Strengelbacher Schlüsselzahlen
| 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | |
| Einwohner 31.12. | 4'717 | 4'716 | 4'662 | 4'726 | 4'880 | 4'976 | 4'933 | 4'927 | 4'965 | 5'051 | |
| Schülerzahl per August | 483 | 496 | 472 | 481 | 501 | 391 | 383 | 372 | 367 | 365 | |
| Haushaltungen 31.12. | 2'192 | 2'232 | 2'224 | 2'286 | 2'309 | 2'321 | 2'368 | 2'381 | 2'409 | 2'449 | |
| Wohnungsbestand 31.12. | 2'232 | 2'255 | 2'260 | 2'398 | 2'401 | 2'410 | 2'409 | 2'461 | 2'471 | 2'490 | |
| Steuerkraft/Kopf Kt-Mittel | 2'655 | 2'642 | 2'605 | 2'543 | 2'669 | 2'778 | 2'848 | 2'850 | 2'910 | ||
| Steuerkraft/Kopf Strengelbach | 1'944 | 2'077 | 1'867 | 1'809 | 1'772 | 1'784 | 1'993 | 2'103 | 2'114 | ||
| Strengelbach in % vom Kt-Mittel | 73% | 79% | 72% | 71% | 66% | 64% | 70% | 74% | 73% | ||
| Steuerfuss | 119% | 119% | 119% | 119% | 119% | 116% | 116% | 116% | 111% | 108% | 103% |