Buchanan County, Missouri Cities (2024)

Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)

City
Rank
2024 Pop.
2020 Pop.
Change
Density (/mi²)
Area (mi²)
Type
St. Joseph170,13072,144-0.71%1,59344.0City
Agency2642668-1.08%1743.7Village
De Kalb32382330.42%9330.3Town
Faucett42252097.66%2281.0CDP
Easton5223226-0.45%3790.6City
Rushville6215223-0.92%1,0860.2Village
Ridgely7106981.92%771.4Village
Lewis Clark Village89295-1.07%1500.6Town
New Market977416.94%4030.2CDP

Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.

What is the largest city in Buchanan County, Missouri?

St. Joseph is the largest city in Buchanan County.

What is the smallest city in Buchanan County, Missouri?

New Market is the smallest city in Buchanan County.

How many cities are in Buchanan County?

There are 9 cities in Buchanan County, Missouri.

Frequently Asked Questions