The USA birth rate has been in a steady decline for over a century, and probably even longer. As reported by infoplease.com, there were 30.1 live births per 1,000 peoples in 1910, as compared to just 13.8 per 1,000 peoples in 2009. To put this in even more meaningful perspective, in 1910, the population of America was approximately 92 million peoples, yet there were 2,777,000 newborns created, whereas in 2009 with a population of nearly 307 million, there were only 4,131,000 newborns created. Clearly, the birth rate in America has plummeted and based on this steep and precipitous decline it would not appear that this will be changed anytime soon, without governmental incentives.
There are a multitude of reasons why our birthrate as well as other industrialized countries birth rates have declined, to which the most meaningful are the fact that typically the more educated the woman is, the less children that she will bear, in addition to that fact, the age of women when first getting married has risen considerably over time so that the older that a woman is upon marriage the less children that she will bear. Then too there is the fact that with both abortion legal in all 50 States, as well as the fact that the variety of birth control pills or other birth control devices have never been more available and reliable, signifies that "non-planned" births and "shotgun" weddings are both in decline.
Then too there is the reality that the population mix in America has changed over the years, to which the urban population percentage currently is approximately 81%, whereas back in 1910 the urban population percentage was only about 46%. So too, as reported by consumer.healthcare.com, in 2013,"The teen birth rate was almost one-third higher in rural counties compared to the rest of the country." The thing about rural communities back in 1910, and while certainly less true today, is that children were often seen to be a net benefit, because of the fact that the parents of these children could utilize them as free labor in the harvesting and production of food or other rural products, whereas in urban areas, children are more of a cost burden, and in recognition of this, parents have less children.
In addition, to all of this above, there is the fact that people today have many more things available to do and to keep themselves occupied as compared to families back in 1910, to which, you only have to look at your typical day and behavior to see how often and how much time you spend on social media, your cell phone, your computer, entertainment options of all sorts, and the fact that whereas previously lives were centered around accomplishing work from daylight to sunset, with modern lighting and all of its amenities, people can extend their days, indefinitely. Back in 1910, most of the items that we take for granted today, either did not exist, or existed on a limited scale, for urban people, or for people with lots of money. This meant that rural people, especially and for the most part, once their hard labor had been accomplished for that day, had few options to entertain themselves upon nightfall other than conversation and copulation so that without birth control and considering the fact that they married younger, resulted in a significantly higher birth rate.