In most cases, Radio Shack stores close between 7 p.m. and 10 p.m., but different Radio Shack stores close at different times. The store locator page gives closing times for each individual store.
There is no uniform closing time for Radio Shack stores. Different branches close at different times, usually between 7 p.m. and 10 p.m. The closing time can vary based on the day of the week. The best way to know when a local Radio Shack store closes is to use Radio Shack's store locator feature to look up the local store; this page gives the opening and closing hours for each day.