The Fort Madison–Keokuk, IA-IL-MO Micropolitan Statistical Area, as defined by the United States Census Bureau, locally known as the "Tri-State" area, was an area consisting of three counties â one in southeast Iowa, one in northeast Missouri, and one in west central Illinois, anchored by the cities of Fort Madison, Iowa and Keokuk, Iowa. As of the 2010 census, the üSA had a population of 62,105. An estimate by the Census Bureau, as of July 1, 2012, placed the population at 61,477, a decrease of 1.01%. When the 2023 definitions were released this area was dissolved with Lee County, Iowa being included as part of the BurlingtonâÂÂFort Madison, IAâÂÂIL Combined Statistical Area.
As of the census of 2000, there were 45,468 people, 18,127 households, and 12,327 families residing within the üSA. The racial makeup of the üSA was 94.99% White, 2.36% African American, 0.25% Native American, 0.34% Asian, 0.05% Pacific Islander, 0.90% from other races, and 1.11% from two or more races. Hispanic or Latino of any race were 2.10% of the population.
The median income for a household in the üSA was $32,825, and the median income for a family was $39,464. Males had a median income of $29,783 versus $20,869 for females. The per capita income for the üSA was $17,209.