Constituencies of Kenya are used to elect members of the National Assembly, the lower chamber of the Kenyan Parliament. In accordance with article 89 of the 2010 Constitution of Kenya, there are 290 constituencies, based on a formula where these constituencies were to be delineated based on population numbers. Each constituency returns one MP.
In the following lists, the population of each of the 47 counties is given as enumerated in the census of 24 August 2009. Under each county is, the number of seats it has and a list of constituencies are given.
I. Former Coast Province
edit- Population (2019): 1,208,333.
- Current number of seats: 6.
- Constituencies: 1. Changamwe, 2. Jomvu, 3. Kisauni, 4. Nyali, 5. Likoni, 6. Mvita.
2. Kwale County
edit- Population (2019): 866,820.
- Current number of seats: 4.
- Constituencies: 7. Msambweni, 8. Lunga Lunga, 9. Matuga, 10. Kinango.
- Population (2019): 1,453,787.
- Current number of seats: 7.
- Constituencies: 11. Kilifi North, 12. Kilifi South, 13. Kaloleni, 14. Rabai, 15. Ganze, 16. Malindi, 17. Magarini.
- Population (2019): 315,943.
- Current number of seats: 3.
- Constituencies: 18. Garsen, 19. Galole, 20. Bura.
5. Lamu County
editII. Former North Eastern Province
edit- Population (2009): 623,060.
- Current number of seats: 6.
- Constituencies: 27. Garissa Township (formerly Dujis Constituency), 28. Balambala, 29. Lagdera, 30. Dadaab, 31. Fafi, 32. Ijara.
8. Wajir County
edit- Population (2009): 661,941.
- Current number of seats: 6.
- Constituencies: 33. Wajir North, 34. Wajir East, 35. Tarbaj, 36. Wajir West, 37. Eldas, 38. Wajir South.
- Population (2009): 1,025,756.
- Current number of seats: 6.
- Constituencies: 39. Mandera West, 40. Banissa, 41. Mandera North, 42. Mandera South, 43. Mandera East, 44. Lafey.
III. Former Eastern Province
edit10. Marsabit County
edit- Population (2009): 291,166.
- Current number of seats: 4.
- Constituencies: 45. Moyale, 46. North Horr, 47. Saku, 48. Laisamis.
11. Isiolo County
edit- Population (2009): 143,294.
- Current number of seats: 2.
- Constituencies: 49. Isiolo North, 50. Isiolo South.
12. Meru County
edit- Population (2009): 1,356,301.
- Current number of seats: 9.
- Constituencies: 51. Igembe South, 52. Igembe Central, 53. Igembe North, 54. Tigania West, 55. Tigania East, 56. North Imenti, 57. Buuri, 58. Central Imenti, 59. South Imenti.
- Population (2009): 365,330.
- Current number of seats: 3.
- Constituencies: 60. Maara, 61. Chuka/Igambang'ombe, 62. Tharaka.
14. Embu County
edit- Population (2009): 516,212.
- Current number of seats: 4.
- Constituencies: 63. Manyatta, 64. Runyenjes, 65. Mbeere South, 66. Mbeere North.
15. Kitui County
edit- Population (2009): 1,012,709.
- Current number of seats: 8.
- Constituencies: 67. Mwingi North, 68. Mwingi West, 69. Mwingi Central, 70. Kitui West, 71. Kitui Rural, 72. Kitui Central, 73. Kitui East, 74. Kitui South.
16. Machakos County
edit- Population (2009): 1,098,584.
- Current number of seats: 8.
- Constituencies: 75. Masinga, 76. Yatta, 77. Kangundo, 78. Matungulu, 79. Kathiani, 80. Mavoko, 81. Machakos Town, 82. Mwala.
17. Makueni County
edit- Population (2009): 111,179.
- Current number of seats: 6.
- Constituencies: 83. Mbooni, 84. Kilome, 85. Kaiti, 86. Makueni, 87. Kibwezi West, 88. Kibwezi East.
