Interval data is like ordinal except we can say the intervals between each value are equally split. The most common example is temperature in degrees Fahrenheit. The difference between 29 and 30 degrees is the same magnitude as the difference between 78 and 79 (although I know I prefer the latter).
Bethlehem is a city in Lehigh and Northampton counties in the Lehigh Valley region of the eastern portion of the U.S. state of Pennsylvania. As of the 2010 census, the city had a total population of 74,982, making it the seventh largest city in Pennsylvania, after Philadelphia, Pittsburgh, Allentown, Erie, Reading, and Scranton.
Northampton County, Pennsylvania. Northampton County is a county located in the U.S. state of Pennsylvania. As of the 2010 census, the population was 297,735. Its county seat is Easton. The county was formed in 1752 from parts of Bucks County. Its namesake was Northamptonshire and the county seat of Easton is named for the country house Easton Neston.