josephine Muongi 9,971 UDA
- Githunguri · Kamau Joseph Muhinja 9,915 UDA
Show the other 55 of 60, same scale
- Theta · Munana Moses Muiruri 9,759 UDA
- Mwiki · Anampiu Donna Kendi 9,569 UDA
- Biashara · Nduta Kimani 9,388 JIBEBE
- Sigona · Munyaka Naphtaly Ngugi 9,384 UDA
- Kijabe · Wamwere Stephen Nyutu 9,235 UDA
- Juja · Mwangi Jeremiah Kiama 8,660 CCK
- Ndenderu · Wanjiru David Mwaura 7,517 UDA
- Hospital · Njue John Njiru 7,457 UDA
- Witeithie · Ngugi Patrick Mwiberi 7,170 UDA
- Githiga · Wanjiku Ruth Waithira 7,008 UDA
- Kikuyu · Kamau James Boro 6,851 UDA
- Muguga · Thumbi Peter Kamau 6,818 UDA
- Kalimoni · Mucheke Godffrey Waiyaki 6,681 UDA
- Muchatha · Kamau Kenneth Karanja 6,674 UDA
- Bibirioni · Kamau Christopher Ireri 6,426 UDA
- Nyanduma · Chege Beth Wanjiku 6,386 UDA
- Kiuu · Mbugua Zacharia Macharia United Democratic Alliance 6,341 UDA
- Nachu · Kimani George Njoroge 6,327 UDA
- Ngecha-Tigoni · Ngaruiya Patrick Kimani 6,201 UDA
- Ndarugu · Ndiba John Njinu 6,167 UDA
- Chania · Kibuu Joseph Mwangi 6,131 UDA
- Kinale · Kiranga Dominic Mbugua 5,624 UDA
- Karuri · Wainaina Peter Njoroge 5,605 JIBEBE
- Mangu · Mburu Patrick Mwangi 5,483 UDA
- Kinoo · Kimani Evanson Muigu 5,333 UDA
- Gitaru · Karanja Jane Thogori 5,245 UDA
- Nyadhuna · Ngugi Edward Kinyanjui 5,135 UDA
- Karai · Kimani Samuel Njoroge Icembe 5,072 UDA
- Ndeiya · Mbuiyu Nelson Munga 4,997 UDA
- Ndumberi · Nyokabi David Chogi 4,891 UDA
- Ngewa · Gitau Charles Kangethe 4,886 UDA
- Kihara · Muthondu John Ngure 4,468 JP
- Gitothua · Kamande John Njogu 4,459 UDA
- Gituamba · Wanyiri Francis Murima 4,437 UDA
- Ngenda · Kigara Joe Githui 4,327 JP
- Riabai · Gachui Hezron Mwangi 4,327 UDA
- Kiamwangi · Wanjiku Kungu Smart 4,323 JIBEBE
- Murera · Wambiri Moses Ngatha 4,308 UDA
- Uthiru · Ndungu Erick Warugu 3,977 UDA
- Ikinu · Thuo Cedric Gachunga 3,925 UDA
- Limuru East · Wambui Paul Macharia 3,925 UDA
- Kabete · Hinga Grace 3,720 UDA
- Komothai · Wanyutu Waweru 3,591 CCK
- Cianda · Kienjeku Joseph Koigi 3,546 UDA
- Kahawa Wendani Sinne · Brian Simiyu United Democratic Alliance 3,504 UDA
- Ting’ang’a · Mwaura Lawrence 3,465 JIBEBE
- Kiganjo · Waweru Julius Kahura 3,357 IND
- Gatongora · Kuria Daniel Gitau 3,317 UDA
- Lari/Kirenga · Githing’a Josphat Kinyanjui 3,248 IND
- Kamburu · Wainaina Samuel Mbeere 2,836 IND
- Mwihoko · Gikanga George Ng’ang’a 2,690 CCK
- Githobokoni · Munyua Moses Kiarie 2,522 UDA
- Gatuanyaga · Jackma Jackson Karanja Kungu 2,521 UDA
- Ngoliba · Njama Joachim Mwangi 2,280 JP
- Kahawa / Sukari Obudho · Kennedy Odhiambo Jubilee Party 2,101 JP
Show all 60 wards as a table
| Ward | Constituency | Winner | Party | Votes |
|---|---|---|---|---|
| Chania | Gatundu North | Kibuu Joseph Mwangi | UDA | 6,131 |
| Githobokoni | Gatundu North | Munyua Moses Kiarie | UDA | 2,522 |
| Gituamba | Gatundu North | Wanyiri Francis Murima | UDA | 4,437 |
| Mangu | Gatundu North | Mburu Patrick Mwangi | UDA | 5,483 |
| Kiamwangi | Gatundu South | Wanjiku Kungu Smart | JIBEBE | 4,323 |
| Kiganjo | Gatundu South | Waweru Julius Kahura | IND | 3,357 |
| Ndarugu | Gatundu South | Ndiba John Njinu | UDA | 6,167 |
| Ngenda | Gatundu South | Kigara Joe Githui | JP | 4,327 |
| Githiga | Githunguri | Wanjiku Ruth Waithira | UDA | 7,008 |
