Population Pyramids for Certain Cities

Today we looked at the population pyramids for different cities and we came up with the reasons why their pyramids are shaped that way. We also looked at a website that shows us the population for different countries from the past and the future. Like I said in my last blog, not every population pyramid is the three shapes (cup, box, Christmas tree). For Buffalo County, South Dakota, the pyramid looks like a Christmas tree, which is because it is a poor place that has a good birth rate but there isn't as many jobs so once the kids grow up they move. For Manhattan, New York, their highest group of people is ages 25-39. Manhattan is known for their jobs and moving their to pursue a good career like fashion, film, art, and business so people are not going to have kids because they are completely invested in their careers. Lastly, for Punta Gorda, Florida their highest group of people is older people because a lot of retired people like to move to hotter places so they can relax and not have to worry about cold weather and shoveling. On the website for population pyramids it only goes back to the year 1950 and up to the year 2100. The world's population slowly rises and reaches 11 billion people, but the pyramid starts to look like a box which means the birth rate is going down and we still have a long life expectancy. The United States population does the same thing as the world and turns into a box and the population is 450 million in the year 2100. We also looked at Japan and their population decreases over time starting at over 100 million and ending under 100 million because there birth rate is really low but they have a lot of old people.