U.S. Fertility Rate Hits 35-Year High, Stabilizing Population

Rob Stein, Washington Post, December 21, 2007

For the first time in 35 years, the U.S. fertility rate has climbed high enough to sustain a stable population, solidifying the nation’s unique status among industrialized countries.

The overall fertility rate increased 2 percent between 2005 and 2006, nudging the average number of babies being born to each woman to 2.1, according to the latest federal statistics. That marks the first time since 1971 that the rate has reached a crucial benchmark of population growth: the ability of each generation to replace itself.

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Europe, Japan and other industrialized countries have long had fertility rates far below the replacement level, creating the prospect of labor shortages and loss of cultural identity as the proportion of native-born residents shrinks in relation to immigrant populations. In contrast, many developing nations’ birthrates far exceed the replacement rate, fueling poverty and social unrest.

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The reasons for the unusual U.S. fertility rate are the focus of intense interest. Experts can only speculate, but they cite a complex mix of factors, including lower levels of birth control use than in other developed countries, widely held religious values that encourage childbearing, social conditions that make it easier for women to work and have families, and a growing Hispanic population.

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The nation’s total fertility rate hit a high of nearly 3.8 in the United States in 1957 during the postwar Baby Boom. But it fell sharply through the 1960s and 1970s with the introduction of the birth control pill and other trends, including women delaying childbearing to attend college and pursue a career. The rate dipped below replacement level in 1972 and hit a low of 1.7 in 1976, but it started rising again in the late 1970s. It climbed steadily through the 1980s, hovering close to but never hitting the replacement rate throughout the ’90s. The population rose steadily nevertheless, however, because, in part, of immigration.

The fertility rate finally surpassed the replacement threshold again in 2006, according to a preliminary analysis of birth data released by the government this month. When the report was published, attention focused on a jump in the teen birthrate for the first time in 14 years, but the statistics show that was part of an increase in birthrates across almost all ages.

“The teenagers may have had some impact, but the birthrate went up for every group, including women in their 20s, and they account for a huge percentage of the childbearing in this country,” Ventura said.

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Some of the increase is explained by immigration. Hispanics have the highest fertility rate—about 2.9—followed by blacks (2.1), Asians (1.9) and whites (1.86). But Hispanics do not represent enough of the population to fully explain the trend, and the fertility rate of U.S. whites is still higher than that of other developed countries.

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For developed countries, a replacement-level fertility rate is considered vital for keeping retirement programs such as Social Security solvent by supplying new workers to pay into the system to support retirees.

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Although many European countries offer women incentives to have children, such as providing lengthy paid maternity leave, guaranteeing their jobs and subsidizing child care, the efforts have had limited impact.

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While being a mother who works outside the home is far from easy for many American women, many experts said the United States is in many ways more amenable to the practice than many other developed countries. The high-octane consumer economy, for example, helps women run households more efficiently in a number of ways, including making prepared foods more widely available, and weekend and late-night shopping possible. American men are also helping more with their children than in the past, experts say.

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The nation’s religiosity also contributes to the higher fertility rate, which varies geographically, experts said. Red states tend to have both more religious people and higher fertility rates.

“Americans are much more religious than Europeans: They believe in God more. They go to church more,” said Charles Westoff, a Princeton University demographer. “That sort of religious attitude or set of values is strongly correlated with fertility.”

Whatever the cause, the fertility rate combined with increased immigration is likely to continue to fuel growth of the U.S. population, experts said.

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