Apartments for Rent in Union, Franklin County, MO

Prices and availability in Union, Franklin County, MO were last updated on 22 May 2026.

The best apartment in Union, Franklin County, MO is: Pops Properties, LLC Union.

In Union, 39% of the residents are renting compared to 61% owning a home, according to data from the U.S. Census Bureau. Large-scale apartment buildings with more than 50 units represent 0.6% of Union's rentals, 60% are small-scale complexes with under 50 units, and 24% are single-family rentals.

The average age of rental buildings in Union is 19 years old, with all being newer apartment buildings completed since 2000. The average height of apartment buildings in the city is 3 stories, of which all are garden-style apartment communities, none are mid-sized buildings, and none are high-rises. These characteristics describe large-scale apartment communities of 50 apartments or more.

Rental apartments in Union come in a range of sizes and floorplans. Studio apartments represent 0% of units for rent, ideal for singles, renters on a budget and people who value central locations more than space. Rentals with 1-bedroom floorplans make up 26% of the total apartments in the city, while 2-bedroom floorplans represent around 55% of all rentals in Union. The rest are larger floorplans with 3 bedrooms or more, typically preferred by families, larger households or roommates sharing space.