Tana River County has three (3) constituencies Which include Garsen Constituency, Galole Constituency and Bura Constituency and fifteen (15) electoral wards.
Below is a list of all the consituencies in Tana River County, Wards in each ward and the current Member of Parliament;
| 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 |
| 004 | Â TANA RIVER | 020 | Â BURA | 0097 | Â HIRIMANI | 10,750 |
| 004 | Â TANA RIVER | 020 | Â BURA | 0098 | Â BANGALE | 10,129 |
| 004 | Â TANA RIVER | 020 | Â BURA | 0099 | Â SALA | 8,806 |
| 004 | Â TANA RIVER | 020 | Â BURA | 0100 | Â MADOGO | 7,884 |
| 004 | Â TANA RIVER | 018 | Â GARSEN | 0086 | Â KIPINI EAST | 7,898 |
| 004 | Â TANA RIVER | 018 | Â GARSEN | 0087 | Â GARSEN SOUTH | 9,990 |
| 004 | Â TANA RIVER | 018 | Â GARSEN | 0088 | Â KIPINI WEST | 9,180 |
| 004 | Â TANA RIVER | 018 | Â GARSEN | 0089 | Â GARSEN CENTRAL | 8,256 |
| 004 | Â TANA RIVER | 018 | Â GARSEN | 0090 | Â GARSEN WEST | 10,999 |
| 004 | Â TANA RIVER | 018 | Â GARSEN | 0091 | Â GARSEN NORTH | 9,130 |
| 004 | Â TANA RIVER | 019 | Â GALOLE | 0092 | Â KINAKOMBA | 8,318 |
| 004 | Â TANA RIVER | 019 | Â GALOLE | 0093 | Â MIKINDUNI | 7,570 |
| 004 | Â TANA RIVER | 019 | Â GALOLE | 0094 | Â CHEWANI | 14,333 |
| 004 | Â TANA RIVER | 019 | Â GALOLE | 0095 | Â WAYU | 9,744 |
| 004 | Â TANA RIVER | 020 | Â BURA | 0096 | Â CHEWELE | 8,109 |