Map of Buchanan County, Missouri

Buchanan County is located in the U.S. state of Missouri. As of the 2020 United States Census, the population was 84,793. Its county seat is St. Joseph. When originally formed in 1838, the county was named Roberts County, after settler Hiram Roberts. It was renamed in 1839 for James Buchanan, then a U.S. Senator and later President of the United States. The county was formed from land annexed to Missouri, as were five other counties.

Buchanan County is included in the Kansas City CSA.

Buchanan County overview:
Name:	Buchanan County
FIPS code:	29-021
State:	Missouri
Founded:	December 31, 1838
Named for:	James Buchanan
Seat:	St. Joseph
Largest city:	St. Joseph
Total Area:	415 sq mi (1,070 km²)
Land Area:	408 sq mi (1,060 km²)
Total Population:	84,793
Population Density:	200/sq mi (79/km²)
Time zone:	UTC−6 (Central)
Summer Time Zone (DST):	UTC−5 (CDT)
Website:	www.co.buchanan.mo.us

Buchanan County location map. Where is Buchanan County?

Buchanan County location on the U.S. Map. Where is Buchanan County. — Location of Buchanan County in the the United States.

Buchanan County location on the Missouri map. Where is Buchanan County. — Location of Buchanan County in Missouri.

Buchanan County Road Map

Buchanan CountyStreet Map. — Street map of Buchanan County, Missouri. Source: OpenStreetMap (OSM)

Buchanan CountyMap — Buchanan Countypolitical map.

Geography

According to the U.S. Census Bureau, the county has a total area of 415 square miles (1,070 km), of which 408 square miles (1,060 km) is land and 6.6 square miles (17 km) (1.6%) is water.