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 | TANA RIVER | 020 | BURA | 0097 | HIRIMANI | 10,750 |
| 004 | TANA RIVER | 020 | BURA | 0098 | BANGALE | 10,129 |
| 004 | TANA RIVER | 020 | BURA | 0099 | SALA | 8,806 |
| 004 | TANA RIVER | 020 | BURA | 0100 | MADOGO | 7,884 |
| 004 | TANA RIVER | 018 | GARSEN | 0086 | KIPINI EAST | 7,898 |
| 004 | TANA RIVER | 018 | GARSEN | 0087 | GARSEN SOUTH | 9,990 |
| 004 | TANA RIVER | 018 | GARSEN | 0088 | KIPINI WEST | 9,180 |
| 004 | TANA RIVER | 018 | GARSEN | 0089 | GARSEN CENTRAL | 8,256 |
| 004 | TANA RIVER | 018 | GARSEN | 0090 | GARSEN WEST | 10,999 |
| 004 | TANA RIVER | 018 | GARSEN | 0091 | GARSEN NORTH | 9,130 |
| 004 | TANA RIVER | 019 | GALOLE | 0092 | KINAKOMBA | 8,318 |
| 004 | TANA RIVER | 019 | GALOLE | 0093 | MIKINDUNI | 7,570 |
| 004 | TANA RIVER | 019 | GALOLE | 0094 | CHEWANI | 14,333 |
| 004 | TANA RIVER | 019 | GALOLE | 0095 | WAYU | 9,744 |
| 004 | TANA RIVER | 020 | BURA | 0096 | CHEWELE | 8,109 |