Map: These US states have the highest rates of long-term poverty

Some states are having difficulty shaking off high poverty rates, a new study suggests.

Between 1989 and 2019, 19.4 million people lived in areas of persistent poverty, according to a report by the US Census Bureau. Persistent poverty can be defined as an area that has consistently had poverty rates at 20% or above for a long duration, typically 30 years.

According to Craig Benson, co-author of the report and survey statistician at the US Census Bureau, there are several economic variables that correlate with high poverty rates.

"One of them is income," Benson told Yahoo Finance. "In areas where median income is high, we often see lower amounts of poverty, and the reverse is true as well, where income is low relative to other areas, poverty tends to be higher."

For example, a low-income state like Mississippi — where the median income for an individual is the lowest in the country at $47,446 — also has the highest rate of persistent poverty at 24.4%. This is followed by New Mexico (21.3%), Louisiana (20.9%), Kentucky (17.5%), and Texas (14.6%).

Notably, all states with persistent poverty above 14% are located in the South. Native Americans (24.3%), Black Americans (19.5%), and Hispanic/Latinos (17.1%) are most likely to live below the federal poverty threshold among all ethnic groups, as of 2021.

"Some Southern states have historically disenfranchised lower-income populations and created policies that have prevented people in poverty from achieving economic self-sufficiency," Jaime Rush, senior attorney at the Southern Poverty Law Center (SPLC), told Yahoo Finance. "Some of these policies intentionally targeted Black and Brown communities, and others disproportionately affected these communities."

In Mississippi, 31.1% of Black Americans live in poverty — the third-highest rate for the racial group behind just Iowa and Louisiana.

According to Rush, the mishandling of federal funds has widened income inequality in Mississippi. For instance, the Temporary Assistance for Needy Families (TANF) is a program that helps states provide monthly cash to low-income families, but the state placed restrictive measures on it, which resulted in a decrease in program participation.

Furthermore, a recent audit revealed that between 2016 and 2019, the Mississippi Department of Human Services "misspent more than $77 million in welfare money that was supposed to help some of the poorest people in the US," according to the Associated Press.

How Medicaid helps

States with high rates of persistent poverty also tend to be states with high rates of uninsured individuals.