Collinsville, OK

ZIP code 74021 covers the city of Collinsville in Oklahoma. This area is home to the Collinsville Historic District, featuring well-preserved buildings dating back to the early 1900s. Another notable landmark is the Collinsville City Park, offering recreational facilities and green spaces for residents to enjoy. With a mix of historic charm and modern amenities, ZIP code 74021 is a vibrant community in northeastern Oklahoma.