Julen en højtid inden for [[lutheranisme]], den [[romerskkatolske kirke]] og [[den anglikanske kirke]]. I områder, hvor disse typer kristendom findes, bliver der normalt afholdt [[julegudstjeneste]]r. Sammen med [[Fpåskepåske]] er julen den periode på året, hvor flest mennesker går i kirke. En undersøgelse fra 2010 udført af [[LifeWay Christian Resources]] konkluderede at seks ud af ti amerikanere gik i kirke i juledagene.<ref>{{cite magazine |last1=Stetzer |first1=Ed |title=What Is Church Attendance Like During Christmastime? New Data From LifeWay Research |url=https://www.christianitytoday.com/edstetzer/2015/december/what-is-church-attendance-like-during-christmastime-new-dat.html |magazine=[[Christianity Today]] |date=December 14, 2015 |access-date=December 9, 2018 |archive-url=https://web.archive.org/web/20180129024022/http://www.christianitytoday.com/edstetzer/2015/december/what-is-church-attendance-like-during-christmastime-new-dat.html |archive-date=January 29, 2018 |url-status=live }}</ref> I [[Storbritannien]] meddelte [[den engelske kirke]] at 2,5 mio. personer deltog i julegustjenester i 2015.<ref>{{cite news | url=https://www.telegraph.co.uk/news/2016/10/27/british-families-only-attend-church-at-christmas-new-figures-sug/ | title=British families only attend church at Christmas, new figures suggest | first=John | last=Bingham | date=October 27, 2016 | work=[[The Daily Telegraph]] | accessdate=December 24, 2017 | archive-url=https://web.archive.org/web/20171227191442/http://www.telegraph.co.uk/news/2016/10/27/british-families-only-attend-church-at-christmas-new-figures-sug/ | archive-date=December 27, 2017 | url-status=live }}</ref>
