Much of America's farmland is under attack by sprawling development. Agriculture is deeply rooted in this country's history, from the first days of colonization to present times. The early farmers of Southeastern Pennsylvania were hardworking and fortunate to have some of the most fertile soil. Their contributions helped sustain a growing population in Philadelphia and beyond, enabling a young nation to thrive. Southeastern Pennsylvania's rich agricultural history and heritage has recently begun to disappear from the landscape. Sprawl is not a new phenomenon. Its roots can be traced back to the industrialization that was taking place throughout America during the late nineteenth century. As cities' populations rose, they became increasingly overcrowded, polluted, and unhealthy places to live. Those who could afford to began moving out of the city and commuting to their jobs, creating the country's first commuters and suburbs. This trend has continued today, unfortunately with farmland becoming prime real estate for sprawling residential development.

The residents of the Lehigh Valley have voiced their support of farmland preservation, as well as their disdain for sprawling development. It is these sentiments that have prompted this study. Agricultural zoning ordinances are currently in use by only four townships in the Lehigh Valley. This thesis examines three of these townships to determine if the presence of an agricultural zoning ordinance can help control sprawling development. Each ordinance is examined to ascertain its strengths and weaknesses. In addition, analysis of census data, cost of conservation easement data, and sub-division activity is conducted for three townships with agricultural zoning ordinances, and three similar townships without. Agricultural zoning ordinances can help to control sprawling development, and are most effective when utilized as one part of a larger farmland preservation program. Recommendations regarding future research, the language and tracking of agricultural zoning ordinances, and increased implementation by municipalities is offered.