| Name | Status | Population census 1991-03-03 | Population census 2001-05-26 | Population census 2011-05-21 | Population estimate 2012-12-31 | |
|---|---|---|---|---|---|---|
| Senica | District | 59,873 | 60,891 | 60,504 | 60,690 | o |
| Trnavský kraj | Region | 541,992 | 551,003 | 554,741 | 556,577 |
| Name | Status | Population census 1991-03-03 | Population census 2001-05-26 | Population census 2011-05-21 | Population estimate 2012-12-31 | |
|---|---|---|---|---|---|---|
| Bílkove Humence | Municipality | 274 | 240 | 221 | 223 | o |
| Borský Mikuláš | Municipality | 3,812 | 3,803 | 3,933 | 3,935 | o |
| Borský Svätý Jur | Municipality | 1,570 | 1,572 | 1,628 | 1,639 | o |
| Čáry | Municipality | 1,174 | 1,249 | 1,268 | 1,276 | o |
| Častkov | Municipality | 595 | 576 | 611 | 622 | o |
| Cerová | Municipality | 1,442 | 1,354 | 1,182 | 1,203 | o |
| Dojč | Municipality | 1,135 | 1,185 | 1,266 | 1,266 | o |
| Hlboké | Municipality | 888 | 863 | 910 | 921 | o |
| Hradište pod Vrátnom | Municipality | 754 | 701 | 676 | 660 | o |
| Jablonica | Municipality | 2,303 | 2,261 | 2,254 | 2,249 | o |
| Koválov | Municipality | 679 | 657 | 713 | 717 | o |
| Kuklov | Municipality | 796 | 762 | 797 | 807 | o |
| Kúty | Municipality | 4,017 | 4,136 | 4,099 | 4,079 | o |
| Lakšárska Nová Ves | Municipality | 1,049 | 1,031 | 1,063 | 1,072 | o |
| Moravský Svätý Ján | Municipality | 1,958 | 2,001 | 2,125 | 2,120 | o |
| Osuské | Municipality | 616 | 627 | 607 | 596 | o |
| Plavecký Peter | Municipality | 624 | 630 | 642 | 640 | o |
| Podbranč | Municipality | 751 | 666 | 615 | 609 | o |
| Prietrž | Municipality | 838 | 723 | 697 | 721 | o |
| Prievaly | Municipality | 950 | 878 | 958 | 970 | o |
| Rohov | Municipality | 398 | 409 | 400 | 407 | o |
| Rovensko | Municipality | 422 | 378 | 414 | 416 | o |
| Rybky | Municipality | 410 | 427 | 452 | 452 | o |
| Šajdíkove Humence | Municipality | 1,060 | 1,131 | 1,082 | 1,106 | o |
| Šaštín - Stráže | Town | 4,787 | 5,005 | 5,107 | 5,142 | o |
| Sekule | Municipality | 1,531 | 1,618 | 1,700 | 1,712 | o |
| Senica | Town | 20,085 | 21,253 | 20,255 | 20,330 | o |
| Smolinské | Municipality | 999 | 939 | 978 | 947 | o |
| Smrdáky | Municipality | 638 | 646 | 702 | 697 | o |
| Sobotište | Municipality | 1,693 | 1,537 | 1,490 | 1,490 | o |
| Štefanov | Municipality | 1,625 | 1,633 | 1,659 | 1,666 | o |
Source: Statistical Office of the Slovak Republic (web).
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