IV. Former Central Province
edit18. Nyandarua County
edit- Population (2009): 596,268.
- Current number of seats: 5.
- Constituencies: 89. Kinangop, 90. Kipipiri, 91. Ol Kalou, 92. Ol Jorok, 93. Ndaragwa.
19. Nyeri County
edit- Population (2009): 693,558.
- Current number of seats: 6.
- Constituencies: 94. Tetu, 95. Kieni, 96. Mathira, 97. Othaya, 98. Mukurweini, 99. Nyeri Town.
20. Kirinyaga County
edit- Population (2009): 528,054.
- Current number of seats: 4.
- Constituencies: 100. Mwea, 101. Gichugu, 102. Ndia, 103. Kirinyaga Central.
21. Murang'a County
edit- Population (2009): 942,581.
- Current number of seats: 7.
- Constituencies: 104. Kangema, 105. Mathioya, 106. Kiharu, 107. Kigumo, 108. Maragwa, 109. Kandara, 110. Gatanga.
22. Kiambu County
edit- Population (2009): 1,623,282.
- Current number of seats: 12.
- Constituencies: 111. Gatundu South, 112. Gatundu North, 113. Juja, 114. Thika Town, 115. Ruiru, 116. Githunguri, 117. Kiambu, 118. Kiambaa, 119. Kabete, 120. Kikuyu, 121. Limuru, 122. Lari.
V. Former Rift Valley Province
edit23. Turkana County
edit- Population (2009): 855,399.
- Current number of seats: 6.
- Constituencies: 123. Turkana North, 124. Turkana West, 125. Turkana Central, 126. Loima, 127. Turkana South, 128. Turkana East.
- Population (2009): 512,690.
- Current number of seats: 4.
- Constituencies: 129. Kapenguria, 130. Sigor, 131. Kacheliba, 132. Pokot South.
25. Samburu County
edit- Population (2009): 223,947.
- Current number of seats: 3.
- Constituencies: 133. Samburu West, 134. Samburu North, 135. Samburu East.
- Population (2009): 818,757.
- Current number of seats: 5.
- Constituencies: 136. Kwanza, 137. Endebess, 138. Saboti, 139. Kiminini, 140. Cherangany.
- Population (2009): 894,179.
- Current number of seats: 6.
- Constituencies: 141. Soy, 142. Turbo, 143. Moiben, 144. Ainabkoi, 145. Kapseret, 146. Kesses.
- Population (2009): 369,998.
- Current number of seats: 4.
- Constituencies: 147. Marakwet East, 148. Marakwet West, 149. Keiyo North, 150. Keiyo South.
29. Nandi County
edit- Population (2009): 752,966.
- Current number of seats: 6.
- Constituencies: 151. Tinderet, 152. Aldai, 153. Nandi Hills, 154. Chesumei, 155. Emgwen, 156. Mosop.
30. Baringo County
edit- Population (2009): 555,561.
- Current number of seats: 6.
- Constituencies: 157. Tiaty, 158. Baringo North, 159. Baringo Central, 160. Baringo South, 161. Mogotio, 162. Eldama Ravine.
31. Laikipia County
edit- Population (2009): 399,227.
- Current number of seats: 3.
- Constituencies: 163. Laikipia West, 164. Laikipia East, 165. Laikipia North.
32. Nakuru County
edit- Population (2009): 1,603,325.
- Current number of seats: 11.
- Constituencies: 166. Molo, 167. Njoro, 168. Naivasha, 169. Gilgil, 170. Kuresoi South, 171. Kuresoi North, 172. Subukia, 173. Rongai, 174. Bahati, 175. Nakuru Town West, 176. Nakuru Town East.
33. Narok County
edit- Population (2009): 850,920.
- Current number of seats: 6.
- Constituencies: 177. Kilgoris, 178. Emurua Dikirr, 179. Narok North, 180. Narok East, 181. Narok South, 182. Narok West.
