That's inflation. Inflation is when a certain form of currency starts to have less value over time. Mainly two things cause it: people's perception of value, and the economic principle of supply and demand.
Homefacts City Report. Emmaus is located in Lehigh County, PA. The population is 11,268, making Emmaus the 4th largest city in Lehigh County. There are 4 public schools in Emmaus with an average Homefacts rating of A-. The total crime rate for Emmaus is low, and there are 11 registered sex offenders residing in the city.
Sponsored Topics. Emmaus ( /ÉmeÉª.És/ e-may-És) is a borough in Lehigh County, Pennsylvania, in the United States. It is located five miles southwest of Allentown, Pennsylvania, in the Lehigh Valley region of the state. The population of Emmaus was 11,313 at the 2000 census.