Cannot find city code

I am trying to find the city code for:

  • Jerome, Arizona
  • Elkhart, Indiana
  • Endicott, New York
  • Kilgore, Texas
  • Dahlonega, Georgia

However, I tried to do the steps suggested in this post, but I do not see the alphabetical list that the user mentions. All I see is the variable label and the number of instances.

Cities codes and their availability across samples in IPUMS USA can be found here. In some cases (for example, Jerome, Arizona), it looks like the city is not identified in any samples, therefore it will not have a code. For others, such as Elkhart, Indiana (code 2060), it looks like it is only identified in the following samples: 1900 5%, 1910 1% and 1930 5%