Bevölkerungsentwicklung – Seesen
Bevölkerung (Jahresende)
Jährliche Komponenten
| Jahr | Bevölkerung | Geburten | Sterbefälle | Natürlicher Saldo | Wanderungssaldo |
| 2024 |
18.657 |
– |
– |
– |
91 |
| 2023 |
18.719 |
– |
– |
– |
202 |
| 2022 |
18.689 |
– |
– |
– |
246 |
| 2021 |
19.125 |
– |
– |
– |
145 |
| 2020 |
19.111 |
– |
– |
– |
42 |
| 2019 |
19.240 |
– |
– |
– |
78 |
| 2018 |
19.340 |
– |
– |
– |
-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 |