34. Kajiado County
edit- Population (2009): 687,312.
- Current number of seats: 5.
- Constituencies: 183. Kajiado North, 184. Kajiado Central, 185. Kajiado East, 186. Kajiado West, 187. Kajiado South.
35. Kericho County
edit- Population (2009): 758,339.
- Current number of seats: 6.
- Constituencies: 188. Kipkelion East, 189. Kipkelion West, 190. Ainamoi, 191. Bureti, 192. Belgut, 193. Sigowet–Soin.
36. Bomet County
edit- Population (2009): 545,378.
- Current number of seats: 5.
- Constituencies: 194. Sotik, 195. Chepalungu, 196. Bomet East, 197. Bomet Central, 198. Konoin.
VI. Former Western Province
edit37. Kakamega County
edit- Population (2009): 1,660,768.
- Current number of seats: 12.
- Constituencies: 199. Lugari, 200. Likuyani, 201. Malava, 202. Lurambi, 203. Navakholo, 204. Mumias West, 205. Mumias East, 206. Matungu, 207. Butere, 208. Khwisero, 209. Shinyalu, 210. Ikolomani.
38. Vihiga County
edit- Population (2009): 554,622.
- Current number of seats: 5.
- Constituencies: 211. Vihiga, 212. Sabatia, 213. Hamisi, 214. Luanda, 215. Emuhaya.
39. Bungoma County
edit- Population (2009): 1,630,934.
- Current number of seats: 9.
- Constituencies: 216. Mount Elgon, 217. Sirisia, 218. Kabuchai, 219. Bumula, 220. Kanduyi, 221. Webuye East, 222. Webuye West, 223. Kimilili, 224. Tongaren.
40. Busia County
edit- Population (2009): 488,075.
- Current number of seats: 7.
- Constituencies: 225. Teso North, 226. Teso South, 227. Nambale, 228. Matayos, 229. Butula, 230. Funyula, 231. Budalangi.
VII. Former Nyanza Province
edit41. Siaya County
edit- Population (2009): 842,304.
- Current number of seats: 6.
- Constituencies: 232. Ugenya, 233. Ugunja, 234. Alego Usonga, 235. Gem, 236. Bondo, 237. Rarieda.
42. Kisumu County
edit- Population (2009): 968,909.
- Current number of seats: 7.
- Constituencies: 238. Kisumu East, 239. Kisumu West, 240. Kisumu Central, 241. Seme, 242. Nyando, 243. Muhoroni, 244. Nyakach.
43. Homa Bay County
edit- Population (2009): 963,794.
- Current number of seats: 8.
- Constituencies: 245. Kasipul, 246. Kabondo Kasipul, 247. Karachuonyo, 248. Rangwe, 249. Homa Bay Town, 250. Ndhiwa, 251. Mbita, 252. Suba.
44. Migori County
edit- Population (2009): 1,028,579.
- Current number of seats: 8.
- Constituencies: 253. Rongo, 254. Awendo, 255. Suna East, 256. Suna West, 257. Uriri, 258. Nyatike, 259. Kuria West, 260. Kuria East.
45. Kisii County
edit- Population (2009): 1,152,282.
- Current number of seats: 9.
- Constituencies: 261. Bonchari, 262. South Mugirango, 263. Bomachoge Borabu, 264. Bobasi, 265. Bomachoge Chache, 266. Nyaribari Masaba, 267. Nyaribari Chache, 268. Kitutu Chache North, 269. Kitutu Chache South.
46. Nyamira County
edit- Population (2009): 598,252.
- Current number of seats: 4.
- Constituencies: 270. Kitutu Masaba, 271. West Mugirango, 272. North Mugirango, 273. Borabu.
VIII. Former Nairobi Province
edit47. Nairobi County
edit- Population (2009): 3,138,369.
- Current number of seats: 17.