Of the population in the former municipality of Obererlinsbach, 175 or about 25.3% were born in Obererlinsbach and lived there in 2000. There were 66 or 9.6% who were born in the same canton, while 333 or 48.2% were born somewhere else in Switzerland, and 100 or 14.5% were born outside of Switzerland.
The data shows that a significant portion of Obererlinsbach's population was born outside of the municipality itself, with a substantial percentage being from other cantons within Switzerland.