Find 205 one-bedroom apartments for rent in Castle Rock, CO on ForRent.com. Compared to a studio, a one-bedroom apartment offers a separate and defined bedroom, bathroom, and living area with a full kitchen. These apartments give you privacy and a quiet retreat from the main living area, as well as a common space to host guests. One-bedroom rentals are great for individuals, couples, or other renters in need of minimal space with essential amenities. Finding cost-effective living options in Castle Rock, CO is made easier with 205 apartments for rent under $3,000. These budget-friendly rental options offer a variety of floor plans and amenities while adhering to your financial preferences. Opting for an apartment under $3,000 in Castle Rock means enjoying a balanced lifestyle where price does not compromise the quality of living.