https://wallethub.com/edu/happiest-places-to-live/32619/

The survey shows the happiest and best cities in the US.

The citizens in the US cities have entered their answers in the surveys. It’s probably a voluntary survey.

The survey can be influenced by the amount of people that answer to the survey question and how those people feel about the city. There might be a lot of people that love their city, but didn’t put their answers in, and there might be a lot of people that hate the city they live in that did put their answers in the survey and it go recorded. Meaning the city could have gone down in score because of that little influence.