| Githunguri | Githunguri | Kamau Joseph Muhinja | UDA | 9,915 |
| Ikinu | Githunguri | Thuo Cedric Gachunga | UDA | 3,925 |
| Komothai | Githunguri | Wanyutu Waweru | CCK | 3,591 |
| Ngewa | Githunguri | Gitau Charles Kangethe | UDA | 4,886 |
| Juja | Juja | Mwangi Jeremiah Kiama | CCK | 8,660 |
| Kalimoni | Juja | Mucheke Godffrey Waiyaki | UDA | 6,681 |
| Murera | Juja | Wambiri Moses Ngatha | UDA | 4,308 |
| Theta | Juja | Munana Moses Muiruri | UDA | 9,759 |
| Witeithie | Juja | Ngugi Patrick Mwiberi | UDA | 7,170 |
| Gitaru | Kabete | Karanja Jane Thogori | UDA | 5,245 |
| Kabete | Kabete | Hinga Grace | UDA | 3,720 |
| Muguga | Kabete | Thumbi Peter Kamau | UDA | 6,818 |
| Nyadhuna | Kabete | Ngugi Edward Kinyanjui | UDA | 5,135 |
| Uthiru | Kabete | Ndungu Erick Warugu | UDA | 3,977 |
| Cianda | Kiambaa | Kienjeku Joseph Koigi | UDA | 3,546 |
| Karuri | Kiambaa | Wainaina Peter Njoroge | JIBEBE | 5,605 |
| Kihara | Kiambaa | Muthondu John Ngure | JP | 4,468 |
| Muchatha | Kiambaa | Kamau Kenneth Karanja | UDA | 6,674 |
| Ndenderu | Kiambaa | Wanjiru David Mwaura | UDA | 7,517 |
| Ndumberi | Kiambu | Nyokabi David Chogi | UDA | 4,891 |
| Riabai | Kiambu | Gachui Hezron Mwangi | UDA | 4,327 |
| Ting’ang’a | Kiambu | Mwaura Lawrence | JIBEBE | 3,465 |
| Township | Kiambu | Wanjiru Francis Koina | UDA | 12,331 |
| Karai | Kikuyu | Kimani Samuel Njoroge Icembe | UDA | 5,072 |
| Kikuyu | Kikuyu | Kamau James Boro | UDA | 6,851 |
| Kinoo | Kikuyu | Kimani Evanson Muigu | UDA | 5,333 |
| Nachu | Kikuyu | Kimani George Njoroge | UDA | 6,327 |
| Sigona | Kikuyu | Munyaka Naphtaly Ngugi | UDA | 9,384 |
| Kamburu | Lari | Wainaina Samuel Mbeere | IND | 2,836 |
| Kijabe | Lari | Wamwere Stephen Nyutu | UDA | 9,235 |
| Kinale | Lari | Kiranga Dominic Mbugua | UDA | 5,624 |
| Lari/Kirenga | Lari | Githing’a Josphat Kinyanjui | IND | 3,248 |
| Nyanduma | Lari | Chege Beth Wanjiku | UDA | 6,386 |
| Bibirioni | Limuru | Kamau Christopher Ireri | UDA | 6,426 |
| Limuru Central | Limuru | Nduta Josephine Muongi | UDA | 9,971 |
| Limuru East | Limuru | Wambui Paul Macharia | UDA | 3,925 |
| Ndeiya | Limuru | Mbuiyu Nelson Munga | UDA | 4,997 |
| Ngecha-Tigoni | Limuru | Ngaruiya Patrick Kimani | UDA | 6,201 |
| Biashara | Ruiru | Nduta Kimani | JIBEBE | 9,388 |
| Gatongora | Ruiru | Kuria Daniel Gitau | UDA | 3,317 |
| Gitothua | Ruiru | Kamande John Njogu | UDA | 4,459 |
| Kahawa / Sukari Obudho | Ruiru | Kennedy Odhiambo Jubilee Party | JP | 2,101 |
| Kahawa Wendani Sinne | Ruiru | Brian Simiyu United Democratic Alliance | UDA | 3,504 |
| Kiuu | Ruiru | Mbugua Zacharia Macharia United Democratic Alliance | UDA | 6,341 |
| Mwihoko | Ruiru | Gikanga George Ng’ang’a | CCK | 2,690 |
| Mwiki | Ruiru | Anampiu Donna Kendi | UDA | 9,569 |
| Gatuanyaga | Thika Town | Jackma Jackson Karanja Kungu | UDA | 2,521 |
| Hospital | Thika Town | Njue John Njiru | UDA | 7,457 |
| Kamenu | Thika Town | Mungai Peter Mburu | UDA | 19,899 |
| Ngoliba | Thika Town | Njama Joachim Mwangi | JP | 2,280 |
| Township | Thika Town | Kimani Kennedy Kentams Mwangi | UDA | 10,538 |
Source: IEBC · Kenya Gazette · Gazette 9956 · declared winners only, not per-candidate tallies.
