Apartments for Rent in Union, Warren County, OH

Prices and availability in Union, Warren County, OH were last updated on 27 May 2026.

The best apartment in Union, Warren County, OH is: Redwood South Lebanon.

The average rent in Union, Warren County, OH is $1,416.

The price range for a 2-bedroom apartment in Union, Warren County, OH is between $2,515 and $3,394.

In Union, 19% of the residents are renting compared to 81% owning a home, according to data from the U.S. Census Bureau. Large-scale apartment buildings with more than 50 units represent none of Union's rentals, 70% are small-scale complexes with under 50 units, and 22% are single-family rentals.

The average age of rental buildings in Union is 30 years old, with 54% being newer apartment buildings completed since 2000. The average height of apartment buildings in the city is 2 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 0.2% 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 37% of the total apartments in the city, while 2-bedroom floorplans represent around 53% 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.