Americans' Average Income by Age -- How Do You Compare?

Nationwide, the average American under age 65 is earning $31,738 per year, according to the Census Bureau's Current Population Survey. However, average income varies significantly by age, and a more useful comparison for determining your financial preparedness may be your contribution rate to savings accounts. Are you on track for financial security?

Read on to learn Americans' average income by age, and how much average Americans are saving for their golden years.

IMAGE SOURCE: GETTY IMAGES.

Risky road ahead

Because averages can be deceiving, it's useful to consider average (mean) income and median income. As a quick refresher, the median is the exact midpoint of a range of data, so there's an equal likelihood of falling above it or below it.

As the following chart illustrates, our mean and median incomes start off low, build steadily into our 40s, and then begin declining up to and throughout our retirement:

IMAGE SOURCE: CENSUS BUREAU, CURRENT POPULATION SURVEY 2016.

If your income is above these figures, don't pat yourself on the back too quickly, because while the amount you earn has a big influence on retirement preparedness, an equally important figure is the percentage of income that you're saving. After all, a high income that's hardly saved at all won't guarantee financial security in the future.

An individual earning $40,000 per year over a forty-year career who saves 5% of his or her income annually, or $2,000, and earns a hypothetical 6% interest rate, would end up with a nest egg valued at $310,142.98. Meanwhile, someone earning $30,000 who saves 9% of his or her income annually, or $2,700, would end up with a significantly higher $417,857.31 set aside for retirement.

Therefore, it's most useful to focus on -- rather than how your income stacks up -- the percentage of your income you're saving compared to your peers.

According to Transamerica, the average American worker is contributing 8% of income to employer-sponsored retirement plans annually. Baby boomers are socking away 10% per year, while Generation X and millennials are saving 7% of their income per year.

Unfortunately, even at those contribution rates, average retirement savings levels suggest that many Americans will face a big gap between retirement income and retirement spending. Roughly 50% of baby boomers have saved less than $100,000 for retirement, and more than a third of baby boomers have saved less than $50,000, according to PwC's Employee Financial Wellness Survey.

Typically, it's recommended that individuals withdraw no more than 4% of their savings annually in retirement, so those nest eggs aren't likely to kick off much in the way of retirement income. As a result, millions of Americans will rely heavily on Social Security.

Currently, one quarter of married retired couples and 43% of singles count on Social Security for 90% or more of their annual income.

Since the average Social Security check is expected to be only $1,360 per month in 2017, that's a worrisome statistic. Even more concerning, however, is the fact that more money is being paid out in Social Security benefits than is being collected in payroll taxes. Because that's forcing the Social Security Administration to draw down its trust fund, recipients could face steep cuts to their benefits as early as 2034, says Social Security's board of trustees.

Getting back on track

Boosting income can obviously have a substantial benefit on your retirement savings. However, you can still make up ground by maxing out your contribution rate to your retirement plan, if a raise or job change isn't in the cards.

If your contribution rate is below average, then create a plan now to increase it. Even if your budget is too tight to increase your rate to double digits immediately, increasing it by 1% annually could get you on pace for success, without forcing you to make major changes to your lifestyle.

The $15,834 Social Security bonus most retirees completely overlook If you're like most Americans, you're a few years (or more) behind on your retirement savings. But a handful of little-known "Social Security secrets" could help ensure a boost in your retirement income. For example: one easy trick could pay you as much as $15,834 more... each year! Once you learn how to maximize your Social Security benefits, we think you could retire confidently with the peace of mind we're all after.Simply click here to discover how to learn more about these strategies.

Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.