County profile
Nyandarua 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. 638,289 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 (2,665) and changes of particulars (75) 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.
Age profile & sources
People & the register · Nyandarua
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. 638,289 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.
49,913 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 Nyandarua in Parliament.
2022 election — who won here
Declared winners from the IEBC Kenya Gazette.
County-wide winners · 2022
GovernorKiarie Moses Ndirangu BadilishaUDA · 158,263 votesGazette 9949
SenatorMethu John MuhiaUDA · 158,096 votesGazette 9955
Woman RepresentativeGitau Faith WairimuUDA · 159,621 votesGazette 9951
Constituencies & registered voters
Constituency winners · 2022
KinangopKwenya Thuku ZacharyJP · 39,331 votesGazette 9950
KipipiriMuhia WanjikuUDA · 15,196 votesGazette 9950
NdaragwaGachagua George NUDA · 30,183 votesGazette 9950
OljorokMuchira Michael MwangiUDA · 26,980 votesGazette 9950
OlkalouKiaraho David NjugunaJP · 24,058 votesGazette 9950
County Assembly (MCA) winners — 25 wards
- Wanjohi · Wanjiru Isaac Kung’u 9,794 UDA
- Weru · Mburu Simon Mbogo 6,972 UDA
- Shamata · Karanja Reuben Gitau 6,256 UDA
- Nyakio · Mwangi Njeru Zackary 5,654 UDA
- Karau · Ndungu Daniel Gitau 5,348 UDA
Show the other 20 of 25, same scale
- Leshau Pondo · Kamau Peter Gathungu 5,318 UDA
- Kanjuiri Range · Gachino John Thuo 5,268 UDA
- Rurii · Kiriga Peter Thinji 5,198 IND
- Central · Maina Peter Mwangi 4,951 UDA
- Engineer · Mwangi Gichuki James 4,792 JP
- Magumu · Ndungu Kassana Hussein 4,781 UDA
- Charagita · Mburu Paul Kiruka 4,757 UDA
- Mirangine · Wainaina Samuel Mathu 4,593 UDA
- Gatimu · Chege Duncan Githinji 4,436 IND
- Gathara · Waruiru Kamwana Geofrey 4,369 IND
- Kaimbaga · Nyagah Elijah Mwangi 4,180 UDA
- Murungaru · Mwangi Maina Ebrahim 4,153 JP
- Gathanji · Kuria Joseph Thuo 3,958 UDA
- North Kinangop · Wambugu King'ori Edinald 3,946 UDA
- Kipipiri · Ngeche Paul Wambaire 3,875 CCK
- Geta · Gathirimu Samuel Chege 3,753 UDA
- Njabini/Kiburu · Kiiru Gachomba James 3,569 JP
- Githabai · Rimui Kaiyani Samwel 3,529 UDA
- Kiriita · Ndirangu Milkah Wanjiru 3,376 UDA
- Githioro · Mbae Isaac Kamau 2,805 UDA
Show all 25 wards as a table
| Ward | Constituency | Winner | Party | Votes |
|---|---|---|---|---|
| Engineer | Kinangop | Mwangi Gichuki James | JP | 4,792 |
| Gathara | Kinangop | Waruiru Kamwana Geofrey | IND | 4,369 |
| Githabai | Kinangop | Rimui Kaiyani Samwel | UDA | 3,529 |
| Magumu | Kinangop | Ndungu Kassana Hussein | UDA | 4,781 |
| Murungaru | Kinangop | Mwangi Maina Ebrahim | JP | 4,153 |
| Njabini/Kiburu | Kinangop | Kiiru Gachomba James | JP | 3,569 |
| North Kinangop | Kinangop | Wambugu King'ori Edinald | UDA | 3,946 |
| Nyakio | Kinangop | Mwangi Njeru Zackary | UDA | 5,654 |
| Geta | Kipipiri | Gathirimu Samuel Chege | UDA | 3,753 |
| Githioro | Kipipiri | Mbae Isaac Kamau | UDA | 2,805 |
| Kipipiri | Kipipiri | Ngeche Paul Wambaire | CCK | 3,875 |
| Wanjohi | Kipipiri | Wanjiru Isaac Kung’u | UDA | 9,794 |
| Central | Ndaragwa | Maina Peter Mwangi | UDA | 4,951 |
| Kiriita | Ndaragwa | Ndirangu Milkah Wanjiru | UDA | 3,376 |
| Leshau Pondo | Ndaragwa | Kamau Peter Gathungu | UDA | 5,318 |
| Shamata | Ndaragwa | Karanja Reuben Gitau | UDA | 6,256 |
| Charagita | Ol Jorok | Mburu Paul Kiruka | UDA | 4,757 |
| Gathanji | Ol Jorok | Kuria Joseph Thuo | UDA | 3,958 |
| Gatimu | Ol Jorok | Chege Duncan Githinji | IND | 4,436 |
| Weru | Ol Jorok | Mburu Simon Mbogo | UDA | 6,972 |
| Kaimbaga | Ol Kalou | Nyagah Elijah Mwangi | UDA | 4,180 |
| Kanjuiri Range | Ol Kalou | Gachino John Thuo | UDA | 5,268 |
| Karau | Ol Kalou | Ndungu Daniel Gitau | UDA | 5,348 |
| Mirangine | Ol Kalou | Wainaina Samuel Mathu | UDA | 4,593 |
| Rurii | Ol Kalou | Kiriga Peter Thinji | IND | 5,198 |
Source: IEBC · Kenya Gazette · Gazette 9956 · declared winners only, not per-candidate tallies.
Parliamentary activity
What Nyandarua'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.
Nyandarua 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 Nyandarua County
National-government development money allocated per constituency — not the county government's budget.
- Kinangop KSh 221,505,235
- Ol Kalou KSh 192,613,248
- Kipipiri KSh 182,982,585
- Ndaragwa KSh 182,982,585
- Ol Jorok KSh 182,982,585
Allocations by constituency and financial year
| Constituency | FY 2025/26 | FY 2024/25 | FY 2023/24 | FY 2022/23 |
|---|---|---|---|---|
| Kinangop NG-CDF record → | KSh 221,505,235 | — | KSh 201,810,082 | KSh 165,705,316 |
| Kipipiri NG-CDF record → | KSh 182,982,585 | KSh 170,469,857 | KSh 166,593,720 | KSh 138,215,033 |
| Ndaragwa NG-CDF record → | KSh 182,982,585 | KSh 170,469,857 | KSh 166,593,720 | KSh 138,215,033 |
| Ol Jorok NG-CDF record → | KSh 182,982,585 | — | KSh 166,593,720 | — |
| Ol Kalou NG-CDF record → | KSh 192,613,248 | KSh 179,441,954 | KSh 175,361,810 | KSh 145,087,603 |
Source: NG-CDF Board, checked against their own record before publication.
How this compares
KSh 963.1M 33rd of 47
Ahead of 30% · median KSh 1.16B
361,165 28th of 47
Ahead of 40% · median 398,981
747 31st of 47
Ahead of 34% · median 916
8 33rd of 47
Ahead of 28% · median 12
14 25th of 47
Ahead of 43% · median 16
63 26th of 47
Ahead of 43% · median 73
1 25th of 47
Ahead of 23% · median 2
43 22nd of 47
Ahead of 53% · 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.