Middletown Township was sparsely populated before 1950: there were only a little more than 2,000 people in 1930, compared to about 46,000 in 2010. Then William Levitt began his second Levittown, which included land of four municipalities, including that of Middletown. Twelve developments were constructed in the township, with the majority of them containing hundreds of homes. This marked the first planned residential development in the township. Meanwhile, Langhorne Terrace was being constructed out of the Neshaminy Woods. During this decade, the township grow by over 440%, or more than 20,000 new residents. As the decades worn on, hundreds and hundreds of acres of pristine woods, rolling countryside, and productive farms continued to be swallowed into homes and businesses. In the 1970s, the Oxford Valley Mall was constructed, and at the time was named the country's largest mall for a short time.