Federal Poverty Threshold

How the Feds Measure Poverty in America

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The federal poverty threshold is the measurement of poverty in America. The U.S. Census Bureau uses it to report how many Americans live in poverty each year. The poverty threshold is used for statistical purposes. It does not determine qualifications for poverty-reduction programs such as the Affordable Care Act, Medicaid, or welfare. The government outlines those qualifications with the federal poverty level.

Federal agencies use the threshold to measure and report on poverty. The Office of Management and Budget uses it as the official federal poverty definition. The Department of Health and Human Services bases calculations for the federal poverty level on it.

How Poverty Is Defined

The Census Bureau's definition of poverty is a little complicated, though. First, it's based on pre-tax income. This includes earnings, pensions, or retirement income. It also includes interest, dividends, rents, royalties and income from estates and trusts. It does not include capital gains or losses.

The Bureau includes educational assistance, alimony, child support, assistance from outside the household, and other miscellaneous sources. It does not count tax credits. It includes cash benefits such as unemployment compensation, workers' compensation, veterans' payments, and survivor benefits. It counts Social Security, Supplemental Security Income, and public assistance. It does not include non-cash benefits, such as food stamps or housing subsidies. 

It counts the income of family members. It excludes the income of roommates or other non-relatives. It takes into account whether the head of the household is older or younger than 65. It also considers the number of adults versus children. 

The poverty threshold measurement is an all-or-nothing proposition. If the total family income is below the threshold, then everyone in the family is poor. If income is greater than the threshold, then the Census counts no one in the family as poor. 

The poverty threshold does not vary by state, even though the cost of living in each state is very different. Each year, the poverty threshold adjusts for inflation, using the consumer price index.

Poverty Threshold Chart

Here's the 2018 poverty threshold for typical family types and sizes. Once a family reaches three or more members, the income level is the same, despite the age of the head of the household.

Family 2018 Income
Head of Household Younger Than 65

Living Alone


Two Adults


One Adult, One Child


Head of Household 65 or Older

Living Alone


Two Adults


One Adult, One Child


Three People

Three Adults


Two Adults, One Child


One Adult, Two Children


Four People

Four Adults


Three Adults, One Child


Two Adults, Two Children


One Adult, Three Children


For larger families, see "2018 Poverty Threshold by Size of Family and Number of Children," U.S. Census Bureau.

Recent Statistics

According to the U.S. Census, the official poverty rate in 2017 was 12.3 percent. That's down from 15.1 percent in 2010, the highest since the recession. The record was 22.4 percent in 1959. Poverty levels decreased significantly after President Lyndon Johnson's War on Poverty programs.

In 2017, 39.7 million Americans lived in poverty. That's lower than the 46.7 million in 2014, which was the highest number in U.S. history. 

More than half or 56 percent were women. Two-thirds or 67 percent were white. Forty-two percent lived in the South, 23 percent lived in the West, and 19 percent in the Midwest.

Almost all or 83 percent were born in the United States. Only 11 percent were not citizens.

Even those with jobs were not protected from poverty. Six percent of those living in poverty were working full-time with a year-round job. Fourteen percent worked part-time for the whole year. Another 35 percent only worked during part of the year. 

Sadly, 32 percent of those living in poverty were children. That's 12.8 million children under age 18. Another 12 percent, or 4.7 million, were aged 65 years or older. There was 9 percent who had a disability.

Despite the success of the War on Poverty, not many of these low-income people receive welfare. TANF is the Temporary Assistance for Needy Families program. In December 2017, it served 3.3 million people. That's less than 10 percent of those living in poverty. Of those, it served 2.5 million children. That's less than 20 percent of the children who needed it. 


The poverty threshold was created during the presidency of Lyndon B. Johnson. It was designed to make sure families had enough to eat. It used the U.S. Department of Agriculture food budgets designed for families under economic stress. It also used data about what portion of their income families spent on food.

These USDA budgets were developed during the Great Depression. The government used them to determine how much agencies should spend to feed each family. (Source: "How the Census Bureau Measures Poverty," U.S. Census. "The Orshanky Method," U.S. Census. "Alternatives to the Official Poverty Measure," University of Wisconsin.)