| Business Name | Address | |
| Ellicott City Lock & Key | Po Box 127 Glen Burnie, MD 21060 |
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| Universal Locksmith Svc Inc | Po Box 127 Glen Burnie, MD 21060 |
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| Bill'S Lock & Key Svc | Po Box 1429 Glen Burnie, MD 21060 |
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| Universal Locksmith | 215 Ritchie Ln Glen Burnie, MD 21061 |
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| Crime Prevention Lock & Scrty | Glen Burnie, MD 21061 | |