Garissa County is divided into six (6) constituencies; Mandera West, Banissa, Mandera North, Mandera South, Mandera East and Lafey and thirty (30) electoral wards.
Below is a list of all the consituencies in Garissa County, Wards in each ward and registered voters;
| REGISTERED VOTERS PER COUNTY ASSEMBLY WARD FOR THE 2022 GENERAL ELECTION | ||||||
| County Code |  County Name | Const Code |  Const. Name | CAW Code |  CAW Name |  Registered Voters |
| 007 | Â GARISSA | 027 | Â GARISSA TOWNSHIP | 0133 | Â TOWNSHIP | 13,419 |
| 007 | Â GARISSA | 027 | Â GARISSA TOWNSHIP | 0134 | Â IFTIN | 11,479 |
| 007 | Â GARISSA | 028 | Â BALAMBALA | 0135 | Â BALAMBALA | 4,414 |
| 007 | Â GARISSA | 028 | Â BALAMBALA | 0136 | Â DANYERE | 3,924 |
| 007 | Â GARISSA | 028 | Â BALAMBALA | 0137 | Â JARA JARA | 2,729 |
| 007 | Â GARISSA | 028 | Â BALAMBALA | 0138 | Â SAKA | 5,413 |
| 007 | Â GARISSA | 028 | Â BALAMBALA | 0139 | Â SANKURI | 9,605 |
| 007 | Â GARISSA | 029 | Â LAGDERA | 0140 | Â MODOGASHE | 6,388 |
| 007 | Â GARISSA | 029 | Â LAGDERA | 0141 | Â BENANE | 4,463 |
| 007 | Â GARISSA | 029 | Â LAGDERA | 0142 | Â GOREALE | 2,438 |
| 007 | Â GARISSA | 029 | Â LAGDERA | 0143 | Â MAALIMIN | 5,091 |
| 007 | Â GARISSA | 029 | Â LAGDERA | 0144 | Â SABENA | 3,394 |
| 007 | Â GARISSA | 029 | Â LAGDERA | 0145 | Â BARAKI | 5,175 |
| 007 | Â GARISSA | 030 | Â DADAAB | 0146 | Â DERTU | 3,744 |
| 007 | Â GARISSA | 030 | Â DADAAB | 0147 | Â DADAAB | 5,657 |
| 007 | Â GARISSA | 030 | Â DADAAB | 0148 | Â LABASIGALE | 4,331 |
| 007 | Â GARISSA | 030 | Â DADAAB | 0149 | Â DAMAJALE | 9,760 |
| 007 | Â GARISSA | 030 | Â DADAAB | 0150 | Â LIBOI | 5,362 |
| 007 | Â GARISSA | 030 | Â DADAAB | 0151 | Â ABAKAILE | 9,331 |
| 007 | Â GARISSA | 031 | Â FAFI | 0152 | Â BURA | 5,272 |
| 007 | Â GARISSA | 031 | Â FAFI | 0153 | Â DEKAHARIA | 4,740 |
| 007 | Â GARISSA | 031 | Â FAFI | 0154 | Â JARAJILA | 3,123 |
| 007 | Â GARISSA | 031 | Â FAFI | 0155 | Â FAFI | 7,050 |
| 007 | Â GARISSA | 031 | Â FAFI | 0156 | Â NANIGHI | 7,150 |
| 007 | Â GARISSA | 032 | Â IJARA | 0157 | Â HULUGHO | 6,266 |
| 007 | Â GARISSA | 032 | Â IJARA | 0158 | Â SANGAILU | 4,919 |
| 007 | Â GARISSA | 032 | Â IJARA | 0159 | Â IJARA | 7,383 |
| 007 | Â GARISSA | 032 | Â IJARA | 0160 | Â MASALANI | 11,098 |