Radelfingen has a population () of . , 3.4% of the population are resident foreign nationals. Over the last 10 years (2000–2010) the population has changed at a rate of -2.5%. Migration accounted for -0.7%, while births and deaths accounted for -0.8%. Most of the population () speaks
German (1,186 or 97.5%) as their first language,
French is the second most common (10 or 0.8%) and
Albanian is the third (4 or 0.3%). , there were 121 households that consist of only one person and 53 households with five or more people. , a total of 441 apartments (91.9% of the total) were permanently occupied, while 22 apartments (4.6%) were seasonally occupied and 17 apartments (3.5%) were empty. , the construction rate of new housing units was 1.7 new units per 1000 residents. Colors= id:lightgrey value:gray(0.9) id:darkgrey value:gray(0.8) ImageSize = width:1020 height:210 PlotArea = top:10 left:100 bottom:50 right:100 AlignBars = justify DateFormat = x.y Period = from:0 till:1500 TimeAxis = orientation:vertical AlignBars = justify ScaleMajor = gridcolor:darkgrey increment:300 start:0 ScaleMinor = gridcolor:lightgrey increment:60 start:0 PlotData= color:yellowgreen width:40 mark:(line,white) align:center bar:1764 from:start till:146 text:"146" bar:1850 from:start till:1417 text:"1,417" bar:1860 from:start till:1400 text:"1,400" bar:1870 from:start till:1423 text:"1,423" bar:1880 from:start till:1486 text:"1,486" bar:1888 from:start till:1472 text:"1,472" bar:1900 from:start till:1413 text:"1,413" bar:1910 from:start till:1431 text:"1,431" bar:1920 from:start till:1443 text:"1,443" bar:1930 from:start till:1303 text:"1,303" bar:1941 from:start till:1233 text:"1,233" bar:1950 from:start till:1218 text:"1,218" bar:1960 from:start till:1319 text:"1,319" bar:1970 from:start till:1075 text:"1,075" bar:1980 from:start till:989 text:"989" bar:1990 from:start till:1198 text:"1,198" bar:2000 from:start till:1217 text:"1,217" ==Politics==