Vernon is a city in Washington County, Florida, United States. The population was 743 at the 2000 census; according to the U.S. Census Bureau's 2004 estimates, the city had a population of 757.The geographical center of Washington County, Florida, Vernon is named for George Washington's Virginia home, Mt. Vernon. The quaint, pioneer town was also the site of a major Indian settlement. Vernon held the county seat until 1927 when the seat was moved to Chipley. The move was approved by a margin of one vote.Vernon became known as "nub city" in the 1950s and 1960s for a high number of limb loss insurance claims made in the area. Vernon was featured in the Errol Morris documentary film Vernon, Florida highlighting the eccentricities of the people who lived there. The movie angered many residents of the city and surrounding areas who felt the documentary portrayed Vernon in a negative light.