Median income is the middle value in a list of incomes sorted from lowest to highest, while average income is the sum of all incomes divided by the number of earners. The practical difference between median income and average income is that a handful of very high or very low earners can pull the average far away from what a typical person actually makes, but the median barely moves. That is why the Census Bureau, courts, and federal benefit programs lean on the median. The most recent Census figure puts U.S. median household income at $83,730 as of 2024.1United States Census Bureau. Income, Poverty and Health Insurance Coverage in the U.S.: 2024
How the Median Is Found
To find the median, line up every reported income from lowest to highest and pick the one in the exact middle. If the list has an odd number of entries, say 101 people, the 51st person’s income is the median, with 50 people on each side. When the count is even, take the two middle values, add them, and divide by two.
Because the median depends only on position in the sorted list, a single billionaire added to the group shifts the middle by just one spot. The number stays close to what most people in the group actually earn.
How the Average Is Found
The average, also called the mean, adds every income together and divides by the number of people. Every dollar in the group affects the result, so an extreme figure at either end drags the mean toward itself. That sensitivity is useful for measuring total economic output, but it is misleading if the question is what a typical earner brings in.
A Worked Example
Imagine ten people. Nine of them each earn $50,000. The tenth earns $5,000,000. The average income for the group is $545,000, a figure that describes no one in it. The median stays at $50,000, which is what nine out of ten people actually make.
Flip the example and the same thing happens on the low end. One person earning almost nothing pulls the average down while leaving the median untouched. Whenever incomes are spread unevenly, the two numbers diverge, and the wider the gap between them, the more inequality is in the underlying data.
Why the Difference Matters
The choice between median and average changes the story a number tells. In a city where a small number of residents pull down very high salaries, the average can paint an unrealistically rosy picture of local prosperity. The median resists that distortion by ignoring the size of the outliers and looking only at the middle position, which gives policymakers and researchers a steadier baseline for comparing regions or tracking change over time.
That steadiness is also why the median, not the average, is the number written into federal law and program rules. A few examples of where it controls real outcomes:
- Bankruptcy. Individuals filing Chapter 7 must pass a means test that compares their income to the median family income for a household of their size in their state. Falling below the state median generally clears the way for Chapter 7. Rising above it triggers a presumption that the filer can repay part of the debt, usually pushing the case toward Chapter 13. The same threshold also decides whether a Chapter 13 repayment plan runs three years or five.2Office of the Law Revision Counsel. 11 USC 707 – Dismissal of a Case or Conversion to a Case Under Chapter 11 or 133Office of the Law Revision Counsel. 11 USC 1325 – Confirmation of Plan
- Housing assistance. The Department of Housing and Urban Development sets eligibility for public housing and Section 8 vouchers by comparing household income to area median income, the median for a specific metropolitan area or county. Tying the threshold to local medians keeps eligibility connected to local cost of living.4HUD USER. Income Limits
- Energy bills. The Low Income Home Energy Assistance Program caps eligibility at the greater of 150% of the federal poverty guidelines or 60% of the state’s median income.5Office of the Law Revision Counsel. 42 USC 8624 – Applications and Requirements
In each of these programs, using the average instead of the median would let a small number of very high earners in the reference group inflate the threshold, and the rule would stop tracking the population it is meant to serve.
Real vs. Nominal Figures
When comparing median or average income across years, watch for one more distinction. A nominal figure is the raw dollar number with no adjustment for inflation. A real figure adjusts for changes in the cost of living so the comparison is fair.6United States Census Bureau. How Inflation Affects the Census Bureau’s Income and Earnings Estimates
The Census Bureau reported a nominal median household income of $80,610 in 2023. Restated in 2024 dollars, the real figure was $82,690, with the difference reflecting a 2.6% inflation rate between those years.6United States Census Bureau. How Inflation Affects the Census Bureau’s Income and Earnings Estimates A nominal raise that only keeps pace with inflation means purchasing power stood still.
Household Income vs. Family Income
Federal data reports two versions of median income, and picking up the wrong one will hand you the wrong number. The Census Bureau defines a household as everyone living in the same housing unit, related or not, which includes roommates, unmarried partners, and adult children. A family is two or more people in the same home related by birth, marriage, or adoption.7United States Census Bureau. Subject Definitions
Families tend to have more earners per unit than the broader household category, which sweeps in single-person homes and unrelated roommates, so median family income runs higher. U.S. median household income was $83,730 in 2024,1United States Census Bureau. Income, Poverty and Health Insurance Coverage in the U.S.: 2024 while the estimated national median income for a four-person family is $119,584 for the period through September 2026.8Administration for Children and Families. Attachment 4 State Median Income by Household Size for Optional Use in FY25 and Mandatory Use in LIHEAP for FY26 Bankruptcy courts use median family income; many housing programs use area median income calculated across all households. Reading the same word two ways is one of the easier ways to draw the wrong conclusion about where you stand.