Parliamentary activity
What Kiambu's members do across both Houses.
Certified Hansard contributions in the current Parliament; presiding-officer speech is never counted, and each representative's own count is shown on their card above. Browse the full National Assembly and Senate.
Totals across both Houses for the county's current members, for the selected period, using the same counting policy as the member profiles.
Topics raised by members
Three leading topics per member · current parliamentary term · automated labels, not official categories. Topics may overlap.
Counts are contributions tagged with a topic, not a measure of work done within this county.
Kiambu County government budget
What the county government itself budgeted and spent, as reported by the Controller of Budget — separate from the NG-CDF money below.
Controller of Budget, Annual FY 2024/25 — the report.
NG-CDF in Kiambu County
National-government development money allocated per constituency — not the county government's budget.
- Ruiru KSh 221,505,235
- Githunguri KSh 192,613,248
- Juja KSh 192,613,248
- Kabete KSh 192,613,248
- Kiambaa KSh 192,613,248
Show the other 7 of 12, same scale
- Kikuyu KSh 192,613,248
- Lari KSh 192,613,248
- Limuru KSh 192,613,248
- Thika Town KSh 192,613,248
- Gatundu North KSh 182,982,585
- Gatundu South KSh 182,982,585
- Kiambu KSh 182,982,585
Allocations by constituency and financial year
| Constituency | FY 2025/26 | FY 2024/25 | FY 2023/24 | FY 2022/23 |
|---|---|---|---|---|
| Gatundu North NG-CDF record → | KSh 182,982,585 | KSh 170,469,857 | KSh 166,593,720 | KSh 138,215,033 |
| Gatundu South NG-CDF record → | KSh 182,982,585 | KSh 170,469,857 | KSh 166,593,720 | KSh 138,215,033 |
| Githunguri NG-CDF record → | KSh 192,613,248 | KSh 179,441,954 | KSh 175,361,810 | KSh 145,087,603 |
| Juja NG-CDF record → | KSh 192,613,248 | KSh 179,441,954 | KSh 175,361,810 | — |
| Kabete NG-CDF record → | KSh 192,613,248 | KSh 179,441,954 | KSh 175,361,810 | KSh 145,087,603 |
| Kiambaa NG-CDF record → | KSh 192,613,248 | KSh 179,441,954 | — | KSh 145,087,603 |
| Kiambu NG-CDF record → | KSh 182,982,585 | KSh 170,469,857 | KSh 166,593,720 | KSh 138,215,033 |
| Kikuyu NG-CDF record → | KSh 192,613,248 | KSh 179,441,954 | KSh 175,361,810 | KSh 145,087,603 |
| Lari NG-CDF record → | KSh 192,613,248 | KSh 179,441,954 | KSh 175,361,810 | — |
| Limuru NG-CDF record → | KSh 192,613,248 | KSh 179,441,954 | KSh 175,361,810 | KSh 145,087,603 |
| Ruiru NG-CDF record → | KSh 221,505,235 | KSh 206,358,248 | KSh 201,666,082 | KSh 165,705,316 |
| Thika Town NG-CDF record → | KSh 192,613,248 | KSh 179,578,954 | KSh 175,361,810 | KSh 145,087,603 |
Source: NG-CDF Board, checked against their own record before publication.
How this compares
KSh 2.31B 2nd of 47
Ahead of 96% · median KSh 1.16B
1,275,008 2nd of 47
Ahead of 96% · median 398,981
2,422 3rd of 47
Ahead of 94% · median 916
35 4th of 47
Ahead of 91% · median 12
149 1st of 47
Ahead of 98% · median 16
115 8th of 47
Ahead of 83% · median 73
2 17th of 47
Ahead of 49% · median 2
941 4th of 47
Ahead of 91% · median 42
What these numbers don’t measure
- Committee work
- Parliament publishes no committee attendance for either House, so nobody can count it — us included.
- Constituency work
- Funerals, harambees, schools, casework. Recorded nowhere we can read.
- Whether it worked
- We can count questions asked, not answers given.
- Speaking often isn’t speaking well. Use these to ask your representative better questions — not to grade them.
Sources & coverage
Years, geographic scope and original records.
- KNBS census · 2019 — county age/sex population, as enumerated.
- KNBS projections · Volume XVI — the population projected for 2022 from the 2019 census. An estimate, not a count.
- IEBC register · 2022 — registrations, not votes cast.
- IEBC declarations · 2022 — each winner links to the Gazette in Elections.
- Parliament — current members' records and Hansard. Topic labels are automated analysis, not Parliament's own categories.
- Controller of Budget · 2024/25 — Annual FY 2024/25.
- NG-CDF project records use each constituency's register. These and its allocations are separate from county-government spending. View records.