1. 1950 U.S. population 154 million 5.6 million farms
One farmer produced enough to feed 30 people
In 1950 there were 154-million people and 5.6-million farms in the United States. A single farmer produced enough in one year to feed 30 people.
In 2009, there were an estimated 305-million people and 2-million farms in the United States. A single farmer produced enough in one year to feed 140 people.
If the U.S. today relied on the farmers of 1950 to produce their food, 151 million people would go hungry.
151-million is the combined populations of the 9 largest states in the U.S. (California, Texas, New York, Florida, Illinois, Pennsylvania, Ohio, Michigan, and Georgia).
Taking into consideration there are only 2 million farms in the U.S. today (compared to 5.6 million in 1950), using 1950s technology would produce enough food for only 54 million people (the combined population of California and Texas).
Source: American Farm Bureau, Census Bureau
Source: U.S. Census Bureau, American Farm Bureau 1

2. 2014 U.S. population ~312 million ~2 million farms
One farmer produces enough to feed 155 people
In 1950 there were 154-million people and 5.6-million farms in the United States. A single farmer produced enough in one year to feed 30 people.
In 2009, there were an estimated 305-million people and 2-million farms in the United States. A single farmer produced enough in one year to feed 140 people.
If the U.S. today relied on the farmers of 1950 to produce their food, 151 million people would go hungry.
151-million is the combined populations of the 9 largest states in the U.S. (California, Texas, New York, Florida, Illinois, Pennsylvania, Ohio, Michigan, and Georgia).
Taking into consideration there are only 2 million farms in the U.S. today (compared to 5.6 million in 1950), using 1950s technology would produce enough food for only 54 million people (the combined population of California and Texas).
Source: American Farm Bureau, US Census Bureau
Source: U.S. Census Bureau, American Farm Bureau 2

3. Then and Now
If the number of farms and level of productivity remained constant since 1950, there would be no food for anyone in the following states:

4. 151 Million People Then and Now 9 Most Populous US States California
Texas
New York
Florida
Illinois
Pennsylvania
Ohio
Michigan
Georgia
151 Million People
9 Most Populous US States
Est. U.S. population in 1950 – 154,000,000
Est. U.S. population in ,000,000
Source: Census Bureau 4

5. Productivity Improvements
The amount of land used per capita to produce all the meat, milk, poultry and eggs in the U.S. declined by two thirds from 1960 to 2010