Population

Approximate size

Number of people affected by a risk of 10^(-4)

Number of people affected by a risk of 10^(-5)

Number of people affected by a risk of 10^(-6)

Number of people affected by a risk of 10^(-7)

UT Austin students

50,000

5

< 1

< 1

< 1

City of Austin

643,000

64

6

< 1

< 1

Travis county

812,000

81

8

< 1

< 1

Texas

21,000,000

2100

210

2

United States

285,000,000

28500

2850

29

World

6,171,000,000

617,100

61,710

617