Staffelbach has a population () of . , 6.6% of the population are foreign nationals. Over the last 10 years (1997–2007) the population has changed at a rate of 7.6%. Most of the population () speaks
German (96.6%), with
Italian being second most common ( 0.9%) and
Serbo-Croatian being third ( 0.8%). The age distribution, , in Staffelbach is; 98 children or 9.4% of the population are between 0 and 9 years old and 148 teenagers or 14.2% are between 10 and 19. Of the adult population, 107 people or 10.3% of the population are between 20 and 29 years old. 158 people or 15.2% are between 30 and 39, 192 people or 18.5% are between 40 and 49, and 140 people or 13.5% are between 50 and 59. The senior population distribution is 87 people or 8.4% of the population are between 60 and 69 years old, 71 people or 6.8% are between 70 and 79, there are 36 people or 3.5% who are between 80 and 89, and there are 2 people or 0.2% who are 90 and older. , there were 26 homes with 1 or 2 persons in the household, 144 homes with 3 or 4 persons in the household, and 176 homes with 5 or more persons in the household. There were a total of 5 empty apartments for a 1.2% vacancy rate. The historical population is given in the following table: ==Economy==