That doesn't feel like a meaningful metric when there are as many as 17% of mothers with young children experiencing food insecurity [1]. Perhaps that's due to COVID, but 11% of households were food insecure as recently as 2018 [2]. Around half a million Americans are homeless, and 35% of them are shelterless [3].
Are all of these people "not poor" and are they "middle class"? This all to say that how we think about poverty should focus more on the outcomes that people actually experience (access to food, shelter, healthcare, etc) than key economic indicators. Claims like "the War on Poverty is over" and "there are no poor people in the US" don't seem to match up with the lived experiences of many Americans.
[1] https://www.brookings.edu/blog/up-front/2020/05/06/the-covid...
[2] https://www.ers.usda.gov/topics/food-nutrition-assistance/fo...
[3] https://endhomelessness.org/homelessness-in-america/homeless...