Bevölkerungsentwicklung – Seesen
Jährliche Komponenten
| Jahr | Bevölkerung | Geburten | Sterbefälle | Natürlicher Saldo | Wanderungssaldo |
|---|---|---|---|---|---|
| 2025 | 18.612 | – | 344 | – | – |
| 2024 | 18.657 | 153 | 300 | -147 | 91 |
| 2023 | 18.719 | 139 | 312 | -173 | 202 |
| 2022 | 18.689 | 138 | 353 | -215 | 246 |
| 2021 | 19.125 | 174 | 311 | -137 | 145 |
| 2020 | 19.111 | 138 | 303 | -165 | 42 |
| 2019 | 19.240 | 123 | 286 | -163 | 78 |
| 2018 | 19.340 | 147 | 260 | -113 | -12 |
| 2017 | 19.472 | 144 | 257 | -113 | 271 |
| 2016 | 19.314 | 140 | 248 | -108 | 126 |
| 2015 | 19.296 | 141 | 256 | -115 | 70 |
| 2014 | 19.337 | 129 | 273 | -144 | 98 |
| 2013 | 19.386 | 113 | 246 | -133 | -55 |
| 2012 | 19.564 | 120 | 249 | -129 | -49 |
| 2011 | 19.739 | 114 | 273 | -159 | -87 |
| 2010 | 20.280 | 159 | 284 | -125 | -128 |
| 2009 | 20.530 | 137 | 269 | -132 | -135 |
| 2008 | 20.795 | 144 | 274 | -130 | -209 |