Population Geography

Population National Geographic - 7 billion National Geographic - Are You Typical?

Key Terms Demography – The statistical study of human populations. Population – The total number of people living in a given area. Population Density – The average number of people living in a given area. (persons per square mile) – Arithmetic: Population/Total Land. Ex: (30 people/10 square miles of land)= 3 ppl/sq mi – Physiologic: Population/Arable Land. Ex: (30 people/5 square miles of land that is farmable)= 6 ppl/sq mi

Birthrate – Number of live births each year per 1,000 women. Death Rate – Number of deaths each year per 1,000 people. Immigrants – People who move into a country Emigrants – People who leave a country to live elsewhere

Pull Factors – Things that attract people to live in a new location. Push Factors – Things cause people to leave a location. Urbanization – the movement of people from the countryside to cities (growth of cities) Rural – Of, or relating to the countryside.

Population Patterns in the United States

Top 10 Most Populous Cities in the US 10. San Jose, CA 9. Dallas, TX 8. San Diego, CAAll of these cities 7. San Antonio, TXrange from Phoenix, AZmillion. 5. Philadelphia 4. Houston, TX – 2.1 mil 3. Chicago, IL – 2.7 mil 2. Los Angeles, CA – 3.9 mil 1. New York City, NY – 8.5 mil

Most Populous States 10. North Carolina 9. Michigan 8. Georgia 7. Ohio 6. Pennsylvania 5. Illinois 4. Florida 3. New York 2. Texas 1. California – app. 38 million

Least Populous States #1 – Wyoming – 576,000 #2 – Vermont #3 – North Dakota #4 - Alaska

World Population Patterns

Population Pyramids Shows the age & sex distribution of a population Shows the history of a country’s population growth—Ex. Baby Boom Generation in U.S.

3 Types of Growth 1.Rapid growth-wide at the base (Ex: Haiti) …looks like a true pyramid 2.Slow growth- straight up and down or a little wider at base than top (Ex: US) 3.Negative growth-broader at top than bottom (Ex: Germany)

Brainstorming Reasons why some countries have high birth rates? (Have lots of children?) Reasons for high death rates? Reasons why some countries have low death rates? (Have few or no children?) Reasons for low death rates?