Knoxville, IA

ZIP code 50198 does not appear to be an active, standard USPS geographic ZIP code, so it cannot be reliably associated with a specific community or its landmarks. It may be a typo or a nonstandard code. If you meant a nearby Iowa ZIP code, such as 50278 for Zearing or 50010 for Ames, please clarify so the description can identify the relevant landmarks.