{{Infobox German location |name = Welzow |German_name = Wjelcej <!-- Sorbian name --> |type = Stadt |image_coa = Wappen der Stadt Welzow.png |image_flag = Flag red white 5x3.svg |coordinates = {{coord|51|34|00|N|14|10|59|E|format=dms|display=inline,title}} |image_plan = Welzow in SPN.png |state = Brandenburg |district = Spree-Neiße |elevation = 121 |area = 39.57 |postal_code = 03119 |area_code = 035751 |licence = SPN |Gemeindeschlüssel = 12 0 71 408 |website = [http://www.welzow.de www.welzow.de] |mayor = Birgit Zuchold<ref>[https://wahlen.brandenburg.de/wahlen/de/kommunalwahlen/bm-wahlen/ergebnisse/~12071000 Landkreis Spree-Neiße Wahl der Bürgermeisterin / des Bürgermeisters], accessed 2 July 2021.</ref> |leader_term = 2017–25 |party = SPD }} '''Welzow''' ({{IPA|de|ˈvɛltsoː|-|De-Welzow.ogg}}; {{langx|dsb|Wjelcej}}) is a town in the district of Spree-Neiße, in southeastern Brandenburg, Germany. It is situated 16 km northwest of Hoyerswerda, and 23 km southwest of Cottbus.
== Demography == <gallery widths="250" heights="150"> File:Bevölkerungsentwicklung Welzow.pdf|Development of population since 1875 within the current Boundaries (Blue Line: Population; Dotted Line: Comparison to Population development in Brandenburg state; Grey Background: Time of Nazi Germany; Red Background: Time of communist East Germany) File:Bevölkerungsprognosen Welzow.pdf|Recent Population Development and Projections (Population Development before Census 2011 (blue line); Recent Population Development according to the Census in Germany in 2011 (blue bordered line); Official projections for 2005-2030 (yellow line); for 2017-2030 (scarlet line); for 2020-2030 (green line) </gallery>
{{historical populations |align=none | cols=3 | percentages=pagr |title = Welzow: Population development <br>within the current boundaries (2020)<ref>Detailed data sources are to be found in the Wikimedia Commons.[http://commons.wikimedia.org/wiki/Category:Population_projection_Brandenburg Population Projection Brandenburg at Wikimedia Commons]</ref> | 1875 | 630 | 1890 | 684 | 1910 | 5549 | 1925 | 6962 | 1939 | 7815 | 1950 | 8235 | 1964 | 7685 | 1971 | 7481 | 1981 | 6277 | 1985 | 6354 | 1990 | 5602 | 1995 | 5071 | 2000 | 4838 | 2005 | 4183 | 2010 | 3806 | 2015 | 3645 | 2016 | 3552 | 2017 | 3490 | 2018 | 3418 | 2019 | 3384 | 2020 | 3317 }}
==References== {{Reflist}}
{{Cities and towns in Spree-Neiße (district)}}
{{Authority control}}
Category:Populated places in Spree-Neiße {{Brandenburg-geo-stub}}