• Calculate natural percentage population change
• Identify the types of expected growth from age structure diagrams
• Use the Demographic Transition Model to evaluate a countries level of development
• Describe solutions for population stability

The human population is now in an exponential part of a J-shaped growth curve.
World population increases the equivalent of one medium-sized city (216,000) per day and 79 million per year.
Calculate the doubling time for the world at the current growth rate.
The world population may level off at 8, 10.5 or 14.2 billion. Why?

Demography: the statistical study of a population
• As of the census[2] of 2000, there were 58,974 people, 18,947 households, and 14,020 families residing in the city. The population density was 3,106.4/km² (8,045.8/mi²). There were 19,441 housing units at an average density of 1,024.0/km² (2,652.3/mi²). The racial makeup of the city was 63.00% White , 1.57% Black or African
American , 0.96% Native American , 5.93% Asian , 0.22% Pacific
Islander , 23.66% from other races , and 4.67% from two or more races.
49.04% of the population were Hispanic or Latino of any race.
• There are 19,042 households out of which 39.3% had children under the age of 18 living with them, 54.5% were married couples living together, 13.5% had a female householder with no husband present, and 26.0% were non-families. 21.0% of all households were made up of individuals and 8.0% had someone living alone who was 65 years of age or older. The average household size was 3.08 and the average family size was 3.56.
• In the city the population was spread out with 29.1% under the age of
18, 10.3% from 18 to 24, 31.7% from 25 to 44, 18.2% from 45 to 64, and 10.8% who were 65 years of age or older. The median age was 31 years. For every 100 females there were 97.1 males. For every 100 females age 18 and over, there were 94.7 males.

:the statistical study of a population
Density
Distribution
Growth rate
For a population i.e. La Habra
Percent change = ( ) – ( )
For the World population change
Crude birth rate = birth rate/1000 people
Crude death rate = deaths/1000 people
Percent change = birth rate – death rate
1000 persons x 100

:the statistical study of a population
Density
Distribution
Growth rate
For a population i.e. La Habra
Percent change = (births + immigration) – (deaths + emigration)
For the World population change
Crude birth rate = birth rate/1000 people
Crude death rate = deaths/1000 people
Percent change = birth rate – death rate
1000 persons x 100

Fertility Rate:
Replacement Level Fertility
Total fertility rate
Mortality rate

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• Social Security
• Women’s opportunities in the workforce
• Contraceptive Access
• Health Care
• Education
• Older Marital Age
• Old age security
• Lack of education
• Women’s status in society
• Lack of contraception
• Child mortality

Postreproductive
Reproductive
Prereproductive

• Rapid: 1.5 – 3%
• Slow: 0.3 – 1.4%
• Zero: 0 – 0.2%
• Negative

How does age structure affect population growth?

99% of the next billion people added will be born in poor, less developed regions that are least able to support them
44% of Nigeria’s population is under age 15!

• Where will people live?

• Where will people live?
• How will we feed, house and educate?

• Where will people live?
• How will we feed, house and educate?
• Will we have necessary resources?

• Where will people live?
• How will we feed, house and educate?
• Will we have necessary resources?
• What will the impact on the environment be?

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• Loss of work force

• Loss of work force
• Loss of persons in reproductive range

• Loss of work force
• Loss of persons in reproductive range
• Loss of resources for aging population

• Demographic Transition Model

The Cairo Conference 1997
• Empower women
• Education
• Health care
• Increase economic opportunities

• Demography is the statistical study of

•
• Demography is the statistical study of populations provide information for projecting population dynamics

• Demography is the statistical study of populations
• Age structure diagrams provide information for projecting population dynamics
• The worlds TFR is declining as population is

• Demography is the statistical study of populations
• Age structure diagrams provide information for projecting population dynamics
• The worlds TFR is declining as population is increasing
• The majority of growth will occur in

• Demography is the statistical study of populations
• Age structure diagrams provide information for projecting population dynamics
• The worlds TFR is declining as population is increasing
• The majority of growth will occur in LDC’s
• A naturally occurring equilibrium is supported by the

• Demography is the statistical study of populations
• Age structure diagrams provide information for projecting population dynamics
• The worlds TFR is declining as population is increasing
• The majority of growth will occur in LDC’s
• A naturally occurring equilibrium is supported by the Demographic Transition Model
• Education, economic stimulus, and empowerment of women are methods of influencing

• Demography is the statistical study of populations
• Age structure diagrams provide information for projecting population dynamics
• The worlds TFR is declining as population is increasing
• The majority of growth will occur in LDC’s
• A naturally occurring equilibrium is supported by the Demographic Transition Model
• Education, economic stimulus, and empowerment of women are methods of influencing population size

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