| RANK IN 2013 | RANK IN 2012 | COUNTYCODE | COUNTY | PERF. INDEX IN 2013 | PERF. INDEX IN 2012 |
| 1 | 1 | 22 | SAMBURU | 37.884266 | 38.1848 |
| 2 | 4 | 42 | SIAYA | 36.032497 | 36.7040 |
| 3 | 3 | 34 | ELGEYO MARAKWET | 35.216527 | 36.8377 |
| 4 | 2 | 24 | WEST POKOT | 34.828020 | 37.3744 |
| 5 | 6 | 23 | TRANSNZOIA | 34.691986 | 35.6825 |
| 6 | 7 | 25 | BOMET | 34.259585 | 35.5872 |
| 7 | 10 | 39 | KISUMU | 34.256747 | 34.9349 |
| 8 | 15 | 35 | BUSIA | 34.017927 | 33.4631 |
| 9 | 5 | 14 | EMBU | 33.997279 | 36.1377 |
| 10 | 9 | 26 | UASIN GISHU | 33.935145 | 35.0312 |
| 11 | 13 | 44 | MIGORI | 33.781707 | 33.9242 |
| 12 | 11 | 28 | KERICHO | 33.758398 | 34.6886 |
| 13 | 14 | 41 | HOMA BAY | 33.661984 | 33.7987 |
| 14 | 12 | 38 | VIHIGA | 33.417164 | 34.1388 |
| 15 | 18 | 37 | KAKAMEGA | 33.398845 | 33.0784 |
| 16 | 8 | 29 | NANDI | 33.230285 | 35.1336 |
| 17 | 21 | 30 | LAIKIPIA | 32.360173 | 32.1086 |
| 18 | 19 | 19 | THARAKANITHI | 32.195853 | 33.0744 |
| 19 | 20 | 27 | NAKURU | 31.780679 | 32.7232 |
| 20 | 25 | 21 | TURKANA | 31.622772 | 31.5806 |
| 21 | 29 | 31 | KAJIADO | 31.408343 | 31.1682 |
| 22 | 22 | 43 | NYAMIRA | 30.971204 | 32.0146 |
| 23 | 27 | 18 | MAKUENI | 30.970680 | 31.2063 |
| 24 | 17 | 33 | BARINGO | 30.908069 | 33.0848 |
| 25 | 31 | 40 | KISII | 30.870765 | 30.4213 |
| 26 | 24 | 36 | BUNGOMA | 30.796345 | 31.8009 |
| 27 | 23 | 07 | NYANDARUA | 30.627862 | 31.8528 |
| 28 | 26 | 15 | MERU | 30.453280 | 31.4529 |
| 29 | 16 | 20 | NAIROBI | 30.434947 | 33.2044 |
| 30 | 34 | 16 | MARSABIT | 30.175000 | 30.0225 |
| 31 | 28 | 09 | KIRINYAGA | 29.973544 | 31.1932 |
| 32 | 33 | 10 | MURANG'A | 29.449551 | 30.1217 |
| 33 | 32 | 13 | KITUI | 29.146080 | 30.4043 |
| 34 | 30 | 08 | NYERI | 28.974155 | 30.7343 |
| 35 | 35 | 12 | MACHAKOS | 27.960492 | 28.9225 |
| 36 | 38 | 32 | NAROK | 27.959657 | 27.5549 |
| 37 | 37 | 11 | KIAMBU | 26.906894 | 28.1173 |
| 38 | 36 | 01 | TAITA TAVETA | 26.149539 | 28.4859 |
| 39 | 39 | 03 | MOMBASA | 25.939011 | 26.5932 |
| 40 | 40 | 17 | ISIOLO | 25.809437 | 25.8967 |
| 41 | 41 | 04 | KILIFI | 24.551827 | 24.2214 |
| 42 | 42 | 02 | KWALE | 24.297220 | 23.5678 |
| 43 | 44 | 45 | GARISSA | 23.066333 | 22.7600 |
| 44 | 43 | 46 | WAJIR | 22.474000 | 23.2771 |
| 45 | 45 | 06 | LAMU | 22.168315 | 21.7994 |
| 46 | 46 | 47 | MANDERA | 21.373074 | 20.6700 |
| 47 | 47 | 05 | TANA RIVER | 20.015230 | 19.7076 |