The blazon of the villagecoat of arms is Gules tripant on Coupeaux Vert an Ibex Argent in chief four Mullets of Five of the last in cross.
Demographics
Most of the population speaks French as their first language, German is the second most common and Serbo-Croatian is the third. There are 8 people who speak Italian and 1 person who speaks Romansh. Of the population in the village, 254 or about 44.6% were born in Ayer and lived there in 2000. There were 106 or 18.6% who were born in the same canton, while 92 or 16.1% were born somewhere else in Switzerland, and 95 or 16.7% were born outside of Switzerland. , there were 209 people who were single and never married in the village. There were 295 married individuals, 28 widows or widowers and 38 individuals who are divorced. There were 76 households that consist of only one person and 11 households with five or more people. , a total of 229 apartments were permanently occupied, while 871 apartments were seasonally occupied and 77 apartments were empty. The historical population is given in the following chart: Colors= id:lightgrey value:gray id:darkgrey value:gray ImageSize = width:960 height:210 PlotArea = height:150 left:100 bottom:50 right:100 AlignBars = justify DateFormat = x.y Period = from:0 till:820 TimeAxis = orientation:vertical AlignBars = justify ScaleMajor = gridcolor:darkgrey increment:200 start:0 ScaleMinor = gridcolor:lightgrey increment:40 start:0 PlotData= color:yellowgreen width:40 mark: align:center bar:1850 from:start till:700 text:"700" bar:1860 from:start till:769 text:"769" bar:1870 from:start till:737 text:"737" bar:1880 from:start till:818 text:"818" bar:1888 from:start till:752 text:"752" bar:1900 from:start till:789 text:"789" bar:1910 from:start till:536 text:"536" bar:1920 from:start till:516 text:"516" bar:1930 from:start till:482 text:"482" bar:1941 from:start till:424 text:"424" bar:1950 from:start till:419 text:"419" bar:1960 from:start till:408 text:"408" bar:1970 from:start till:434 text:"434" bar:1980 from:start till:472 text:"472" bar:1990 from:start till:477 text:"477" bar:2000 from:start till:570 text:"570"
There were 312 residents of the village who were employed in some capacity, of which females made up 42.9% of the workforce. the total number of full-time equivalent jobs was 254. The number of jobs in the primary sector was 13, all of which were in agriculture. The number of jobs in the secondary sector was 116 of which 16 or were in manufacturing and 76 were in construction. The number of jobs in the tertiary sector was 125. In the tertiary sector; 16 or 12.8% were in the sale or repair of motor vehicles, 26 or 20.8% were in the movement and storage of goods, 59 or 47.2% were in a hotel or restaurant, 6 or 4.8% were technical professionals or scientists,. , there were 52 workers who commuted into the village and 104 workers who commuted away. The village is a net exporter of workers, with about 2.0 workers leaving the village for every one entering.
In Ayer about 215 or of the population have completed non-mandatory upper secondary education, and 57 or have completed additional higher education. Of the 57 who completed tertiary schooling, 56.1% were Swiss men, 31.6% were Swiss women. , there were 61 students from Ayer who attended schools outside the village.
