Baringo County administrative units comprise seven Sub Counties and 30 Electoral Wards, with the largest Sub County being Tiaty West with an area of 2500 Km2 and the smallest being Baringo Central with 786.5 Km2. The wards are also vast in size with the largest ward being Tirioko ward with 1102.68 Km2 and the smallest being Ravine ward being 33.55 Km2. The County Government is yet to establish the village administration units as per the County Government Act.
Electoral Wards and Area by Sub County and Wards in Square Kilometers.
| Sub-County | Area in Km2 | Electoral Wards | Area in Km2 |
| Baringo North | 1703 | Barwessa | 475.5 |
| Saimo Kipsaraman | 85.6 | ||
| Saimo Soi | 542 | ||
| Kabartonjo | 126.7 | ||
| Bartabwa | 473.5 | ||
| Tiaty West | 2500 | Tirioko | 1102.68 |
| Kolowa | 752.55 | ||
| Ribkwo | 871.49 | ||
| Tiaty East | 2039.5 | Silale | 335.36 |
| Tangulbei | 591.25 | ||
| Loiyamorok | 597.8 | ||
| Churo/Amaya | 289.35 | ||
| Mogotio | 1304 | Mogotio | 287.53 |
| Emining | 529.21 | ||
| Kisanana | 487.13 | ||
| Baringo South | 1985.11 | Mukutani | 534.9 |
| Marigat | 682.71 | ||
| Mochongoi | 586.8 | ||
| Ilchamus | 180.7 | ||
| Eldama Ravine | 954 | Lembus | 142.89 |
| Ravine | 33.55 | ||
| Lembus Kwen | 178.01 | ||
| Koibatek | 254.37 | ||
| Lembus Perkerra | 130.2 | ||
| Mumberes/Majimazuri | 214.8 | ||
| Baringo Central | 589 | Kabarnet | 165.68 |
| Sacho | 105.98 | ||
| Tenges | 123.94 | ||
| Kapropita | 96.35 | ||
| Ewalel Chapchap | 96.57 |
