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 v. Physiologic

• Birthrate – Number of live births each year per 1,000 people.

• 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 Patternsin the United States

Pop. Density in U.S. Counties

Loving, TXForest, WIBlue Earth, MNHonolulu, HISan Francisco, CAManhattan, NY

0.10 p/sq. mi.10751,44816,25667,255

Top 10 Most Populous Cities in the US

10. San Jose, CA9. Dallas, TX8. San Diego, CA All of these cities 7. San Antonio, TX range from 1-1.5 6. Phoenix, AZ million.5. Philadelphia

4. Houston, TX – 2.1 mil3. Chicago, IL – 2.7 mil2. Los Angeles, CA – 3.9 mil1. New York City, NY – 8.5 mil

Most Populous States

10. NC9. MI8. GA7. OH6. PA5. IL4. FL3. NY2. TX1. CA – 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.

• A country’s population pyramid can show 1 of 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?

                                                                                                                                                                                                                                   

                  

Changing China